Initial commit

2025-06-24 16:03:39 +02:00
commit f3256cdaf2
6949 changed files with 1441681 additions and 0 deletions
--- a/toolchain/Config.in
+++ b/toolchain/Config.in
@@ -0,0 +1,321 @@
+# Copyright (C) 2006-2013 OpenWrt.org
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+
+menuconfig TARGET_OPTIONS
+	bool "Target Options"  if DEVEL
+
+	config TARGET_OPTIMIZATION
+		string "Target Optimizations" if TARGET_OPTIONS
+		default DEFAULT_TARGET_OPTIMIZATION
+		help
+		  Optimizations to use when building for the target host.
+
+	config SOFT_FLOAT
+		bool "Use software floating point by default" if TARGET_OPTIONS
+		default y if !HAS_FPU
+		depends on arm || armeb || powerpc || mipsel || mips || mips64el || mips64
+		help
+		  If your target CPU does not have a Floating Point Unit (FPU) or a
+		  kernel FPU emulator, but you still wish to support floating point
+		  functions, then everything will need to be compiled with soft floating
+		  point support (-msoft-float).
+
+		  Most people will answer N.
+
+	config USE_MIPS16
+		bool "Build packages with MIPS16 instructions" if TARGET_OPTIONS
+		depends on HAS_MIPS16
+		default y
+		help
+		  If your target CPU does support the MIPS16 instruction set
+		  and you want to use it for packages, enable this option.
+		  MIPS16 produces smaller binaries thus reducing pressure on
+		  caches and TLB.
+
+		  Most people will answer N.
+
+
+menuconfig EXTERNAL_TOOLCHAIN
+	bool
+	prompt "Use external toolchain"  if DEVEL
+	help
+	  If enabled, the buildroot will compile using an existing toolchain instead of
+	  compiling one.
+
+	config NATIVE_TOOLCHAIN
+		bool
+		prompt "Use host's toolchain"  if DEVEL
+		depends on EXTERNAL_TOOLCHAIN
+		select NO_STRIP
+		help
+		  If enabled, the buildroot will compile using the native toolchain for your
+		  host instead of compiling one.
+
+	config TARGET_NAME
+		string
+		prompt "Target name"  if DEVEL
+		depends on EXTERNAL_TOOLCHAIN && !NATIVE_TOOLCHAIN
+		default "aarch64-unknown-linux-gnu"  if aarch64
+		default "aarch64_be-unknown-linux-gnu"  if aarch64_be
+		default "arm-unknown-linux-gnu"      if arm
+		default "armeb-unknown-linux-gnu"    if armeb
+		default "i486-unknown-linux-gnu"     if i386
+		default "mips-unknown-linux-gnu"     if mips
+		default "mipsel-unknown-linux-gnu"   if mipsel
+		default "powerpc-unknown-linux-gnu"  if powerpc
+		default "x86_64-unknown-linux-gnu"   if x86_64
+
+	config TOOLCHAIN_PREFIX
+		string
+		prompt "Toolchain prefix"  if DEVEL
+		depends on EXTERNAL_TOOLCHAIN && !NATIVE_TOOLCHAIN
+		default "aarch64-unknown-linux-gnu"  if aarch64
+		default "aarch64_be-unknown-linux-gnu"  if aarch64_be
+		default "arm-unknown-linux-gnu-"      if arm
+		default "armeb-unknown-linux-gnu-"    if armeb
+		default "i486-unknown-linux-gnu-"     if i386
+		default "mips-unknown-linux-gnu-"     if mips
+		default "mipsel-unknown-linux-gnu-"   if mipsel
+		default "powerpc-unknown-linux-gnu-"  if powerpc
+		default "x86_64-unknown-linux-gnu-"   if x86_64
+
+	config TOOLCHAIN_ROOT
+		string
+		prompt "Toolchain root"  if DEVEL
+		depends on EXTERNAL_TOOLCHAIN && !NATIVE_TOOLCHAIN
+		default "/opt/cross/aarch64-unknown-linux-gnu"  if aarch64
+		default "/opt/cross/aarch64_be-unknown-linux-gnu"  if aarch64_be
+		default "/opt/cross/arm-unknown-linux-gnu"      if arm
+		default "/opt/cross/armeb-unknown-linux-gnu"    if armeb
+		default "/opt/cross/i486-unknown-linux-gnu"     if i386
+		default "/opt/cross/mips-unknown-linux-gnu"     if mips
+		default "/opt/cross/mipsel-unknown-linux-gnu"   if mipsel
+		default "/opt/cross/powerpc-unknown-linux-gnu"  if powerpc
+		default "/opt/cross/x86_64-unknown-linux-gnu"   if x86_64
+
+	choice TOOLCHAIN_LIBC_TYPE
+		prompt "Toolchain libc"  if DEVEL
+		depends on EXTERNAL_TOOLCHAIN && !NATIVE_TOOLCHAIN
+		default EXTERNAL_TOOLCHAIN_LIBC_USE_MUSL
+		help
+		  Specify the libc type used by the external toolchain. The given value
+		  is passed as -m flag to all gcc and g++ invocations. This is mainly
+		  intended for multilib toolchains which support glibc and uclibc at
+		  the same time. If no value is specified, no -m flag is passed.
+
+		config EXTERNAL_TOOLCHAIN_LIBC_USE_GLIBC
+			bool "glibc"
+			select USE_GLIBC
+
+		config EXTERNAL_TOOLCHAIN_LIBC_USE_UCLIBC
+			bool "uClibc"
+			select USE_UCLIBC
+			depends on !(aarch64 || aarch64_be)
+
+		config EXTERNAL_TOOLCHAIN_LIBC_USE_MUSL
+			bool "musl"
+			select USE_MUSL
+
+	endchoice
+
+	config TOOLCHAIN_LIBC
+		string
+		depends on EXTERNAL_TOOLCHAIN && !NATIVE_TOOLCHAIN
+		default "glibc" if EXTERNAL_TOOLCHAIN_LIBC_USE_GLIBC
+		default "uclibc" if EXTERNAL_TOOLCHAIN_LIBC_USE_UCLIBC
+		default "musl" if EXTERNAL_TOOLCHAIN_LIBC_USE_MUSL
+
+	config TOOLCHAIN_BIN_PATH
+		string
+		prompt "Toolchain program path"  if DEVEL
+		depends on EXTERNAL_TOOLCHAIN && !NATIVE_TOOLCHAIN
+		default "./usr/bin ./bin"
+		help
+		  Specify additional directories searched for toolchain binaries
+		  (override PATH). Use ./DIR for directories relative to the root above.
+
+	config TOOLCHAIN_INC_PATH
+		string
+		prompt "Toolchain include path"  if DEVEL
+		depends on EXTERNAL_TOOLCHAIN && !NATIVE_TOOLCHAIN
+		default "./usr/include ./include"
+		help
+		  Specify additional directories searched for header files (override
+		  CPPFLAGS). Use ./DIR for directories relative to the root above.
+
+	config TOOLCHAIN_LIB_PATH
+		string
+		prompt "Toolchain library path"  if DEVEL
+		depends on EXTERNAL_TOOLCHAIN && !NATIVE_TOOLCHAIN
+		default "./usr/lib ./lib"
+		help
+		  Specify additional directories searched for libraries (override LDFLAGS).
+		  Use ./DIR for directories relative to the root above.
+
+config NEED_TOOLCHAIN
+	bool
+	depends on DEVEL
+	default y if !EXTERNAL_TOOLCHAIN
+
+menuconfig TOOLCHAINOPTS
+	bool "Toolchain Options"  if DEVEL
+	depends on NEED_TOOLCHAIN
+
+menuconfig EXTRA_TARGET_ARCH
+	bool
+	prompt "Enable an extra toolchain target architecture" if TOOLCHAINOPTS
+	depends on !sparc
+	default n
+	help
+	  Some builds may require a 'biarch' toolchain. This option
+	  allows you to specify an additional target arch.
+
+	  Most people will answer N here.
+
+	config EXTRA_TARGET_ARCH_NAME
+		string
+		prompt "Extra architecture name" if EXTRA_TARGET_ARCH
+		help
+		  Specify the cpu name (eg powerpc64 or x86_64) of the
+		  additional target architecture.
+
+	config EXTRA_TARGET_ARCH_OPTS
+		string
+		prompt "Extra architecture compiler options" if EXTRA_TARGET_ARCH
+		help
+		  If you're specifying an addition target architecture,
+		  you'll probably need to also provide options to make
+		  the compiler use this alternate arch.
+
+		  For example, if you're building a compiler that can build
+		  both powerpc and powerpc64 binaries, you'll need to
+		  specify -m64 here.
+
+
+	choice
+		prompt "MIPS64 user-land ABI" if TOOLCHAINOPTS && (mips64 || mips64el)
+		default MIPS64_ABI_N64
+		help
+		   MIPS64 supports 3 different user-land ABIs: o32 (legacy),
+		   n32 and n64.
+
+		config MIPS64_ABI_N64
+			bool "n64"
+
+		config MIPS64_ABI_N32
+			depends on !LIBC_USE_MUSL
+			bool "n32"
+
+		config MIPS64_ABI_O32
+			bool "o32"
+
+	endchoice
+
+comment "Binary tools"
+	depends on TOOLCHAINOPTS
+
+source "toolchain/binutils/Config.in"
+
+comment "Compiler"
+	depends on TOOLCHAINOPTS
+
+source "toolchain/gcc/Config.in"
+
+config NASM
+	bool
+	depends on ( i386 || x86_64 )
+	prompt "Build nasm" if TOOLCHAINOPTS
+	default y
+	help
+	  Enable if you want to build nasm
+
+comment "C Library"
+	depends on TOOLCHAINOPTS
+
+choice
+	prompt "C Library implementation" if TOOLCHAINOPTS
+	default LIBC_USE_UCLIBC if arc
+	default LIBC_USE_GLIBC if powerpc64
+	default LIBC_USE_MUSL
+	help
+	  Select the C library implementation.
+
+	config LIBC_USE_GLIBC
+		bool "Use glibc"
+		select USE_GLIBC
+		depends on !arc
+
+	config LIBC_USE_UCLIBC
+		select USE_UCLIBC
+		bool "Use uClibc"
+		depends on !(aarch64 || aarch64_be || powerpc64)
+		depends on BROKEN || !(arm || armeb || i386 || x86_64 || mips || mipsel || mips64 || mips64el || powerpc)
+
+	config LIBC_USE_MUSL
+		select USE_MUSL
+		bool "Use musl"
+		depends on !(arc || powerpc64)
+
+endchoice
+
+source "toolchain/uClibc/Config.in"
+source "toolchain/musl/Config.in"
+
+comment "Debuggers"
+	depends on TOOLCHAINOPTS
+
+config GDB
+	bool
+	prompt "Build gdb" if TOOLCHAINOPTS
+	default y if !EXTERNAL_TOOLCHAIN
+	help
+	  Enable if you want to build the gdb.
+
+config USE_GLIBC
+	default y if !TOOLCHAINOPTS && !EXTERNAL_TOOLCHAIN && !NATIVE_TOOLCHAIN && (powerpc64)
+	bool
+
+config USE_UCLIBC
+	default y if !TOOLCHAINOPTS && !EXTERNAL_TOOLCHAIN && !NATIVE_TOOLCHAIN && (arc)
+	bool
+
+config USE_MUSL
+	default y if !TOOLCHAINOPTS && !EXTERNAL_TOOLCHAIN && !NATIVE_TOOLCHAIN && !(arc || powerpc64)
+	bool
+
+config SSP_SUPPORT
+	default y if USE_MUSL || GCC_LIBSSP
+	bool
+
+config USE_EXTERNAL_LIBC
+	bool
+	default y if EXTERNAL_TOOLCHAIN || NATIVE_TOOLCHAIN
+
+source "toolchain/binutils/Config.version"
+source "toolchain/gcc/Config.version"
+
+config LIBC
+	string
+	default "glibc"   if USE_GLIBC
+	default "uClibc"  if USE_UCLIBC
+	default "musl"	  if USE_MUSL
+
+config TARGET_SUFFIX
+	string
+	default "gnueabi"         if USE_GLIBC && (arm || armeb)
+	default "gnu"             if USE_GLIBC && !(arm || armeb)
+	default "uclibcgnueabi"   if USE_UCLIBC && (arm || armeb)
+	default "uclibc"          if USE_UCLIBC && !(arm || armeb)
+	default "muslgnueabi"     if USE_MUSL && (arm || armeb)
+	default "musl"            if USE_MUSL && !(arm || armeb)
+
+config MIPS64_ABI
+	depends on mips64 || mips64el
+	string
+	default "64" if MIPS64_ABI_N64
+	default "n32" if MIPS64_ABI_N32
+	default "32" if MIPS64_ABI_O32
+	default "64"
--- a/toolchain/Makefile
+++ b/toolchain/Makefile
@@ -0,0 +1,99 @@
+# 
+# Copyright (C) 2007-2009 OpenWrt.org
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+# Main makefile for the toolchain
+#
+# Steps:
+# 1) toolchain/binutils/compile
+#    build & install binutils
+# 2) toolchain/gcc/minimal/compile
+#    build & install a minimal gcc, needed for steps 3 & 4
+# 3) toolchain/kernel-headers/compile
+#    install kernel headers, needed for step 4
+# 4) toolchain/libc/headers/compile
+#    build & install libc headers & support files, needed for step 5
+# 5) toolchain/gcc/initial/compile
+#    build & install an initial gcc, needed for step 6
+# 6) toolchain/libc/compile
+#    build & install the final libc
+# 7) toolchain/gcc/final/compile
+#    build & install the final gcc
+# 8) toolchain/libc/utils/compile
+#    build & install libc utilities
+#
+# For musl, steps 2 and 4 are skipped, and step 3 is done after 5
+
+curdir:=toolchain
+
+# subdirectories to descend into
+$(curdir)/builddirs := $(if $(CONFIG_GDB),gdb) $(if $(CONFIG_EXTERNAL_TOOLCHAIN),wrapper,kernel-headers binutils gcc/initial gcc/final $(LIBC) fortify-headers) $(if $(CONFIG_NASM),nasm)
+ifdef CONFIG_USE_UCLIBC
+  $(curdir)/builddirs += $(LIBC)/utils
+endif
+
+# builddir dependencies
+ifeq ($(CONFIG_EXTERNAL_TOOLCHAIN),)
+  ifdef CONFIG_USE_MUSL
+    $(curdir)/kernel-headers/compile:=$(curdir)/gcc/initial/compile
+    $(curdir)/$(LIBC)/compile:=$(curdir)/kernel-headers/compile
+  else
+    $(curdir)/builddirs += $(LIBC)/headers gcc/minimal
+    $(curdir)/gcc/minimal/compile:=$(curdir)/binutils/compile
+    $(curdir)/kernel-headers/compile:=$(curdir)/gcc/minimal/compile
+    $(curdir)/$(LIBC)/headers/compile:=$(curdir)/kernel-headers/compile
+    $(curdir)/gcc/initial/compile:=$(curdir)/$(LIBC)/headers/compile
+  endif
+
+  $(curdir)/gcc/initial/compile+=$(curdir)/binutils/compile
+  $(curdir)/$(LIBC)/compile:=$(curdir)/gcc/initial/compile
+  $(curdir)/gcc/final/compile:=$(curdir)/$(LIBC)/compile $(curdir)/kernel-headers/compile
+  $(curdir)/$(LIBC)/utils/compile:=$(curdir)/gcc/final/compile
+endif
+
+ifndef DUMP_TARGET_DB
+ifneq ($(ARCH),)
+  $(TOOLCHAIN_DIR)/info.mk: .config
+	@for dir in $(TOOLCHAIN_DIR); do ( \
+		$(if $(QUIET),,set -x;) \
+		mkdir -p "$$dir"; \
+		cd "$$dir"; \
+		ln -nsf lib lib64; \
+		ln -nsf lib lib32; \
+		mkdir -p stamp lib usr/include usr/lib ; \
+	); done
+	@grep GCC_VERSION $@ >/dev/null 2>&1 || $(INSTALL_DATA) $(TOPDIR)/toolchain/info.mk $@
+	@touch $@
+endif
+endif
+
+ifdef CONFIG_BUILDBOT
+ifneq ($(wildcard $(TOPDIR)/.git),)
+  $(TOOLCHAIN_DIR)/stamp/.ver_check: $(TMP_DIR)/.build
+	cd "$(TOPDIR)"; git log --format=%h -1 toolchain > $(TMP_DIR)/.ver_check
+	cmp -s $(TMP_DIR)/.ver_check $@ || { \
+		rm -rf $(BUILD_DIR) $(STAGING_DIR) $(TOOLCHAIN_DIR) $(BUILD_DIR_TOOLCHAIN); \
+		mkdir -p $(TOOLCHAIN_DIR)/stamp; \
+		mv $(TMP_DIR)/.ver_check $@; \
+	}
+
+$(TOOLCHAIN_DIR)/info.mk $(STAGING_DIR)/.prepared: $(TOOLCHAIN_DIR)/stamp/.ver_check
+endif
+endif
+
+# prerequisites for the individual targets
+$(curdir)/ := .config prereq
+$(curdir)//compile = $(STAGING_DIR)/.prepared $(TOOLCHAIN_DIR)/info.mk $(tools/stamp-compile)
+
+ifndef DUMP_TARGET_DB
+$(TOOLCHAIN_DIR)/stamp/.gcc-initial_installed:
+endif
+
+$(curdir)/install: $(curdir)/compile
+
+$(eval $(call stampfile,$(curdir),toolchain,compile,$(TOOLCHAIN_DIR)/stamp/.gcc-initial_installed,,$(TOOLCHAIN_DIR)))
+$(eval $(call stampfile,$(curdir),toolchain,check,$(TMP_DIR)/.build))
+$(eval $(call subdir,$(curdir)))
+
--- a/toolchain/binutils/Config.in
+++ b/toolchain/binutils/Config.in
@@ -0,0 +1,31 @@
+# Choose binutils version.
+
+choice
+	prompt "Binutils Version" if TOOLCHAINOPTS
+	default BINUTILS_USE_VERSION_2_31_1 if !arc
+	default BINUTILS_USE_VERSION_2_32 if arc
+	help
+	  Select the version of binutils you wish to use.
+
+	config BINUTILS_USE_VERSION_2_29_1
+		depends on !arc
+		bool "Binutils 2.29.1"
+		select BINUTILS_VERSION_2_29_1
+
+	config BINUTILS_USE_VERSION_2_31_1
+		depends on !arc
+		bool "Binutils 2.31.1"
+		select BINUTILS_VERSION_2_31_1
+
+	config BINUTILS_USE_VERSION_2_32
+		bool "Binutils 2.32"
+		select BINUTILS_VERSION_2_32
+
+endchoice
+
+config EXTRA_BINUTILS_CONFIG_OPTIONS
+	string
+	prompt "Additional binutils configure options" if TOOLCHAINOPTS
+	default ""
+	help
+	    Any additional binutils options you may want to include....
--- a/toolchain/binutils/Config.version
+++ b/toolchain/binutils/Config.version
@@ -0,0 +1,16 @@
+config BINUTILS_VERSION_2_29_1
+	bool
+
+config BINUTILS_VERSION_2_31_1
+	default y if (!TOOLCHAINOPTS && !arc)
+	bool
+
+config BINUTILS_VERSION_2_32
+	default y if (!TOOLCHAINOPTS && arc)
+	bool
+
+config BINUTILS_VERSION
+	string
+	default "2.29.1"	       if BINUTILS_VERSION_2_29_1
+	default "2.31.1"	       if BINUTILS_VERSION_2_31_1
+	default "2.32"		       if BINUTILS_VERSION_2_32
--- a/toolchain/binutils/Makefile
+++ b/toolchain/binutils/Makefile
@@ -0,0 +1,102 @@
+#
+# Copyright (C) 2006-2013 OpenWrt.org
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=binutils
+PKG_VERSION:=$(call qstrip,$(CONFIG_BINUTILS_VERSION))
+BIN_VERSION:=$(PKG_VERSION)
+
+PKG_SOURCE_URL:=@GNU/binutils/
+PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
+
+TAR_OPTIONS += --exclude='*.rej'
+
+ifeq ($(PKG_VERSION),2.29.1)
+  PKG_HASH:=e7010a46969f9d3e53b650a518663f98a5dde3c3ae21b7d71e5e6803bc36b577
+endif
+
+ifeq ($(PKG_VERSION),2.31.1)
+  PKG_HASH:=5d20086ecf5752cc7d9134246e9588fa201740d540f7eb84d795b1f7a93bca86
+endif
+
+ifeq ($(PKG_VERSION),2.32)
+  PKG_HASH:=0ab6c55dd86a92ed561972ba15b9b70a8b9f75557f896446c82e8b36e473ee04
+endif
+
+HOST_BUILD_PARALLEL:=1
+
+PATCH_DIR:=./patches/$(PKG_VERSION)
+
+include $(INCLUDE_DIR)/toolchain-build.mk
+
+HOST_CONFIGURE_ARGS = \
+	--prefix=$(TOOLCHAIN_DIR) \
+	--build=$(GNU_HOST_NAME) \
+	--host=$(GNU_HOST_NAME) \
+	--target=$(REAL_GNU_TARGET_NAME) \
+	--with-sysroot=$(TOOLCHAIN_DIR) \
+	--enable-deterministic-archives \
+	--enable-plugins \
+	--disable-multilib \
+	--disable-werror \
+	--disable-nls \
+	--disable-sim \
+	--disable-gdb \
+	$(GRAPHITE_CONFIGURE) \
+	$(SOFT_FLOAT_CONFIG_OPTION) \
+	$(call qstrip,$(CONFIG_EXTRA_BINUTILS_CONFIG_OPTIONS))
+
+ifneq ($(CONFIG_SSP_SUPPORT),)
+  HOST_CONFIGURE_ARGS+= \
+		--enable-libssp
+else
+  HOST_CONFIGURE_ARGS+= \
+		--disable-libssp
+endif
+
+ifneq ($(CONFIG_EXTRA_TARGET_ARCH),)
+  HOST_CONFIGURE_ARGS+= \
+		--enable-targets=$(call qstrip,$(CONFIG_EXTRA_TARGET_ARCH_NAME))-linux-$(TARGET_SUFFIX)
+endif
+
+define Host/Prepare
+	$(call Host/Prepare/Default)
+	ln -snf $(notdir $(HOST_BUILD_DIR)) $(BUILD_DIR_TOOLCHAIN)/$(PKG_NAME)
+	$(CP) $(SCRIPT_DIR)/config.{guess,sub} $(HOST_BUILD_DIR)/
+	$(SED) 's, " Linaro.*,,' $(HOST_BUILD_DIR)/bfd/version.h
+endef
+
+define Host/Compile
+	+$(MAKE) $(HOST_JOBS) -C $(HOST_BUILD_DIR) all
+endef
+
+define Host/Install
+	mkdir -p $(TOOLCHAIN_DIR)/initial
+	$(MAKE) -C $(HOST_BUILD_DIR) \
+		prefix=$(TOOLCHAIN_DIR)/initial \
+		install
+	$(MAKE) -C $(HOST_BUILD_DIR) \
+		prefix=$(TOOLCHAIN_DIR) \
+		install
+	$(call FixupLibdir,$(TOOLCHAIN_DIR)/initial)
+	$(RM) $(TOOLCHAIN_DIR)/initial/lib/libiberty.a
+	$(CP) $(TOOLCHAIN_DIR)/bin/$(REAL_GNU_TARGET_NAME)-readelf $(HOST_BUILD_PREFIX)/bin/readelf
+	# ARC gcc requires extlib.
+	# If extlib is not available in "initial" folder
+	# initial gcc will fail to build libc.
+	if [ -d $(TOOLCHAIN_DIR)/extlib ]; then \
+		$(CP) -r $(TOOLCHAIN_DIR)/extlib $(TOOLCHAIN_DIR)/initial/; \
+	fi
+endef
+
+define Host/Clean
+	rm -rf \
+		$(HOST_BUILD_DIR) \
+		$(BUILD_DIR_TOOLCHAIN)/$(PKG_NAME)
+endef
+
+$(eval $(call HostBuild))
--- a/toolchain/binutils/patches/2.29.1/300-001_ld_makefile_patch.patch
+++ b/toolchain/binutils/patches/2.29.1/300-001_ld_makefile_patch.patch
@@ -0,0 +1,22 @@
+--- a/ld/Makefile.am
+++ b/ld/Makefile.am
+@@ -57,7 +57,7 @@ endif
+ # We put the scripts in the directory $(scriptdir)/ldscripts.
+ # We can't put the scripts in $(datadir) because the SEARCH_DIR
+ # directives need to be different for native and cross linkers.
+-scriptdir = $(tooldir)/lib
+scriptdir = $(libdir)
+ 
+ EMUL = @EMUL@
+ EMULATION_OFILES = @EMULATION_OFILES@
+--- a/ld/Makefile.in
+++ b/ld/Makefile.in
+@@ -446,7 +446,7 @@ AM_CFLAGS = $(WARN_CFLAGS) $(ELF_CLFAGS)
+ # We put the scripts in the directory $(scriptdir)/ldscripts.
+ # We can't put the scripts in $(datadir) because the SEARCH_DIR
+ # directives need to be different for native and cross linkers.
+-scriptdir = $(tooldir)/lib
+scriptdir = $(libdir)
+ BASEDIR = $(srcdir)/..
+ BFDDIR = $(BASEDIR)/bfd
+ INCDIR = $(BASEDIR)/include
--- a/toolchain/binutils/patches/2.29.1/300-012_check_ldrunpath_length.patch
+++ b/toolchain/binutils/patches/2.29.1/300-012_check_ldrunpath_length.patch
@@ -0,0 +1,20 @@
+--- a/ld/emultempl/elf32.em
+++ b/ld/emultempl/elf32.em
+@@ -1463,6 +1463,8 @@ fragment <<EOF
+ 	      && command_line.rpath == NULL)
+ 	    {
+ 	      path = (const char *) getenv ("LD_RUN_PATH");
+	      if ((path) && (strlen (path) == 0))
+	      	path = NULL;
+ 	      if (path
+ 		  && gld${EMULATION_NAME}_search_needed (path, &n, force))
+ 		break;
+@@ -1740,6 +1742,8 @@ gld${EMULATION_NAME}_before_allocation (
+   rpath = command_line.rpath;
+   if (rpath == NULL)
+     rpath = (const char *) getenv ("LD_RUN_PATH");
+  if ((rpath) && (strlen (rpath) == 0))
+  	rpath = NULL;
+ 
+   for (abfd = link_info.input_bfds; abfd; abfd = abfd->link.next)
+     if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
--- a/toolchain/binutils/patches/2.29.1/400-mips_no_dynamic_linking_sym.patch
+++ b/toolchain/binutils/patches/2.29.1/400-mips_no_dynamic_linking_sym.patch
@@ -0,0 +1,18 @@
+--- a/bfd/elfxx-mips.c
+++ b/bfd/elfxx-mips.c
+@@ -7871,6 +7871,7 @@ _bfd_mips_elf_create_dynamic_sections (b
+ 
+       name = SGI_COMPAT (abfd) ? "_DYNAMIC_LINK" : "_DYNAMIC_LINKING";
+       bh = NULL;
+      if (0) {
+       if (!(_bfd_generic_link_add_one_symbol
+ 	    (info, abfd, name, BSF_GLOBAL, bfd_abs_section_ptr, 0,
+ 	     NULL, FALSE, get_elf_backend_data (abfd)->collect, &bh)))
+@@ -7883,6 +7884,7 @@ _bfd_mips_elf_create_dynamic_sections (b
+ 
+       if (! bfd_elf_link_record_dynamic_symbol (info, h))
+ 	return FALSE;
+      }
+ 
+       if (! mips_elf_hash_table (info)->use_rld_obj_head)
+ 	{
--- a/toolchain/binutils/patches/2.29.1/500-Change-default-emulation-for-mips64-linux.patch
+++ b/toolchain/binutils/patches/2.29.1/500-Change-default-emulation-for-mips64-linux.patch
@@ -0,0 +1,37 @@
+--- a/bfd/config.bfd
+++ b/bfd/config.bfd
+@@ -1186,12 +1186,12 @@ case "${targ}" in
+     targ_selvecs="mips_elf32_le_vec mips_elf64_be_vec mips_elf64_le_vec mips_ecoff_be_vec mips_ecoff_le_vec"
+     ;;
+   mips64*el-*-linux*)
+-    targ_defvec=mips_elf32_ntrad_le_vec
+-    targ_selvecs="mips_elf32_ntrad_be_vec mips_elf32_trad_le_vec mips_elf32_trad_be_vec mips_elf64_trad_le_vec mips_elf64_trad_be_vec"
+    targ_defvec=mips_elf64_trad_le_vec
+    targ_selvecs="mips_elf32_ntrad_le_vec mips_elf32_ntrad_be_vec mips_elf32_trad_le_vec mips_elf32_trad_be_vec mips_elf64_trad_be_vec"
+     ;;
+   mips64*-*-linux*)
+-    targ_defvec=mips_elf32_ntrad_be_vec
+-    targ_selvecs="mips_elf32_ntrad_le_vec mips_elf32_trad_be_vec mips_elf32_trad_le_vec mips_elf64_trad_be_vec mips_elf64_trad_le_vec"
+    targ_defvec=mips_elf64_trad_be_vec
+    targ_selvecs="mips_elf32_ntrad_be_vec mips_elf32_ntrad_le_vec mips_elf32_trad_be_vec mips_elf32_trad_le_vec mips_elf64_trad_le_vec"
+     ;;
+   mips*el-*-linux*)
+     targ_defvec=mips_elf32_trad_le_vec
+--- a/ld/configure.tgt
+++ b/ld/configure.tgt
+@@ -530,11 +530,11 @@ mips*el-*-vxworks*)	targ_emul=elf32elmip
+ mips*-*-vxworks*)	targ_emul=elf32ebmipvxworks
+ 		        targ_extra_emuls="elf32elmipvxworks" ;;
+ mips*-*-windiss)	targ_emul=elf32mipswindiss ;;
+-mips64*el-*-linux-*)	targ_emul=elf32ltsmipn32
+-			targ_extra_emuls="elf32btsmipn32 elf32ltsmip elf32btsmip elf64ltsmip elf64btsmip"
+mips64*el-*-linux-*)	targ_emul=elf64ltsmip
+			targ_extra_emuls="elf32btsmipn32 elf32ltsmipn32 elf32ltsmip elf32btsmip elf64btsmip"
+ 			targ_extra_libpath=$targ_extra_emuls ;;
+-mips64*-*-linux-*)	targ_emul=elf32btsmipn32
+-			targ_extra_emuls="elf32ltsmipn32 elf32btsmip elf32ltsmip elf64btsmip elf64ltsmip"
+mips64*-*-linux-*)	targ_emul=elf64btsmip
+			targ_extra_emuls="elf32btsmipn32 elf32ltsmipn32 elf32btsmip elf32ltsmip elf64ltsmip"
+ 			targ_extra_libpath=$targ_extra_emuls ;;
+ mips*el-*-linux-*)	targ_emul=elf32ltsmip
+ 			targ_extra_emuls="elf32btsmip elf32ltsmipn32 elf64ltsmip elf32btsmipn32 elf64btsmip"
--- a/toolchain/binutils/patches/2.31.1/100-delay_evaluation_of_alignment_expressions_in_output_sections.patch
+++ b/toolchain/binutils/patches/2.31.1/100-delay_evaluation_of_alignment_expressions_in_output_sections.patch
@@ -0,0 +1,276 @@
+From 3d9c8f6b3f033a6092425b7344647fb51dbed5c6 Mon Sep 17 00:00:00 2001
+From: Alan Modra <amodra@gmail.com>
+Date: Sun, 26 Aug 2018 14:23:38 +0930
+Subject: [PATCH] Delay evaluation of alignment expressions in output sections
+
+git commit 702d16713 broke expressions using CONSTANT(COMMONPAGESIZE)
+in ALIGN or SUBALIGN of output section statements, because these
+optional fields were evaluated at script parse time and the patch in
+question delayed setting of config.commonpagesize.  The right thing to
+do is keep the tree representation of those fields for later
+evaluation.
+
+	PR 23571
+	* ldlang.h (section_alignment): Make it an expression tree.
+	(subsection_alignment): Likewise.
+	* ldlang.c (topower): Delete.
+	(output_section_statement_newfunc): Adjust initialization.
+	(init_os): Evaluate section_alignment.
+	(lang_size_sections_1): Likewise.
+	(size_input_section): Evaluate subsection_alignment.
+	(lang_enter_output_section_statement): Don't evaluate here.
+	(lang_new_phdr): Use exp_get_vma rather than exp_get_value_int.
+	* ldexp.h (exp_get_value_int): Delete.
+	(exp_get_power): Declare.
+	* ldexp.c (exp_get_value_int): Delete.
+	(exp_get_power): New function.
+	* emultempl/pe.em (place_orphan): Build expression for section
+	alignment.
+	* emultempl/pep.em (place_orphan): Likewise.
+	* testsuite/ld-scripts/pr23571.d,
+	* testsuite/ld-scripts/pr23571.t: New test.
+	* testsuite/ld-scripts/align.exp: Run it.
+---
+ ld/ChangeLog                      | 23 +++++++++++++++++++
+ ld/emultempl/pe.em                |  2 +-
+ ld/emultempl/pep.em               |  2 +-
+ ld/ldexp.c                        | 20 ++++++++++++++--
+ ld/ldexp.h                        |  4 ++--
+ ld/ldlang.c                       | 48 +++++++++++++--------------------------
+ ld/ldlang.h                       |  4 ++--
+ ld/testsuite/ld-scripts/align.exp |  4 ++++
+ ld/testsuite/ld-scripts/pr23571.d | 10 ++++++++
+ ld/testsuite/ld-scripts/pr23571.t | 11 +++++++++
+ 10 files changed, 88 insertions(+), 40 deletions(-)
+ create mode 100644 ld/testsuite/ld-scripts/pr23571.d
+ create mode 100644 ld/testsuite/ld-scripts/pr23571.t
+
+--- a/ld/emultempl/pe.em
+++ b/ld/emultempl/pe.em
+@@ -2165,7 +2165,7 @@ gld_${EMULATION_NAME}_place_orphan (asec
+ 			       &add_child);
+       if (bfd_link_relocatable (&link_info))
+ 	{
+-	  os->section_alignment = s->alignment_power;
+	  os->section_alignment = exp_intop (1U << s->alignment_power);
+ 	  os->bfd_section->alignment_power = s->alignment_power;
+ 	}
+     }
+--- a/ld/emultempl/pep.em
+++ b/ld/emultempl/pep.em
+@@ -1962,7 +1962,7 @@ gld_${EMULATION_NAME}_place_orphan (asec
+ 			       &add_child);
+       if (bfd_link_relocatable (&link_info))
+ 	{
+-	  os->section_alignment = s->alignment_power;
+	  os->section_alignment = exp_intop (1U << s->alignment_power);
+ 	  os->bfd_section->alignment_power = s->alignment_power;
+ 	}
+     }
+--- a/ld/ldexp.c
+++ b/ld/ldexp.c
+@@ -1522,10 +1522,26 @@ exp_get_vma (etree_type *tree, bfd_vma d
+   return def;
+ }
+ 
+/* Return the smallest non-negative integer such that two raised to
+   that power is at least as large as the vma evaluated at TREE, if
+   TREE is a non-NULL expression that can be resolved.  If TREE is
+   NULL or cannot be resolved, return -1.  */
+
+ int
+-exp_get_value_int (etree_type *tree, int def, char *name)
+exp_get_power (etree_type *tree, char *name)
+ {
+-  return exp_get_vma (tree, def, name);
+  bfd_vma x = exp_get_vma (tree, -1, name);
+  bfd_vma p2;
+  int n;
+
+  if (x == (bfd_vma) -1)
+    return -1;
+
+  for (n = 0, p2 = 1; p2 < x; ++n, p2 <<= 1)
+    if (p2 == 0)
+      break;
+
+  return n;
+ }
+ 
+ fill_type *
+--- a/ld/ldexp.h
+++ b/ld/ldexp.h
+@@ -229,8 +229,8 @@ void exp_print_tree
+   (etree_type *);
+ bfd_vma exp_get_vma
+   (etree_type *, bfd_vma, char *);
+-int exp_get_value_int
+-  (etree_type *, int, char *);
+int exp_get_power
+  (etree_type *, char *);
+ fill_type *exp_get_fill
+   (etree_type *, fill_type *, char *);
+ bfd_vma exp_get_abs_int
+--- a/ld/ldlang.c
+++ b/ld/ldlang.c
+@@ -1199,8 +1199,8 @@ output_section_statement_newfunc (struct
+   ret = (struct out_section_hash_entry *) entry;
+   memset (&ret->s, 0, sizeof (ret->s));
+   ret->s.header.type = lang_output_section_statement_enum;
+-  ret->s.output_section_statement.subsection_alignment = -1;
+-  ret->s.output_section_statement.section_alignment = -1;
+  ret->s.output_section_statement.subsection_alignment = NULL;
+  ret->s.output_section_statement.section_alignment = NULL;
+   ret->s.output_section_statement.block_value = 1;
+   lang_list_init (&ret->s.output_section_statement.children);
+   lang_statement_append (stat_ptr, &ret->s, &ret->s.header.next);
+@@ -2193,8 +2193,9 @@ init_os (lang_output_section_statement_t
+     exp_init_os (s->load_base);
+ 
+   /* If supplied an alignment, set it.  */
+-  if (s->section_alignment != -1)
+-    s->bfd_section->alignment_power = s->section_alignment;
+  if (s->section_alignment != NULL)
+    s->bfd_section->alignment_power = exp_get_power (s->section_alignment,
+						     "section alignment");
+ }
+ 
+ /* Make sure that all output sections mentioned in an expression are
+@@ -4706,8 +4707,10 @@ size_input_section
+ 	 is greater than any seen before, then record it too.  Perform
+ 	 the alignment by inserting a magic 'padding' statement.  */
+ 
+-      if (output_section_statement->subsection_alignment != -1)
+-	i->alignment_power = output_section_statement->subsection_alignment;
+      if (output_section_statement->subsection_alignment != NULL)
+	i->alignment_power
+	  = exp_get_power (output_section_statement->subsection_alignment,
+			   "subsection alignment");
+ 
+       if (o->alignment_power < i->alignment_power)
+ 	o->alignment_power = i->alignment_power;
+@@ -5147,7 +5150,8 @@ lang_size_sections_1
+ 		    section_alignment = os->bfd_section->alignment_power;
+ 		  }
+ 		else
+-		  section_alignment = os->section_alignment;
+		  section_alignment = exp_get_power (os->section_alignment,
+						     "section alignment");
+ 
+ 		/* Align to what the section needs.  */
+ 		if (section_alignment > 0)
+@@ -5225,7 +5229,8 @@ lang_size_sections_1
+ 		       only align according to the value in the output
+ 		       statement.  */
+ 		    if (os->lma_region != os->region)
+-		      section_alignment = os->section_alignment;
+		      section_alignment = exp_get_power (os->section_alignment,
+							 "section alignment");
+ 		    if (section_alignment > 0)
+ 		      lma = align_power (lma, section_alignment);
+ 		  }
+@@ -6673,25 +6678,6 @@ lang_add_output (const char *name, int f
+     }
+ }
+ 
+-static int
+-topower (int x)
+-{
+-  unsigned int i = 1;
+-  int l;
+-
+-  if (x < 0)
+-    return -1;
+-
+-  for (l = 0; l < 32; l++)
+-    {
+-      if (i >= (unsigned int) x)
+-	return l;
+-      i <<= 1;
+-    }
+-
+-  return 0;
+-}
+-
+ lang_output_section_statement_type *
+ lang_enter_output_section_statement (const char *output_section_statement_name,
+ 				     etree_type *address_exp,
+@@ -6727,10 +6713,8 @@ lang_enter_output_section_statement (con
+     einfo (_("%F%P:%pS: error: align with input and explicit align specified\n"),
+ 	   NULL);
+ 
+-  os->subsection_alignment =
+-    topower (exp_get_value_int (subalign, -1, "subsection alignment"));
+-  os->section_alignment =
+-    topower (exp_get_value_int (align, -1, "section alignment"));
+  os->subsection_alignment = subalign;
+  os->section_alignment = align;
+ 
+   os->load_base = ebase;
+   return os;
+@@ -7748,7 +7732,7 @@ lang_new_phdr (const char *name,
+   n = (struct lang_phdr *) stat_alloc (sizeof (struct lang_phdr));
+   n->next = NULL;
+   n->name = name;
+-  n->type = exp_get_value_int (type, 0, "program header type");
+  n->type = exp_get_vma (type, 0, "program header type");
+   n->filehdr = filehdr;
+   n->phdrs = phdrs;
+   n->at = at;
+--- a/ld/ldlang.h
+++ b/ld/ldlang.h
+@@ -143,6 +143,8 @@ typedef struct lang_output_section_state
+   fill_type *fill;
+   union etree_union *addr_tree;
+   union etree_union *load_base;
+  union etree_union *section_alignment;
+  union etree_union *subsection_alignment;
+ 
+   /* If non-null, an expression to evaluate after setting the section's
+      size.  The expression is evaluated inside REGION (above) with '.'
+@@ -153,8 +155,6 @@ typedef struct lang_output_section_state
+   lang_output_section_phdr_list *phdrs;
+ 
+   unsigned int block_value;
+-  int subsection_alignment;	/* Alignment of components.  */
+-  int section_alignment;	/* Alignment of start of section.  */
+   int constraint;
+   flagword flags;
+   enum section_type sectype;
+--- a/ld/testsuite/ld-scripts/align.exp
+++ b/ld/testsuite/ld-scripts/align.exp
+@@ -53,3 +53,7 @@ if ![is_aout_format] {
+ }
+ run_dump_test align2c
+ set LDFLAGS "$saved_LDFLAGS"
+
+if { [is_elf_format] && ![is_generic_elf] } {
+    run_dump_test pr23571
+}
+--- /dev/null
+++ b/ld/testsuite/ld-scripts/pr23571.d
+@@ -0,0 +1,10 @@
+#source: align2a.s
+#ld: -T pr23571.t -z common-page-size=0x1000
+#objdump: -h -w
+
+.*: +file format .*
+
+Sections:
+Idx Name +Size +VMA +LMA +File off +Algn +Flags
+ +0 \.text +[0-9a-f]* +0+1000 +0+1000 .*
+ +1 \.data +[0-9a-f]* +0+2000 +0+2000 +[0-9a-f]* +2\*\*12 .*
+--- /dev/null
+++ b/ld/testsuite/ld-scripts/pr23571.t
+@@ -0,0 +1,11 @@
+SECTIONS
+{
+  .text CONSTANT(COMMONPAGESIZE) : {
+    *(.text)
+  }
+
+  .data : ALIGN(CONSTANT(COMMONPAGESIZE)) {
+    *(.data)
+  }
+  /DISCARD/ : {*(*)}
+}
--- a/toolchain/binutils/patches/2.31.1/300-001_ld_makefile_patch.patch
+++ b/toolchain/binutils/patches/2.31.1/300-001_ld_makefile_patch.patch
@@ -0,0 +1,22 @@
+--- a/ld/Makefile.am
+++ b/ld/Makefile.am
+@@ -57,7 +57,7 @@ endif
+ # We put the scripts in the directory $(scriptdir)/ldscripts.
+ # We can't put the scripts in $(datadir) because the SEARCH_DIR
+ # directives need to be different for native and cross linkers.
+-scriptdir = $(tooldir)/lib
+scriptdir = $(libdir)
+ 
+ EMUL = @EMUL@
+ EMULATION_OFILES = @EMULATION_OFILES@
+--- a/ld/Makefile.in
+++ b/ld/Makefile.in
+@@ -563,7 +563,7 @@ AM_CFLAGS = $(WARN_CFLAGS) $(ELF_CLFAGS)
+ # We put the scripts in the directory $(scriptdir)/ldscripts.
+ # We can't put the scripts in $(datadir) because the SEARCH_DIR
+ # directives need to be different for native and cross linkers.
+-scriptdir = $(tooldir)/lib
+scriptdir = $(libdir)
+ BASEDIR = $(srcdir)/..
+ BFDDIR = $(BASEDIR)/bfd
+ INCDIR = $(BASEDIR)/include
--- a/toolchain/binutils/patches/2.31.1/300-012_check_ldrunpath_length.patch
+++ b/toolchain/binutils/patches/2.31.1/300-012_check_ldrunpath_length.patch
@@ -0,0 +1,20 @@
+--- a/ld/emultempl/elf32.em
+++ b/ld/emultempl/elf32.em
+@@ -1471,6 +1471,8 @@ fragment <<EOF
+ 	      && command_line.rpath == NULL)
+ 	    {
+ 	      path = (const char *) getenv ("LD_RUN_PATH");
+	      if ((path) && (strlen (path) == 0))
+	      	path = NULL;
+ 	      if (path
+ 		  && gld${EMULATION_NAME}_search_needed (path, &n, force))
+ 		break;
+@@ -1751,6 +1753,8 @@ gld${EMULATION_NAME}_before_allocation (
+   rpath = command_line.rpath;
+   if (rpath == NULL)
+     rpath = (const char *) getenv ("LD_RUN_PATH");
+  if ((rpath) && (strlen (rpath) == 0))
+  	rpath = NULL;
+ 
+   for (abfd = link_info.input_bfds; abfd; abfd = abfd->link.next)
+     if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
--- a/toolchain/binutils/patches/2.31.1/400-mips_no_dynamic_linking_sym.patch
+++ b/toolchain/binutils/patches/2.31.1/400-mips_no_dynamic_linking_sym.patch
@@ -0,0 +1,18 @@
+--- a/bfd/elfxx-mips.c
+++ b/bfd/elfxx-mips.c
+@@ -7888,6 +7888,7 @@ _bfd_mips_elf_create_dynamic_sections (b
+ 
+       name = SGI_COMPAT (abfd) ? "_DYNAMIC_LINK" : "_DYNAMIC_LINKING";
+       bh = NULL;
+      if (0) {
+       if (!(_bfd_generic_link_add_one_symbol
+ 	    (info, abfd, name, BSF_GLOBAL, bfd_abs_section_ptr, 0,
+ 	     NULL, FALSE, get_elf_backend_data (abfd)->collect, &bh)))
+@@ -7900,6 +7901,7 @@ _bfd_mips_elf_create_dynamic_sections (b
+ 
+       if (! bfd_elf_link_record_dynamic_symbol (info, h))
+ 	return FALSE;
+      }
+ 
+       if (! mips_elf_hash_table (info)->use_rld_obj_head)
+ 	{
--- a/toolchain/binutils/patches/2.31.1/500-Change-default-emulation-for-mips64-linux.patch
+++ b/toolchain/binutils/patches/2.31.1/500-Change-default-emulation-for-mips64-linux.patch
@@ -0,0 +1,37 @@
+--- a/bfd/config.bfd
+++ b/bfd/config.bfd
+@@ -913,12 +913,12 @@ case "${targ}" in
+     targ_selvecs="mips_elf32_le_vec mips_elf64_be_vec mips_elf64_le_vec mips_ecoff_be_vec mips_ecoff_le_vec"
+     ;;
+   mips64*el-*-linux*)
+-    targ_defvec=mips_elf32_ntrad_le_vec
+-    targ_selvecs="mips_elf32_ntrad_be_vec mips_elf32_trad_le_vec mips_elf32_trad_be_vec mips_elf64_trad_le_vec mips_elf64_trad_be_vec"
+    targ_defvec=mips_elf64_trad_le_vec
+    targ_selvecs="mips_elf32_ntrad_le_vec mips_elf32_ntrad_be_vec mips_elf32_trad_le_vec mips_elf32_trad_be_vec mips_elf64_trad_be_vec"
+     ;;
+   mips64*-*-linux*)
+-    targ_defvec=mips_elf32_ntrad_be_vec
+-    targ_selvecs="mips_elf32_ntrad_le_vec mips_elf32_trad_be_vec mips_elf32_trad_le_vec mips_elf64_trad_be_vec mips_elf64_trad_le_vec"
+    targ_defvec=mips_elf64_trad_be_vec
+    targ_selvecs="mips_elf32_ntrad_be_vec mips_elf32_ntrad_le_vec mips_elf32_trad_be_vec mips_elf32_trad_le_vec mips_elf64_trad_le_vec"
+     ;;
+   mips*el-*-linux*)
+     targ_defvec=mips_elf32_trad_le_vec
+--- a/ld/configure.tgt
+++ b/ld/configure.tgt
+@@ -464,11 +464,11 @@ mips*el-*-vxworks*)	targ_emul=elf32elmip
+ mips*-*-vxworks*)	targ_emul=elf32ebmipvxworks
+ 			targ_extra_emuls="elf32elmipvxworks" ;;
+ mips*-*-windiss)	targ_emul=elf32mipswindiss ;;
+-mips64*el-*-linux-*)	targ_emul=elf32ltsmipn32
+-			targ_extra_emuls="elf32btsmipn32 elf32ltsmip elf32btsmip elf64ltsmip elf64btsmip"
+mips64*el-*-linux-*)	targ_emul=elf64ltsmip
+			targ_extra_emuls="elf32btsmipn32 elf32ltsmipn32 elf32ltsmip elf32btsmip elf64btsmip"
+ 			targ_extra_libpath=$targ_extra_emuls ;;
+-mips64*-*-linux-*)	targ_emul=elf32btsmipn32
+-			targ_extra_emuls="elf32ltsmipn32 elf32btsmip elf32ltsmip elf64btsmip elf64ltsmip"
+mips64*-*-linux-*)	targ_emul=elf64btsmip
+			targ_extra_emuls="elf32btsmipn32 elf32ltsmipn32 elf32btsmip elf32ltsmip elf64ltsmip"
+ 			targ_extra_libpath=$targ_extra_emuls ;;
+ mips*el-*-linux-*)	targ_emul=elf32ltsmip
+ 			targ_extra_emuls="elf32btsmip elf32ltsmipn32 elf64ltsmip elf32btsmipn32 elf64btsmip"
--- a/toolchain/binutils/patches/2.32/300-001_ld_makefile_patch.patch
+++ b/toolchain/binutils/patches/2.32/300-001_ld_makefile_patch.patch
@@ -0,0 +1,22 @@
+--- a/ld/Makefile.am
+++ b/ld/Makefile.am
+@@ -57,7 +57,7 @@ endif
+ # We put the scripts in the directory $(scriptdir)/ldscripts.
+ # We can't put the scripts in $(datadir) because the SEARCH_DIR
+ # directives need to be different for native and cross linkers.
+-scriptdir = $(tooldir)/lib
+scriptdir = $(libdir)
+ 
+ EMUL = @EMUL@
+ EMULATION_OFILES = @EMULATION_OFILES@
+--- a/ld/Makefile.in
+++ b/ld/Makefile.in
+@@ -563,7 +563,7 @@ AM_CFLAGS = $(WARN_CFLAGS) $(ELF_CLFAGS)
+ # We put the scripts in the directory $(scriptdir)/ldscripts.
+ # We can't put the scripts in $(datadir) because the SEARCH_DIR
+ # directives need to be different for native and cross linkers.
+-scriptdir = $(tooldir)/lib
+scriptdir = $(libdir)
+ BASEDIR = $(srcdir)/..
+ BFDDIR = $(BASEDIR)/bfd
+ INCDIR = $(BASEDIR)/include
--- a/toolchain/binutils/patches/2.32/300-012_check_ldrunpath_length.patch
+++ b/toolchain/binutils/patches/2.32/300-012_check_ldrunpath_length.patch
@@ -0,0 +1,20 @@
+--- a/ld/emultempl/elf32.em
+++ b/ld/emultempl/elf32.em
+@@ -1471,6 +1471,8 @@ fragment <<EOF
+ 	      && command_line.rpath == NULL)
+ 	    {
+ 	      path = (const char *) getenv ("LD_RUN_PATH");
+	      if ((path) && (strlen (path) == 0))
+	      	path = NULL;
+ 	      if (path
+ 		  && gld${EMULATION_NAME}_search_needed (path, &n, force))
+ 		break;
+@@ -1746,6 +1748,8 @@ gld${EMULATION_NAME}_before_allocation (
+   rpath = command_line.rpath;
+   if (rpath == NULL)
+     rpath = (const char *) getenv ("LD_RUN_PATH");
+  if ((rpath) && (strlen (rpath) == 0))
+  	rpath = NULL;
+ 
+   for (abfd = link_info.input_bfds; abfd; abfd = abfd->link.next)
+     if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
--- a/toolchain/binutils/patches/2.32/400-mips_no_dynamic_linking_sym.patch
+++ b/toolchain/binutils/patches/2.32/400-mips_no_dynamic_linking_sym.patch
@@ -0,0 +1,18 @@
+--- a/bfd/elfxx-mips.c
+++ b/bfd/elfxx-mips.c
+@@ -8001,6 +8001,7 @@ _bfd_mips_elf_create_dynamic_sections (b
+ 
+       name = SGI_COMPAT (abfd) ? "_DYNAMIC_LINK" : "_DYNAMIC_LINKING";
+       bh = NULL;
+      if (0) {
+       if (!(_bfd_generic_link_add_one_symbol
+ 	    (info, abfd, name, BSF_GLOBAL, bfd_abs_section_ptr, 0,
+ 	     NULL, FALSE, get_elf_backend_data (abfd)->collect, &bh)))
+@@ -8013,6 +8014,7 @@ _bfd_mips_elf_create_dynamic_sections (b
+ 
+       if (! bfd_elf_link_record_dynamic_symbol (info, h))
+ 	return FALSE;
+      }
+ 
+       if (! mips_elf_hash_table (info)->use_rld_obj_head)
+ 	{
--- a/toolchain/binutils/patches/2.32/500-Change-default-emulation-for-mips64-linux.patch
+++ b/toolchain/binutils/patches/2.32/500-Change-default-emulation-for-mips64-linux.patch
@@ -0,0 +1,37 @@
+--- a/bfd/config.bfd
+++ b/bfd/config.bfd
+@@ -919,12 +919,12 @@ case "${targ}" in
+     targ_selvecs="mips_elf32_le_vec mips_elf64_be_vec mips_elf64_le_vec mips_ecoff_be_vec mips_ecoff_le_vec"
+     ;;
+   mips64*el-*-linux*)
+-    targ_defvec=mips_elf32_ntrad_le_vec
+-    targ_selvecs="mips_elf32_ntrad_be_vec mips_elf32_trad_le_vec mips_elf32_trad_be_vec mips_elf64_trad_le_vec mips_elf64_trad_be_vec"
+    targ_defvec=mips_elf64_trad_le_vec
+    targ_selvecs="mips_elf32_ntrad_le_vec mips_elf32_ntrad_be_vec mips_elf32_trad_le_vec mips_elf32_trad_be_vec mips_elf64_trad_be_vec"
+     ;;
+   mips64*-*-linux*)
+-    targ_defvec=mips_elf32_ntrad_be_vec
+-    targ_selvecs="mips_elf32_ntrad_le_vec mips_elf32_trad_be_vec mips_elf32_trad_le_vec mips_elf64_trad_be_vec mips_elf64_trad_le_vec"
+    targ_defvec=mips_elf64_trad_be_vec
+    targ_selvecs="mips_elf32_ntrad_be_vec mips_elf32_ntrad_le_vec mips_elf32_trad_be_vec mips_elf32_trad_le_vec mips_elf64_trad_le_vec"
+     ;;
+   mips*el-*-linux*)
+     targ_defvec=mips_elf32_trad_le_vec
+--- a/ld/configure.tgt
+++ b/ld/configure.tgt
+@@ -468,11 +468,11 @@ mips*el-*-vxworks*)	targ_emul=elf32elmip
+ mips*-*-vxworks*)	targ_emul=elf32ebmipvxworks
+ 			targ_extra_emuls="elf32elmipvxworks" ;;
+ mips*-*-windiss)	targ_emul=elf32mipswindiss ;;
+-mips64*el-*-linux-*)	targ_emul=elf32ltsmipn32
+-			targ_extra_emuls="elf32btsmipn32 elf32ltsmip elf32btsmip elf64ltsmip elf64btsmip"
+mips64*el-*-linux-*)	targ_emul=elf64ltsmip
+			targ_extra_emuls="elf32btsmipn32 elf32ltsmipn32 elf32ltsmip elf32btsmip elf64btsmip"
+ 			targ_extra_libpath=$targ_extra_emuls ;;
+-mips64*-*-linux-*)	targ_emul=elf32btsmipn32
+-			targ_extra_emuls="elf32ltsmipn32 elf32btsmip elf32ltsmip elf64btsmip elf64ltsmip"
+mips64*-*-linux-*)	targ_emul=elf64btsmip
+			targ_extra_emuls="elf32btsmipn32 elf32ltsmipn32 elf32btsmip elf32ltsmip elf64ltsmip"
+ 			targ_extra_libpath=$targ_extra_emuls ;;
+ mips*el-*-linux-*)	targ_emul=elf32ltsmip
+ 			targ_extra_emuls="elf32btsmip elf32ltsmipn32 elf64ltsmip elf32btsmipn32 elf64btsmip"
--- a/toolchain/fortify-headers/Makefile
+++ b/toolchain/fortify-headers/Makefile
@@ -0,0 +1,28 @@
+#
+# Copyright (C) 2015 OpenWrt.org
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+include $(TOPDIR)/rules.mk
+include $(INCLUDE_DIR)/target.mk
+
+PKG_NAME:=fortify-headers
+PKG_VERSION:=1.1
+PKG_RELEASE=1
+
+PKG_SOURCE_URL:=http://dl.2f30.org/releases
+PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
+PKG_HASH:=6ba5d860a2d2ba4c3346924b93930c34856eafe148bdbdf271ecab8065201fb6
+
+include $(INCLUDE_DIR)/toolchain-build.mk
+
+define Host/Compile
+	true
+endef
+
+define Host/Install
+	$(MAKE) -C $(HOST_BUILD_DIR) PREFIX="" DESTDIR="$(TOOLCHAIN_DIR)" install
+endef
+
+$(eval $(call HostBuild))
--- a/toolchain/gcc/Config.in
+++ b/toolchain/gcc/Config.in
@@ -0,0 +1,78 @@
+# Choose gcc version.
+
+choice
+	prompt "GCC compiler Version" if TOOLCHAINOPTS
+	default GCC_USE_VERSION_8 if arc
+	default GCC_USE_VERSION_7
+	help
+	  Select the version of gcc you wish to use.
+
+	config GCC_USE_VERSION_5
+		bool "gcc 5.x"
+		depends on !arc
+
+	config GCC_USE_VERSION_7
+		bool "gcc 7.x"
+		depends on !arc
+
+	config GCC_USE_VERSION_8
+		bool "gcc 8.x"
+endchoice
+
+config GCC_USE_GRAPHITE
+	bool
+	prompt "Compile in support for the new Graphite framework in GCC 4.4+" if TOOLCHAINOPTS
+
+config EXTRA_GCC_CONFIG_OPTIONS
+	string
+	prompt "Additional gcc configure options" if TOOLCHAINOPTS
+	default ""
+	help
+	    Any additional gcc options you may want to include....
+
+config GCC_DEFAULT_PIE
+	bool
+	prompt "Build executable with PIE enabled by default" if TOOLCHAINOPTS
+	depends on !GCC_USE_VERSION_5
+	default n
+	help
+	    Use gcc configure option --enable-default-pie to turn on -fPIE and -pie by default.
+
+config GCC_DEFAULT_SSP
+	bool
+	prompt "Build executable with Stack-Smashing Protection enabled by default" if TOOLCHAINOPTS
+	default n
+	help
+	    Use gcc configure option --enable-default-ssp to turn on -fstack-protector-strong by default.
+
+config GCC_LIBSSP
+	bool
+	prompt "Build gcc libssp" if TOOLCHAINOPTS
+	depends on !USE_MUSL
+	default y if !USE_MUSL
+	help
+	    Enable Stack-Smashing Protection support
+
+config SJLJ_EXCEPTIONS
+	bool
+	prompt "Use setjump()/longjump() exceptions" if TOOLCHAINOPTS
+	default n
+	help
+	    Use old setjump()/longjump() exceptions instead of the newer
+	    frame unwinding exceptions handling routines.  Warning: increases
+	    code size and runtime memory usage.
+
+config INSTALL_GFORTRAN
+	bool
+	prompt "Build/install fortran compiler?" if TOOLCHAINOPTS
+	default n
+	help
+	    Build/install GNU fortran compiler ?
+
+config INSTALL_GCCGO
+	bool
+	prompt "Build/install Go compiler?" if TOOLCHAINOPTS
+	depends on USE_GLIBC || BROKEN
+	default n
+	help
+	    Build/install GNU gccgo compiler ?
--- a/toolchain/gcc/Config.version
+++ b/toolchain/gcc/Config.version
@@ -0,0 +1,19 @@
+config GCC_VERSION_5
+	default y if GCC_USE_VERSION_5
+	bool
+
+config GCC_VERSION_8
+	default y if GCC_USE_VERSION_8
+	default y if arc
+	bool
+
+config GCC_USE_EMBEDDED_PATH_REMAP
+	default y if GCC_VERSION_8
+	default n
+	bool
+
+config GCC_VERSION
+	string
+	default "5.5.0"		if GCC_VERSION_5
+	default "8.3.0"		if GCC_VERSION_8
+	default "7.5.0"
--- a/toolchain/gcc/common.mk
+++ b/toolchain/gcc/common.mk
@@ -0,0 +1,231 @@
+#
+# Copyright (C) 2002-2003 Erik Andersen <andersen@uclibc.org>
+# Copyright (C) 2004 Manuel Novoa III <mjn3@uclibc.org>
+# Copyright (C) 2005-2006 Felix Fietkau <nbd@nbd.name>
+# Copyright (C) 2006-2014 OpenWrt.org
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=gcc
+GCC_VERSION:=$(call qstrip,$(CONFIG_GCC_VERSION))
+PKG_VERSION:=$(firstword $(subst +, ,$(GCC_VERSION)))
+GCC_DIR:=$(PKG_NAME)-$(PKG_VERSION)
+
+PKG_SOURCE_URL:=@GNU/gcc/gcc-$(PKG_VERSION)
+PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
+
+ifeq ($(PKG_VERSION),5.5.0)
+  PKG_HASH:=530cea139d82fe542b358961130c69cfde8b3d14556370b65823d2f91f0ced87
+endif
+
+ifeq ($(PKG_VERSION),7.5.0)
+  PKG_HASH:=b81946e7f01f90528a1f7352ab08cc602b9ccc05d4e44da4bd501c5a189ee661
+endif
+
+ifeq ($(PKG_VERSION),8.3.0)
+  PKG_HASH:=64baadfe6cc0f4947a84cb12d7f0dfaf45bb58b7e92461639596c21e02d97d2c
+endif
+
+PATCH_DIR=../patches/$(GCC_VERSION)
+
+BUGURL=http://bugs.openwrt.org/
+PKGVERSION=OpenWrt GCC $(PKG_VERSION) $(REVISION)
+
+HOST_BUILD_PARALLEL:=1
+
+include $(INCLUDE_DIR)/toolchain-build.mk
+
+HOST_SOURCE_DIR:=$(HOST_BUILD_DIR)
+ifeq ($(GCC_VARIANT),minimal)
+  GCC_BUILD_DIR:=$(HOST_BUILD_DIR)-$(GCC_VARIANT)
+else
+  HOST_BUILD_DIR:=$(HOST_BUILD_DIR)-$(GCC_VARIANT)
+  GCC_BUILD_DIR:=$(HOST_BUILD_DIR)
+endif
+
+HOST_STAMP_PREPARED:=$(HOST_BUILD_DIR)/.prepared
+HOST_STAMP_BUILT:=$(GCC_BUILD_DIR)/.built
+HOST_STAMP_CONFIGURED:=$(GCC_BUILD_DIR)/.configured
+HOST_STAMP_INSTALLED:=$(HOST_BUILD_PREFIX)/stamp/.gcc_$(GCC_VARIANT)_installed
+
+SEP:=,
+TARGET_LANGUAGES:="c,c++$(if $(CONFIG_INSTALL_GFORTRAN),$(SEP)fortran)$(if $(CONFIG_INSTALL_GCCGO),$(SEP)go)"
+
+TAR_OPTIONS += \
+	--exclude-from='$(CURDIR)/../exclude-testsuite' --exclude=gcc/ada/*.ad* \
+	--exclude=libjava
+
+export libgcc_cv_fixed_point=no
+ifdef CONFIG_USE_UCLIBC
+  export glibcxx_cv_c99_math_tr1=no
+endif
+ifdef CONFIG_INSTALL_GCCGO
+  export libgo_cv_c_split_stack_supported=no
+endif
+
+ifdef CONFIG_GCC_USE_GRAPHITE
+  GRAPHITE_CONFIGURE:= --with-isl=$(TOPDIR)/staging_dir/host
+else
+  GRAPHITE_CONFIGURE:= --without-isl --without-cloog
+endif
+
+GCC_CONFIGURE:= \
+	SHELL="$(BASH)" \
+	$(if $(shell gcc --version 2>&1 | grep -E "Apple.(LLVM|clang)"), \
+		CFLAGS="-O2 -fbracket-depth=512 -pipe" \
+		CXXFLAGS="-O2 -fbracket-depth=512 -pipe" \
+	) \
+	$(HOST_SOURCE_DIR)/configure \
+		--with-bugurl=$(BUGURL) \
+		--with-pkgversion="$(PKGVERSION)" \
+		--prefix=$(TOOLCHAIN_DIR) \
+		--build=$(GNU_HOST_NAME) \
+		--host=$(GNU_HOST_NAME) \
+		--target=$(REAL_GNU_TARGET_NAME) \
+		--with-gnu-ld \
+		--enable-target-optspace \
+		--disable-libgomp \
+		--disable-libmudflap \
+		--disable-multilib \
+		--disable-libmpx \
+		--disable-nls \
+		$(GRAPHITE_CONFIGURE) \
+		--with-host-libstdcxx=-lstdc++ \
+		$(SOFT_FLOAT_CONFIG_OPTION) \
+		$(call qstrip,$(CONFIG_EXTRA_GCC_CONFIG_OPTIONS)) \
+		$(if $(CONFIG_mips64)$(CONFIG_mips64el),--with-arch=mips64 \
+			--with-abi=$(call qstrip,$(CONFIG_MIPS64_ABI))) \
+		$(if $(CONFIG_arc),--with-cpu=$(CONFIG_CPU_TYPE)) \
+		--with-gmp=$(TOPDIR)/staging_dir/host \
+		--with-mpfr=$(TOPDIR)/staging_dir/host \
+		--with-mpc=$(TOPDIR)/staging_dir/host \
+		--disable-decimal-float \
+		--with-diagnostics-color=auto-if-env
+ifneq ($(CONFIG_mips)$(CONFIG_mipsel),)
+  GCC_CONFIGURE += --with-mips-plt
+endif
+
+ifneq ($(CONFIG_GCC_DEFAULT_PIE),)
+  GCC_CONFIGURE+= \
+		--enable-default-pie
+endif
+
+ifneq ($(CONFIG_GCC_DEFAULT_SSP),)
+  GCC_CONFIGURE+= \
+		--enable-default-ssp
+endif
+
+ifneq ($(CONFIG_GCC_LIBSSP),)
+  GCC_CONFIGURE+= \
+		--enable-libssp
+else
+  GCC_CONFIGURE+= \
+		--disable-libssp
+endif
+
+ifneq ($(CONFIG_EXTRA_TARGET_ARCH),)
+  GCC_CONFIGURE+= \
+		--enable-biarch \
+		--enable-targets=$(call qstrip,$(CONFIG_EXTRA_TARGET_ARCH_NAME))-linux-$(TARGET_SUFFIX)
+endif
+
+ifdef CONFIG_sparc
+  GCC_CONFIGURE+= \
+		--enable-targets=all \
+		--with-long-double-128
+endif
+
+ifeq ($(LIBC),uClibc)
+  GCC_CONFIGURE+= \
+		--disable-__cxa_atexit
+else
+  GCC_CONFIGURE+= \
+		--enable-__cxa_atexit
+endif
+
+ifneq ($(GCC_ARCH),)
+  GCC_CONFIGURE+= --with-arch=$(GCC_ARCH)
+endif
+
+ifeq ($(CONFIG_arm),y)
+  GCC_CONFIGURE+= \
+	--with-cpu=$(word 1, $(subst +," ,$(CONFIG_CPU_TYPE)))
+
+  ifneq ($(CONFIG_SOFT_FLOAT),y)
+    GCC_CONFIGURE+= \
+		--with-fpu=$(word 2, $(subst +, ",$(CONFIG_CPU_TYPE))) \
+		--with-float=hard
+  endif
+
+  # Do not let TARGET_CFLAGS get poisoned by extra CPU optimization flags
+  # that do not belong here. The cpu,fpu type should be specified via
+  # --with-cpu and --with-fpu for ARM and not CFLAGS.
+  TARGET_CFLAGS:=$(filter-out -m%,$(call qstrip,$(TARGET_CFLAGS)))
+endif
+
+ifeq ($(CONFIG_TARGET_x86)$(CONFIG_USE_GLIBC)$(CONFIG_INSTALL_GCCGO),yyy)
+  TARGET_CFLAGS+=-fno-split-stack
+endif
+
+GCC_MAKE:= \
+	export SHELL="$(BASH)"; \
+	$(MAKE) \
+		CFLAGS="$(HOST_CFLAGS)" \
+		CFLAGS_FOR_TARGET="$(TARGET_CFLAGS)" \
+		CXXFLAGS_FOR_TARGET="$(TARGET_CFLAGS)" \
+		GOCFLAGS_FOR_TARGET="$(TARGET_CFLAGS)"
+
+define Host/SetToolchainInfo
+	$(SED) 's,TARGET_CROSS=.*,TARGET_CROSS=$(REAL_GNU_TARGET_NAME)-,' $(TOOLCHAIN_DIR)/info.mk
+	$(SED) 's,GCC_VERSION=.*,GCC_VERSION=$(GCC_VERSION),' $(TOOLCHAIN_DIR)/info.mk
+endef
+
+ifneq ($(GCC_PREPARE),)
+  define Host/Prepare
+	$(call Host/SetToolchainInfo)
+	$(call Host/Prepare/Default)
+	ln -snf $(GCC_DIR) $(BUILD_DIR_TOOLCHAIN)/$(PKG_NAME)
+	$(CP) $(SCRIPT_DIR)/config.{guess,sub} $(HOST_SOURCE_DIR)/
+	$(SED) 's,^MULTILIB_OSDIRNAMES,# MULTILIB_OSDIRNAMES,' $(HOST_SOURCE_DIR)/gcc/config/*/t-*
+	$(SED) 'd' $(HOST_SOURCE_DIR)/gcc/DEV-PHASE
+	$(SED) 's, DATESTAMP,,' $(HOST_SOURCE_DIR)/gcc/version.c
+	#(cd $(HOST_SOURCE_DIR)/libstdc++-v3; autoconf;);
+	$(SED) 's,gcc_no_link=yes,gcc_no_link=no,' $(HOST_SOURCE_DIR)/libstdc++-v3/configure
+	mkdir -p $(GCC_BUILD_DIR)
+  endef
+else
+  define Host/Prepare
+	mkdir -p $(GCC_BUILD_DIR)
+  endef
+endif
+
+define Host/Configure
+	(cd $(GCC_BUILD_DIR) && rm -f config.cache; \
+		$(GCC_CONFIGURE) \
+	);
+endef
+
+define Host/Clean
+	rm -rf $(if $(GCC_PREPARE),$(HOST_SOURCE_DIR)) \
+		$(HOST_BUILD_PREFIX)/stamp/.gcc_* \
+		$(HOST_BUILD_PREFIX)/stamp/.binutils_* \
+		$(GCC_BUILD_DIR) \
+		$(BUILD_DIR_TOOLCHAIN)/$(PKG_NAME) \
+		$(TOOLCHAIN_DIR)/$(REAL_GNU_TARGET_NAME) \
+		$(TOOLCHAIN_DIR)/bin/$(REAL_GNU_TARGET_NAME)-gc* \
+		$(TOOLCHAIN_DIR)/bin/$(REAL_GNU_TARGET_NAME)-c*
+endef
--- a/toolchain/gcc/exclude-testsuite
+++ b/toolchain/gcc/exclude-testsuite
@@ -0,0 +1,9 @@
+gcc-*/gcc/testsuite/ada
+gcc-*/gcc/testsuite/brig.dg
+gcc-*/gcc/testsuite/c-c++-common
+gcc-*/gcc/testsuite/ChangeLog*
+gcc-*/gcc/testsuite/config
+gcc-*/gcc/testsuite/g*
+gcc-*/gcc/testsuite/jit.dg
+gcc-*/gcc/testsuite/lib
+gcc-*/gcc/testsuite/o*
--- a/toolchain/gcc/files/alternate-arch-cc.in
+++ b/toolchain/gcc/files/alternate-arch-cc.in
@@ -0,0 +1,3 @@
+#!/bin/sh
+
+exec @CC_BASE@ @EXTRA_ARCH_OPTS@ "$@"
--- a/toolchain/gcc/final/Makefile
+++ b/toolchain/gcc/final/Makefile
@@ -0,0 +1,87 @@
+GCC_VARIANT:=final
+
+include ../common.mk
+
+GCC_CONFIGURE += \
+	--with-headers=$(TOOLCHAIN_DIR)/include \
+	--disable-libsanitizer \
+	--enable-languages=$(TARGET_LANGUAGES) \
+	--enable-shared \
+	--enable-threads \
+	--with-slibdir=$(TOOLCHAIN_DIR)/lib \
+	--enable-lto \
+	--with-libelf=$(TOPDIR)/staging_dir/host
+
+ifdef CONFIG_USE_MUSL
+  GCC_MAKE += gcc_cv_libc_provides_ssp=yes
+endif
+
+ifneq ($(CONFIG_SJLJ_EXCEPTIONS),)
+  GCC_CONFIGURE += \
+	--enable-sjlj-exceptions
+endif
+
+define CleanupToolchain
+	$(INSTALL_DIR) $(TOOLCHAIN_DIR)/$(REAL_GNU_TARGET_NAME)
+	# Important!  Required for limits.h to be fixed.
+	rm -rf $(TOOLCHAIN_DIR)/$(REAL_GNU_TARGET_NAME)/sys-include
+	ln -sf ../include $(TOOLCHAIN_DIR)/$(REAL_GNU_TARGET_NAME)/sys-include
+	rm -rf $(TOOLCHAIN_DIR)/$(REAL_GNU_TARGET_NAME)/lib
+	ln -sf ../lib $(TOOLCHAIN_DIR)/$(REAL_GNU_TARGET_NAME)/lib
+	$(if $(CONFIG_ARCH_64BIT),ln -sf ../lib64 $(TOOLCHAIN_DIR)/$(REAL_GNU_TARGET_NAME)/lib64)
+endef
+
+define Host/Configure
+	$(CleanupToolchain)
+	mkdir -p $(GCC_BUILD_DIR)
+	(cd $(GCC_BUILD_DIR) && rm -f config.cache; \
+		$(GCC_CONFIGURE) \
+	);
+endef
+
+ifeq ($(CONFIG_USE_GLIBC)$(CONFIG_INSTALL_GCCGO),yy)
+define FixGogccCrt
+	# link crtX.o for gotools
+	mkdir -p $(GCC_BUILD_DIR)/gotools
+	$(foreach crt, i 1 n, ln -sf ../../glibc-dev/lib/crt$(crt).o $(GCC_BUILD_DIR)/gotools/ ; )
+endef
+endif
+
+define Host/Compile
+	$(FixGogccCrt)
+	+$(GCC_MAKE) $(HOST_JOBS) -C $(GCC_BUILD_DIR) all
+endef
+
+define SetupExtraArch
+	for app in $(TOOLCHAIN_DIR)/bin/$(OPTIMIZE_FOR_CPU)*-{gcc,gcc-*,g++}; do \
+		[ -e $$$$app ] || continue; \
+		old_base=$$$$(basename $$$$app); \
+		new_base=$(call qstrip,$(CONFIG_EXTRA_TARGET_ARCH_NAME))-$$$${old_base##$(OPTIMIZE_FOR_CPU)-}; \
+		sed -e "s/@CC_BASE@/$$$$old_base/" \
+			-e 's/@EXTRA_ARCH_OPTS@/$(call qstrip,$(CONFIG_EXTRA_TARGET_ARCH_OPTS))/' \
+			 ../files/alternate-arch-cc.in > \
+			 $(TOOLCHAIN_DIR)/bin/$$$$new_base; \
+		chmod a+x $(TOOLCHAIN_DIR)/bin/$$$$new_base; \
+	done
+endef
+
+define Host/Install
+	$(CleanupToolchain)
+	+$(GCC_MAKE) $(HOST_JOBS) -C $(GCC_BUILD_DIR) install
+	# Set up the symlinks to enable lying about target name.
+	set -e; \
+	(cd $(TOOLCHAIN_DIR); \
+		ln -sf $(REAL_GNU_TARGET_NAME) $(GNU_TARGET_NAME); \
+		cd bin; \
+		for app in $(REAL_GNU_TARGET_NAME)-* ; do \
+			ln -sf $$$${app} \
+		   	$(GNU_TARGET_NAME)$$$${app##$(REAL_GNU_TARGET_NAME)}; \
+		done; \
+	);
+	$(if $(CONFIG_EXTRA_TARGET_ARCH),$(call SetupExtraArch))
+	$(RM) $(TOOLCHAIN_DIR)/lib/libiberty.a
+	$(SCRIPT_DIR)/patch-specs.sh "$(TOOLCHAIN_DIR)"
+endef
+
+$(eval $(call HostBuild))
+
--- a/toolchain/gcc/initial/Makefile
+++ b/toolchain/gcc/initial/Makefile
@@ -0,0 +1,36 @@
+GCC_VARIANT:=initial
+GCC_PREPARE=$(CONFIG_USE_MUSL)
+
+include ../common.mk
+
+GCC_CONFIGURE += \
+	--with-newlib \
+	--with-sysroot=$(TOOLCHAIN_DIR) \
+	--enable-languages=c \
+	--disable-shared \
+	--disable-threads \
+
+define Host/Compile
+	+$(GCC_MAKE) $(HOST_JOBS) -C $(GCC_BUILD_DIR) \
+		all-build-libiberty \
+		all-gcc \
+		all-target-libgcc
+endef
+
+define Host/Install
+	+$(GCC_MAKE) $(HOST_JOBS) -C $(GCC_BUILD_DIR) \
+		prefix="$(TOOLCHAIN_DIR)/initial" \
+		install-gcc \
+		install-target-libgcc
+
+	# XXX: glibc insists on linking against libgcc_eh
+	( cd $(TOOLCHAIN_DIR)/initial/lib/gcc/$(REAL_GNU_TARGET_NAME)/$(PKG_VERSION) ; \
+		[ -e libgcc_eh.a ] || ln -sf libgcc.a libgcc_eh.a ; \
+		cp libgcc.a libgcc_initial.a; \
+	)
+
+	$(call FixupLibdir,$(TOOLCHAIN_DIR)/initial)
+	$$(call file_copy,$(TOOLCHAIN_DIR)/initial/.,$(TOOLCHAIN_DIR)/)
+endef
+
+$(eval $(call HostBuild))
--- a/toolchain/gcc/minimal/Makefile
+++ b/toolchain/gcc/minimal/Makefile
@@ -0,0 +1,29 @@
+GCC_VARIANT:=minimal
+GCC_PREPARE=$(if $(CONFIG_USE_MUSL),,1)
+
+include ../common.mk
+
+GCC_CONFIGURE += \
+	--with-newlib \
+	--without-headers \
+	--enable-languages=c \
+	--disable-libsanitizer \
+	--disable-libssp \
+	--disable-shared \
+	--disable-threads
+
+define Host/Compile
+	+$(GCC_MAKE) $(HOST_JOBS) -C $(GCC_BUILD_DIR) all-gcc all-target-libgcc
+endef
+
+define Host/Install
+	$(GCC_MAKE) -C $(GCC_BUILD_DIR) install-gcc install-target-libgcc
+endef
+
+define Host/Clean
+	rm -rf \
+		$(HOST_BUILD_DIR) \
+		$(GCC_BUILD_DIR)
+endef
+
+$(eval $(call HostBuild))
--- a/toolchain/gcc/patches/5.5.0/001-revert_register_mode_search.patch
+++ b/toolchain/gcc/patches/5.5.0/001-revert_register_mode_search.patch
@@ -0,0 +1,65 @@
+Revert of:
+
+commit 275035b56823b26d5fb7e90fad945b998648edf2
+Author: bergner <bergner@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date:   Thu Sep 5 14:09:07 2013 +0000
+
+        PR target/58139
+        * reginfo.c (choose_hard_reg_mode): Scan through all mode classes
+        looking for widest mode.
+
+
+    git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@202286 138bc75d-0d04-0410-961f-82ee72b054a4
+
+
+--- a/gcc/reginfo.c
+++ b/gcc/reginfo.c
+@@ -665,35 +665,40 @@ choose_hard_reg_mode (unsigned int regno
+        mode = GET_MODE_WIDER_MODE (mode))
+     if ((unsigned) hard_regno_nregs[regno][mode] == nregs
+ 	&& HARD_REGNO_MODE_OK (regno, mode)
+-	&& (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode))
+-	&& GET_MODE_SIZE (mode) > GET_MODE_SIZE (found_mode))
+	&& (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode)))
+       found_mode = mode;
+ 
+  if (found_mode != VOIDmode)
+    return found_mode;
+
+   for (mode = GET_CLASS_NARROWEST_MODE (MODE_FLOAT);
+        mode != VOIDmode;
+        mode = GET_MODE_WIDER_MODE (mode))
+     if ((unsigned) hard_regno_nregs[regno][mode] == nregs
+ 	&& HARD_REGNO_MODE_OK (regno, mode)
+-	&& (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode))
+-	&& GET_MODE_SIZE (mode) > GET_MODE_SIZE (found_mode))
+	&& (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode)))
+       found_mode = mode;
+ 
+  if (found_mode != VOIDmode)
+    return found_mode;
+
+   for (mode = GET_CLASS_NARROWEST_MODE (MODE_VECTOR_FLOAT);
+        mode != VOIDmode;
+        mode = GET_MODE_WIDER_MODE (mode))
+     if ((unsigned) hard_regno_nregs[regno][mode] == nregs
+ 	&& HARD_REGNO_MODE_OK (regno, mode)
+-	&& (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode))
+-	&& GET_MODE_SIZE (mode) > GET_MODE_SIZE (found_mode))
+	&& (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode)))
+       found_mode = mode;
+ 
+  if (found_mode != VOIDmode)
+    return found_mode;
+
+   for (mode = GET_CLASS_NARROWEST_MODE (MODE_VECTOR_INT);
+        mode != VOIDmode;
+        mode = GET_MODE_WIDER_MODE (mode))
+     if ((unsigned) hard_regno_nregs[regno][mode] == nregs
+ 	&& HARD_REGNO_MODE_OK (regno, mode)
+-	&& (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode))
+-	&& GET_MODE_SIZE (mode) > GET_MODE_SIZE (found_mode))
+	&& (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode)))
+       found_mode = mode;
+ 
+   if (found_mode != VOIDmode)
--- a/toolchain/gcc/patches/5.5.0/002-case_insensitive.patch
+++ b/toolchain/gcc/patches/5.5.0/002-case_insensitive.patch
@@ -0,0 +1,14 @@
+--- a/include/filenames.h
+++ b/include/filenames.h
+@@ -43,11 +43,6 @@ extern "C" {
+ #  define IS_DIR_SEPARATOR(c) IS_DOS_DIR_SEPARATOR (c)
+ #  define IS_ABSOLUTE_PATH(f) IS_DOS_ABSOLUTE_PATH (f)
+ #else /* not DOSish */
+-#  if defined(__APPLE__)
+-#    ifndef HAVE_CASE_INSENSITIVE_FILE_SYSTEM
+-#      define HAVE_CASE_INSENSITIVE_FILE_SYSTEM 1
+-#    endif
+-#  endif /* __APPLE__ */
+ #  define HAS_DRIVE_SPEC(f) (0)
+ #  define IS_DIR_SEPARATOR(c) IS_UNIX_DIR_SEPARATOR (c)
+ #  define IS_ABSOLUTE_PATH(f) IS_UNIX_ABSOLUTE_PATH (f)
--- a/toolchain/gcc/patches/5.5.0/010-documentation.patch
+++ b/toolchain/gcc/patches/5.5.0/010-documentation.patch
@@ -0,0 +1,23 @@
+--- a/gcc/Makefile.in
+++ b/gcc/Makefile.in
+@@ -2943,18 +2943,10 @@ doc/gcc.info: $(TEXI_GCC_FILES)
+ doc/gccint.info: $(TEXI_GCCINT_FILES)
+ doc/cppinternals.info: $(TEXI_CPPINT_FILES)
+ 
+-doc/%.info: %.texi
+-	if [ x$(BUILD_INFO) = xinfo ]; then \
+-		$(MAKEINFO) $(MAKEINFOFLAGS) -I . -I $(gcc_docdir) \
+-			-I $(gcc_docdir)/include -o $@ $<; \
+-	fi
+doc/%.info:
+ 
+ # Duplicate entry to handle renaming of gccinstall.info
+-doc/gccinstall.info: $(TEXI_GCCINSTALL_FILES)
+-	if [ x$(BUILD_INFO) = xinfo ]; then \
+-		$(MAKEINFO) $(MAKEINFOFLAGS) -I $(gcc_docdir) \
+-			-I $(gcc_docdir)/include -o $@ $<; \
+-	fi
+doc/gccinstall.info:
+ 
+ doc/cpp.dvi: $(TEXI_CPP_FILES)
+ doc/gcc.dvi: $(TEXI_GCC_FILES)
--- a/toolchain/gcc/patches/5.5.0/020-no-plt-backport.patch
+++ b/toolchain/gcc/patches/5.5.0/020-no-plt-backport.patch
@@ -0,0 +1,28 @@
+--- a/gcc/calls.c
+++ b/gcc/calls.c
+@@ -225,6 +225,12 @@ prepare_call_address (tree fndecl_or_typ
+ 	       && targetm.small_register_classes_for_mode_p (FUNCTION_MODE))
+ 	      ? force_not_mem (memory_address (FUNCTION_MODE, funexp))
+ 	      : memory_address (FUNCTION_MODE, funexp));
+  else if (flag_pic && !flag_plt && fndecl_or_type
+	   && TREE_CODE (fndecl_or_type) == FUNCTION_DECL
+	   && !targetm.binds_local_p (fndecl_or_type))
+    {
+      funexp = force_reg (Pmode, funexp);
+    }
+   else if (! sibcallp)
+     {
+ #ifndef NO_FUNCTION_CSE
+--- a/gcc/common.opt
+++ b/gcc/common.opt
+@@ -1779,6 +1779,10 @@ fpie
+ Common Report Var(flag_pie,1) Negative(fPIC)
+ Generate position-independent code for executables if possible (small mode)
+ 
+fplt
+Common Report Var(flag_plt) Init(1)
+Use PLT for PIC calls (-fno-plt: load the address from GOT at call site)
+
+ fplugin=
+ Common Joined RejectNegative Var(common_deferred_options) Defer
+ Specify a plugin to load
--- a/toolchain/gcc/patches/5.5.0/040-fix-mips-ICE-PR-68400.patch
+++ b/toolchain/gcc/patches/5.5.0/040-fix-mips-ICE-PR-68400.patch
@@ -0,0 +1,23 @@
+--- a/gcc/config/mips/mips.c
+++ b/gcc/config/mips/mips.c
+@@ -8001,9 +8001,17 @@ mask_low_and_shift_p (machine_mode mode,
+ bool
+ and_operands_ok (machine_mode mode, rtx op1, rtx op2)
+ {
+-  return (memory_operand (op1, mode)
+-	  ? and_load_operand (op2, mode)
+-	  : and_reg_operand (op2, mode));
+  if (!memory_operand (op1, mode))
+    return and_reg_operand (op2, mode);
+
+  if (!and_load_operand (op2, mode))
+    return false;
+
+  if (!TARGET_MIPS16 || si_mask_operand(op2, mode))
+    return true;
+
+  op1 = XEXP (op1, 0);
+  return !(REG_P (op1) && REGNO (op1) == STACK_POINTER_REGNUM);
+ }
+ 
+ /* The canonical form of a mask-low-and-shift-left operation is
--- a/toolchain/gcc/patches/5.5.0/050-libitm-Don-t-redefine-__always_inline-in-local_atomi.patch
+++ b/toolchain/gcc/patches/5.5.0/050-libitm-Don-t-redefine-__always_inline-in-local_atomi.patch
--- a/toolchain/gcc/patches/5.5.0/200-musl_config.patch
+++ b/toolchain/gcc/patches/5.5.0/200-musl_config.patch
@@ -0,0 +1,309 @@
+From: ktkachov <ktkachov@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Fri, 8 May 2015 08:25:47 +0000 (+0000)
+Subject: [PATCH 2/13] musl libc config
+X-Git-Url: https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff_plain;h=a9173ceabaf29c16f8ef226fbf98af373a4b2ceb
+
+[PATCH 2/13] musl libc config
+
+2015-05-08  Gregor Richards  <gregor.richards@uwaterloo.ca>
+	    Szabolcs Nagy  <szabolcs.nagy@arm.com>
+
+	* config.gcc (LIBC_MUSL): New tm_defines macro.
+	* config/linux.h (OPTION_MUSL): Define.
+	(MUSL_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER32,)
+	(MUSL_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKERX32,)
+	(INCLUDE_DEFAULTS_MUSL_GPP, INCLUDE_DEFAULTS_MUSL_LOCAL,)
+	(INCLUDE_DEFAULTS_MUSL_PREFIX, INCLUDE_DEFAULTS_MUSL_CROSS,)
+	(INCLUDE_DEFAULTS_MUSL_TOOL, INCLUDE_DEFAULTS_MUSL_NATIVE): Define.
+	* config/linux.opt (mmusl): New option.
+	* doc/invoke.texi (GNU/Linux Options): Document -mmusl.
+	* configure.ac (gcc_cv_libc_provides_ssp): Add *-*-musl*.
+	(gcc_cv_target_dl_iterate_phdr): Add *-linux-musl*.
+	* configure: Regenerate.
+
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@222904 138bc75d-0d04-0410-961f-82ee72b054a4
+---
+
+--- a/gcc/config.gcc
+++ b/gcc/config.gcc
+@@ -575,7 +575,7 @@ case ${target} in
+ esac
+ 
+ # Common C libraries.
+-tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3"
+tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3 LIBC_MUSL=4"
+ 
+ # 32-bit x86 processors supported by --with-arch=.  Each processor
+ # MUST be separated by exactly one space.
+@@ -720,6 +720,9 @@ case ${target} in
+     *-*-*uclibc*)
+       tm_defines="$tm_defines DEFAULT_LIBC=LIBC_UCLIBC"
+       ;;
+    *-*-*musl*)
+      tm_defines="$tm_defines DEFAULT_LIBC=LIBC_MUSL"
+      ;;
+     *)
+       tm_defines="$tm_defines DEFAULT_LIBC=LIBC_GLIBC"
+       ;;
+--- a/gcc/config/linux.h
+++ b/gcc/config/linux.h
+@@ -32,10 +32,12 @@ see the files COPYING3 and COPYING.RUNTI
+ #define OPTION_GLIBC  (DEFAULT_LIBC == LIBC_GLIBC)
+ #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
+ #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
+#define OPTION_MUSL   (DEFAULT_LIBC == LIBC_MUSL)
+ #else
+ #define OPTION_GLIBC  (linux_libc == LIBC_GLIBC)
+ #define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
+ #define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
+#define OPTION_MUSL   (linux_libc == LIBC_MUSL)
+ #endif
+ 
+ #define GNU_USER_TARGET_OS_CPP_BUILTINS()			\
+@@ -50,21 +52,25 @@ see the files COPYING3 and COPYING.RUNTI
+     } while (0)
+ 
+ /* Determine which dynamic linker to use depending on whether GLIBC or
+-   uClibc or Bionic is the default C library and whether
+-   -muclibc or -mglibc or -mbionic has been passed to change the default.  */
+   uClibc or Bionic or musl is the default C library and whether
+   -muclibc or -mglibc or -mbionic or -mmusl has been passed to change
+   the default.  */
+ 
+-#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LD1, LD2, LD3)	\
+-  "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:" LD1 "}}"
+#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LIBC4, LD1, LD2, LD3, LD4)	\
+  "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:%{" LIBC4 ":" LD4 ";:" LD1 "}}}"
+ 
+ #if DEFAULT_LIBC == LIBC_GLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
+-  CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", G, U, B)
+#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
+  CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", "mmusl", G, U, B, M)
+ #elif DEFAULT_LIBC == LIBC_UCLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
+-  CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", U, G, B)
+#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
+  CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", "mmusl", U, G, B, M)
+ #elif DEFAULT_LIBC == LIBC_BIONIC
+-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
+-  CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", B, G, U)
+#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
+  CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", "mmusl", B, G, U, M)
+#elif DEFAULT_LIBC == LIBC_MUSL
+#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
+  CHOOSE_DYNAMIC_LINKER1 ("mmusl", "mglibc", "muclibc", "mbionic", M, G, U, B)
+ #else
+ #error "Unsupported DEFAULT_LIBC"
+ #endif /* DEFAULT_LIBC */
+@@ -81,24 +87,100 @@ see the files COPYING3 and COPYING.RUNTI
+ #define BIONIC_DYNAMIC_LINKER32 "/system/bin/linker"
+ #define BIONIC_DYNAMIC_LINKER64 "/system/bin/linker64"
+ #define BIONIC_DYNAMIC_LINKERX32 "/system/bin/linkerx32"
+/* Should be redefined for each target that supports musl.  */
+#define MUSL_DYNAMIC_LINKER "/dev/null"
+#define MUSL_DYNAMIC_LINKER32 "/dev/null"
+#define MUSL_DYNAMIC_LINKER64 "/dev/null"
+#define MUSL_DYNAMIC_LINKERX32 "/dev/null"
+ 
+ #define GNU_USER_DYNAMIC_LINKER						\
+   CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER,	\
+-			 BIONIC_DYNAMIC_LINKER)
+			 BIONIC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
+ #define GNU_USER_DYNAMIC_LINKER32					\
+   CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, \
+-			 BIONIC_DYNAMIC_LINKER32)
+			 BIONIC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
+ #define GNU_USER_DYNAMIC_LINKER64					\
+   CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, \
+-			 BIONIC_DYNAMIC_LINKER64)
+			 BIONIC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
+ #define GNU_USER_DYNAMIC_LINKERX32					\
+   CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKERX32, UCLIBC_DYNAMIC_LINKERX32, \
+-			 BIONIC_DYNAMIC_LINKERX32)
+			 BIONIC_DYNAMIC_LINKERX32, MUSL_DYNAMIC_LINKERX32)
+ 
+ /* Whether we have Bionic libc runtime */
+ #undef TARGET_HAS_BIONIC
+ #define TARGET_HAS_BIONIC (OPTION_BIONIC)
+ 
+/* musl avoids problematic includes by rearranging the include directories.
+ * Unfortunately, this is mostly duplicated from cppdefault.c */
+#if DEFAULT_LIBC == LIBC_MUSL
+#define INCLUDE_DEFAULTS_MUSL_GPP			\
+    { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1,		\
+      GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 },		\
+    { GPLUSPLUS_TOOL_INCLUDE_DIR, "G++", 1, 1,		\
+      GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 1 },		\
+    { GPLUSPLUS_BACKWARD_INCLUDE_DIR, "G++", 1, 1,	\
+      GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 },
+
+#ifdef LOCAL_INCLUDE_DIR
+#define INCLUDE_DEFAULTS_MUSL_LOCAL			\
+    { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 2 },		\
+    { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 0 },
+#else
+#define INCLUDE_DEFAULTS_MUSL_LOCAL
+#endif
+
+#ifdef PREFIX_INCLUDE_DIR
+#define INCLUDE_DEFAULTS_MUSL_PREFIX			\
+    { PREFIX_INCLUDE_DIR, 0, 0, 1, 0, 0},
+#else
+#define INCLUDE_DEFAULTS_MUSL_PREFIX
+#endif
+
+#ifdef CROSS_INCLUDE_DIR
+#define INCLUDE_DEFAULTS_MUSL_CROSS			\
+    { CROSS_INCLUDE_DIR, "GCC", 0, 0, 0, 0},
+#else
+#define INCLUDE_DEFAULTS_MUSL_CROSS
+#endif
+
+#ifdef TOOL_INCLUDE_DIR
+#define INCLUDE_DEFAULTS_MUSL_TOOL			\
+    { TOOL_INCLUDE_DIR, "BINUTILS", 0, 1, 0, 0},
+#else
+#define INCLUDE_DEFAULTS_MUSL_TOOL
+#endif
+
+#ifdef NATIVE_SYSTEM_HEADER_DIR
+#define INCLUDE_DEFAULTS_MUSL_NATIVE			\
+    { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 2 },	\
+    { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 0 },
+#else
+#define INCLUDE_DEFAULTS_MUSL_NATIVE
+#endif
+
+#if defined (CROSS_DIRECTORY_STRUCTURE) && !defined (TARGET_SYSTEM_ROOT)
+# undef INCLUDE_DEFAULTS_MUSL_LOCAL
+# define INCLUDE_DEFAULTS_MUSL_LOCAL
+# undef INCLUDE_DEFAULTS_MUSL_NATIVE
+# define INCLUDE_DEFAULTS_MUSL_NATIVE
+#else
+# undef INCLUDE_DEFAULTS_MUSL_CROSS
+# define INCLUDE_DEFAULTS_MUSL_CROSS
+#endif
+
+#undef INCLUDE_DEFAULTS
+#define INCLUDE_DEFAULTS				\
+  {							\
+    INCLUDE_DEFAULTS_MUSL_GPP				\
+    INCLUDE_DEFAULTS_MUSL_PREFIX			\
+    INCLUDE_DEFAULTS_MUSL_CROSS				\
+    INCLUDE_DEFAULTS_MUSL_TOOL				\
+    INCLUDE_DEFAULTS_MUSL_NATIVE			\
+    { GCC_INCLUDE_DIR, "GCC", 0, 1, 0, 0 },		\
+    { 0, 0, 0, 0, 0, 0 }				\
+  }
+#endif
+
+ #if (DEFAULT_LIBC == LIBC_UCLIBC) && defined (SINGLE_LIBC) /* uClinux */
+ /* This is a *uclinux* target.  We don't define below macros to normal linux
+    versions, because doing so would require *uclinux* targets to include
+--- a/gcc/config/linux.opt
+++ b/gcc/config/linux.opt
+@@ -28,5 +28,9 @@ Target Report RejectNegative Var(linux_l
+ Use GNU C library
+ 
+ muclibc
+-Target Report RejectNegative Var(linux_libc,LIBC_UCLIBC) Negative(mbionic)
+Target Report RejectNegative Var(linux_libc,LIBC_UCLIBC) Negative(mmusl)
+ Use uClibc C library
+
+mmusl
+Target Report RejectNegative Var(linux_libc,LIBC_MUSL) Negative(mbionic)
+Use musl C library
+--- a/gcc/configure
+++ b/gcc/configure
+@@ -27833,6 +27833,9 @@ if test "${gcc_cv_libc_provides_ssp+set}
+ else
+   gcc_cv_libc_provides_ssp=no
+     case "$target" in
+       *-*-musl*)
+	 # All versions of musl provide stack protector
+	 gcc_cv_libc_provides_ssp=yes;;
+        *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
+       # glibc 2.4 and later provides __stack_chk_fail and
+       # either __stack_chk_guard, or TLS access to stack guard canary.
+@@ -27865,6 +27868,7 @@ fi
+ 	 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
+ 	 # simply assert that glibc does provide this, which is true for all
+ 	 # realistically usable GNU/Hurd configurations.
+	 # All supported versions of musl provide it as well
+ 	 gcc_cv_libc_provides_ssp=yes;;
+        *-*-darwin* | *-*-freebsd*)
+ 	 ac_fn_c_check_func "$LINENO" "__stack_chk_fail" "ac_cv_func___stack_chk_fail"
+@@ -27961,6 +27965,9 @@ case "$target" in
+       gcc_cv_target_dl_iterate_phdr=no
+     fi
+     ;;
+  *-linux-musl*)
+    gcc_cv_target_dl_iterate_phdr=yes
+    ;;
+ esac
+ 
+ if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
+--- a/gcc/configure.ac
+++ b/gcc/configure.ac
+@@ -5287,6 +5287,9 @@ AC_CACHE_CHECK(__stack_chk_fail in targe
+       gcc_cv_libc_provides_ssp,
+       [gcc_cv_libc_provides_ssp=no
+     case "$target" in
+       *-*-musl*)
+	 # All versions of musl provide stack protector
+	 gcc_cv_libc_provides_ssp=yes;;
+        *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
+       # glibc 2.4 and later provides __stack_chk_fail and
+       # either __stack_chk_guard, or TLS access to stack guard canary.
+@@ -5313,6 +5316,7 @@ AC_CACHE_CHECK(__stack_chk_fail in targe
+ 	 # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
+ 	 # simply assert that glibc does provide this, which is true for all
+ 	 # realistically usable GNU/Hurd configurations.
+	 # All supported versions of musl provide it as well
+ 	 gcc_cv_libc_provides_ssp=yes;;
+        *-*-darwin* | *-*-freebsd*)
+ 	 AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
+@@ -5386,6 +5390,9 @@ case "$target" in
+       gcc_cv_target_dl_iterate_phdr=no
+     fi
+     ;;
+  *-linux-musl*)
+    gcc_cv_target_dl_iterate_phdr=yes
+    ;;
+ esac
+ GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
+ if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
+--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
+@@ -668,7 +668,7 @@ Objective-C and Objective-C++ Dialects}.
+ -mcpu=@var{cpu}}
+ 
+ @emph{GNU/Linux Options}
+-@gccoptlist{-mglibc -muclibc -mbionic -mandroid @gol
+@gccoptlist{-mglibc -muclibc -mmusl -mbionic -mandroid @gol
+ -tno-android-cc -tno-android-ld}
+ 
+ @emph{H8/300 Options}
+@@ -15351,13 +15351,19 @@ These @samp{-m} options are defined for 
+ @item -mglibc
+ @opindex mglibc
+ Use the GNU C library.  This is the default except
+-on @samp{*-*-linux-*uclibc*} and @samp{*-*-linux-*android*} targets.
+on @samp{*-*-linux-*uclibc*}, @samp{*-*-linux-*musl*} and
+@samp{*-*-linux-*android*} targets.
+ 
+ @item -muclibc
+ @opindex muclibc
+ Use uClibc C library.  This is the default on
+ @samp{*-*-linux-*uclibc*} targets.
+ 
+@item -mmusl
+@opindex mmusl
+Use the musl C library.  This is the default on
+@samp{*-*-linux-*musl*} targets.
+
+ @item -mbionic
+ @opindex mbionic
+ Use Bionic C library.  This is the default on
--- a/toolchain/gcc/patches/5.5.0/201-musl_arm.patch
+++ b/toolchain/gcc/patches/5.5.0/201-musl_arm.patch
@@ -0,0 +1,43 @@
+From: ktkachov <ktkachov@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Wed, 27 May 2015 13:17:11 +0000 (+0000)
+Subject: [PATCH 4/13] arm musl support
+X-Git-Url: https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff_plain;h=de799bd087ab9a179768fea75bd195a31d3432a4
+
+[PATCH 4/13] arm musl support
+
+On behalf of szabolcs.nagy@arm.com
+
+2015-05-27  Gregor Richards  <gregor.richards@uwaterloo.ca>
+
+	* config/arm/linux-eabi.h (MUSL_DYNAMIC_LINKER): Define.
+
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@223749 138bc75d-0d04-0410-961f-82ee72b054a4
+---
+
+--- a/gcc/config/arm/linux-eabi.h
+++ b/gcc/config/arm/linux-eabi.h
+@@ -77,6 +77,23 @@
+     %{mfloat-abi=soft*:" GLIBC_DYNAMIC_LINKER_SOFT_FLOAT "} \
+     %{!mfloat-abi=*:" GLIBC_DYNAMIC_LINKER_DEFAULT "}"
+ 
+/* For ARM musl currently supports four dynamic linkers:
+   - ld-musl-arm.so.1 - for the EABI-derived soft-float ABI
+   - ld-musl-armhf.so.1 - for the EABI-derived hard-float ABI
+   - ld-musl-armeb.so.1 - for the EABI-derived soft-float ABI, EB
+   - ld-musl-armebhf.so.1 - for the EABI-derived hard-float ABI, EB
+   musl does not support the legacy OABI mode.
+   All the dynamic linkers live in /lib.
+   We default to soft-float, EL. */
+#undef  MUSL_DYNAMIC_LINKER
+#if TARGET_BIG_ENDIAN_DEFAULT
+#define MUSL_DYNAMIC_LINKER_E "%{mlittle-endian:;:eb}"
+#else
+#define MUSL_DYNAMIC_LINKER_E "%{mbig-endian:eb}"
+#endif
+#define MUSL_DYNAMIC_LINKER \
+  "/lib/ld-musl-arm" MUSL_DYNAMIC_LINKER_E "%{mfloat-abi=hard:hf}.so.1"
+
+ /* At this point, bpabi.h will have clobbered LINK_SPEC.  We want to
+    use the GNU/Linux version, not the generic BPABI version.  */
+ #undef  LINK_SPEC
--- a/toolchain/gcc/patches/5.5.0/202-musl_mips.patch
+++ b/toolchain/gcc/patches/5.5.0/202-musl_mips.patch
@@ -0,0 +1,35 @@
+From: ktkachov <ktkachov@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Fri, 8 May 2015 15:16:50 +0000 (+0000)
+Subject: [PATCH 6/13] mips musl support
+X-Git-Url: https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff_plain;h=2550b6a866c887472b587bef87d433c51cf1ebc8
+
+[PATCH 6/13] mips musl support
+
+2015-05-08  Gregor Richards  <gregor.richards@uwaterloo.ca>
+	    Szabolcs Nagy  <szabolcs.nagy@arm.com>
+
+	* config/mips/linux.h (MUSL_DYNAMIC_LINKER32): Define.
+	(MUSL_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKERN32): Define.
+	(GNU_USER_DYNAMIC_LINKERN32): Update.
+
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@222915 138bc75d-0d04-0410-961f-82ee72b054a4
+---
+
+--- a/gcc/config/mips/linux.h
+++ b/gcc/config/mips/linux.h
+@@ -37,7 +37,13 @@ along with GCC; see the file COPYING3.
+ #define UCLIBC_DYNAMIC_LINKERN32 \
+   "%{mnan=2008:/lib32/ld-uClibc-mipsn8.so.0;:/lib32/ld-uClibc.so.0}"
+ 
+#undef MUSL_DYNAMIC_LINKER32
+#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-mips%{EL:el}%{msoft-float:-sf}.so.1"
+#undef MUSL_DYNAMIC_LINKER64
+#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-mips64%{EL:el}%{msoft-float:-sf}.so.1"
+#define MUSL_DYNAMIC_LINKERN32 "/lib/ld-musl-mipsn32%{EL:el}%{msoft-float:-sf}.so.1"
+
+ #define BIONIC_DYNAMIC_LINKERN32 "/system/bin/linker32"
+ #define GNU_USER_DYNAMIC_LINKERN32 \
+   CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKERN32, UCLIBC_DYNAMIC_LINKERN32, \
+-                         BIONIC_DYNAMIC_LINKERN32)
+                         BIONIC_DYNAMIC_LINKERN32, MUSL_DYNAMIC_LINKERN32)
--- a/toolchain/gcc/patches/5.5.0/203-musl_powerpc.patch
+++ b/toolchain/gcc/patches/5.5.0/203-musl_powerpc.patch
@@ -0,0 +1,209 @@
+
+gcc/Changelog:
+
+2015-04-24  Gregor Richards  <gregor.richards@uwaterloo.ca>
+	    Szabolcs Nagy  <szabolcs.nagy@arm.com>
+
+	* config.gcc (secure_plt): Add *-linux*-musl*.
+	* config/rs6000/linux64.h (MUSL_DYNAMIC_LINKER32): Define.
+	(MUSL_DYNAMIC_LINKER64): Define.
+	(GNU_USER_DYNAMIC_LINKER32): Update.
+	(GNU_USER_DYNAMIC_LINKER64): Update.
+	(CHOOSE_DYNAMIC_LINKER): Update.
+
+	* config/rs6000/secureplt.h (LINK_SECURE_PLT_DEFAULT_SPEC): Define.
+	* config/rs6000/sysv4.h (GNU_USER_DYNAMIC_LINKER): Update.
+	(MUSL_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER_E,)
+	(INCLUDE_DEFAULTS_MUSL_GPP, INCLUDE_DEFAULTS_MUSL_LOCAL,)
+	(INCLUDE_DEFAULTS_MUSL_PREFIX, INCLUDE_DEFAULTS_MUSL_CROSS,)
+	(INCLUDE_DEFAULTS_MUSL_TOOL, INCLUDE_DEFAULTS_MUSL_NATIVE): Define.
+	(LINK_SECURE_PLT_DEFAULT_SPEC): Define.
+	(CHOOSE_DYNAMIC_LINKER, LINK_TARGET_SPEC, LINK_OS_LINUX_SPEC): Update.
+
+	* config/rs6000/sysv4le.h (MUSL_DYNAMIC_LINKER_E): Define.
+
+--- a/gcc/config/rs6000/linux64.h
+++ b/gcc/config/rs6000/linux64.h
+@@ -365,17 +365,21 @@ extern int dot_symbols;
+ #endif
+ #define UCLIBC_DYNAMIC_LINKER32 "/lib/ld-uClibc.so.0"
+ #define UCLIBC_DYNAMIC_LINKER64 "/lib/ld64-uClibc.so.0"
+#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-powerpc" MUSL_DYNAMIC_LINKER_E ".so.1"
+#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-powerpc64" MUSL_DYNAMIC_LINKER_E ".so.1"
+ #if DEFAULT_LIBC == LIBC_UCLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
+#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
+ #elif DEFAULT_LIBC == LIBC_GLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
+#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
+#elif DEFAULT_LIBC == LIBC_MUSL
+#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
+ #else
+ #error "Unsupported DEFAULT_LIBC"
+ #endif
+ #define GNU_USER_DYNAMIC_LINKER32 \
+-  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32)
+  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
+ #define GNU_USER_DYNAMIC_LINKER64 \
+-  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64)
+  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
+ 
+ #undef  DEFAULT_ASM_ENDIAN
+ #if (TARGET_DEFAULT & MASK_LITTLE_ENDIAN)
+--- a/gcc/config/rs6000/secureplt.h
+++ b/gcc/config/rs6000/secureplt.h
+@@ -18,3 +18,4 @@ along with GCC; see the file COPYING3.  
+ <http://www.gnu.org/licenses/>.  */
+ 
+ #define CC1_SECURE_PLT_DEFAULT_SPEC "-msecure-plt"
+#define LINK_SECURE_PLT_DEFAULT_SPEC "--secure-plt"
+--- a/gcc/config/rs6000/sysv4.h
+++ b/gcc/config/rs6000/sysv4.h
+@@ -537,6 +537,9 @@ ENDIAN_SELECT(" -mbig", " -mlittle", DEF
+ #ifndef CC1_SECURE_PLT_DEFAULT_SPEC
+ #define CC1_SECURE_PLT_DEFAULT_SPEC ""
+ #endif
+#ifndef LINK_SECURE_PLT_DEFAULT_SPEC
+#define LINK_SECURE_PLT_DEFAULT_SPEC ""
+#endif
+ 
+ /* Pass -G xxx to the compiler.  */
+ #undef CC1_SPEC
+@@ -574,7 +577,8 @@ ENDIAN_SELECT(" -mbig", " -mlittle", DEF
+ %{R*} \
+ %(link_shlib) \
+ %{!T*: %(link_start) } \
+-%(link_os)"
+%(link_os)" \
+"%{!mbss-plt: %{!msecure-plt: %(link_secure_plt_default)}}"
+ 
+ /* Shared libraries are not default.  */
+ #define LINK_SHLIB_SPEC "\
+@@ -757,17 +761,22 @@ ENDIAN_SELECT(" -mbig", " -mlittle", DEF
+ 
+ #define LINK_START_LINUX_SPEC ""
+ 
+#define MUSL_DYNAMIC_LINKER_E ENDIAN_SELECT("","le","")
+
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
+ #define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0"
+#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-powerpc" MUSL_DYNAMIC_LINKER_E ".so.1"
+ #if DEFAULT_LIBC == LIBC_UCLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
+#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
+#elif DEFAULT_LIBC == LIBC_MUSL
+#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
+ #elif !defined (DEFAULT_LIBC) || DEFAULT_LIBC == LIBC_GLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
+#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
+ #else
+ #error "Unsupported DEFAULT_LIBC"
+ #endif
+ #define GNU_USER_DYNAMIC_LINKER \
+-  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER)
+  CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
+ 
+ #define LINK_OS_LINUX_SPEC "-m elf32ppclinux %{!shared: %{!static: \
+   %{rdynamic:-export-dynamic} \
+@@ -889,6 +898,7 @@ ncrtn.o%s"
+   { "link_os_openbsd",		LINK_OS_OPENBSD_SPEC },			\
+   { "link_os_default",		LINK_OS_DEFAULT_SPEC },			\
+   { "cc1_secure_plt_default",	CC1_SECURE_PLT_DEFAULT_SPEC },		\
+  { "link_secure_plt_default",	LINK_SECURE_PLT_DEFAULT_SPEC },		\
+   { "cpp_os_ads",		CPP_OS_ADS_SPEC },			\
+   { "cpp_os_yellowknife",	CPP_OS_YELLOWKNIFE_SPEC },		\
+   { "cpp_os_mvme",		CPP_OS_MVME_SPEC },			\
+@@ -943,3 +953,72 @@ ncrtn.o%s"
+ /* This target uses the sysv4.opt file.  */
+ #define TARGET_USES_SYSV4_OPT 1
+ 
+/* Include order changes for musl, same as in generic linux.h.  */
+#if DEFAULT_LIBC == LIBC_MUSL
+#define INCLUDE_DEFAULTS_MUSL_GPP			\
+    { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1,		\
+      GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 },		\
+    { GPLUSPLUS_TOOL_INCLUDE_DIR, "G++", 1, 1,		\
+      GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 1 },		\
+    { GPLUSPLUS_BACKWARD_INCLUDE_DIR, "G++", 1, 1,	\
+      GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 },
+
+#ifdef LOCAL_INCLUDE_DIR
+#define INCLUDE_DEFAULTS_MUSL_LOCAL			\
+    { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 2 },		\
+    { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 0 },
+#else
+#define INCLUDE_DEFAULTS_MUSL_LOCAL
+#endif
+
+#ifdef PREFIX_INCLUDE_DIR
+#define INCLUDE_DEFAULTS_MUSL_PREFIX			\
+    { PREFIX_INCLUDE_DIR, 0, 0, 1, 0, 0},
+#else
+#define INCLUDE_DEFAULTS_MUSL_PREFIX
+#endif
+
+#ifdef CROSS_INCLUDE_DIR
+#define INCLUDE_DEFAULTS_MUSL_CROSS			\
+    { CROSS_INCLUDE_DIR, "GCC", 0, 0, 0, 0},
+#else
+#define INCLUDE_DEFAULTS_MUSL_CROSS
+#endif
+
+#ifdef TOOL_INCLUDE_DIR
+#define INCLUDE_DEFAULTS_MUSL_TOOL			\
+    { TOOL_INCLUDE_DIR, "BINUTILS", 0, 1, 0, 0},
+#else
+#define INCLUDE_DEFAULTS_MUSL_TOOL
+#endif
+
+#ifdef NATIVE_SYSTEM_HEADER_DIR
+#define INCLUDE_DEFAULTS_MUSL_NATIVE			\
+    { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 2 },	\
+    { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 0 },
+#else
+#define INCLUDE_DEFAULTS_MUSL_NATIVE
+#endif
+
+#if defined (CROSS_DIRECTORY_STRUCTURE) && !defined (TARGET_SYSTEM_ROOT)
+# undef INCLUDE_DEFAULTS_MUSL_LOCAL
+# define INCLUDE_DEFAULTS_MUSL_LOCAL
+# undef INCLUDE_DEFAULTS_MUSL_NATIVE
+# define INCLUDE_DEFAULTS_MUSL_NATIVE
+#else
+# undef INCLUDE_DEFAULTS_MUSL_CROSS
+# define INCLUDE_DEFAULTS_MUSL_CROSS
+#endif
+
+#undef INCLUDE_DEFAULTS
+#define INCLUDE_DEFAULTS				\
+  {							\
+    INCLUDE_DEFAULTS_MUSL_GPP				\
+    INCLUDE_DEFAULTS_MUSL_PREFIX			\
+    INCLUDE_DEFAULTS_MUSL_CROSS				\
+    INCLUDE_DEFAULTS_MUSL_TOOL				\
+    INCLUDE_DEFAULTS_MUSL_NATIVE			\
+    { GCC_INCLUDE_DIR, "GCC", 0, 1, 0, 0 },		\
+    { 0, 0, 0, 0, 0, 0 }				\
+  }
+#endif
+--- a/gcc/config/rs6000/sysv4le.h
+++ b/gcc/config/rs6000/sysv4le.h
+@@ -31,3 +31,5 @@
+ /* Little-endian PowerPC64 Linux uses the ELF v2 ABI by default.  */
+ #define LINUX64_DEFAULT_ABI_ELFv2
+ 
+#undef MUSL_DYNAMIC_LINKER_E
+#define MUSL_DYNAMIC_LINKER_E ENDIAN_SELECT("","le","le")
+--- a/gcc/config.gcc
+++ b/gcc/config.gcc
+@@ -2430,6 +2430,10 @@ powerpc*-*-linux*)
+ 	    powerpc*-*-linux*paired*)
+ 		tm_file="${tm_file} rs6000/750cl.h" ;;
+ 	esac
+	case ${target} in
+		*-linux*-musl*)
+			enable_secureplt=yes ;;
+	esac
+ 	if test x${enable_secureplt} = xyes; then
+ 		tm_file="rs6000/secureplt.h ${tm_file}"
+ 	fi
--- a/toolchain/gcc/patches/5.5.0/204-musl_sh.patch
+++ b/toolchain/gcc/patches/5.5.0/204-musl_sh.patch
@@ -0,0 +1,39 @@
+gcc/Changelog:
+
+2015-04-27  Gregor Richards  <gregor.richards@uwaterloo.ca>
+	    Szabolcs Nagy  <szabolcs.nagy@arm.com>
+
+	* config/sh/linux.h (MUSL_DYNAMIC_LINKER): Define.
+	(MUSL_DYNAMIC_LINKER_E, MUSL_DYNAMIC_LINKER_FP): Define.
+
+--- a/gcc/config/sh/linux.h
+++ b/gcc/config/sh/linux.h
+@@ -43,6 +43,28 @@ along with GCC; see the file COPYING3.
+ 
+ #define TARGET_ASM_FILE_END file_end_indicate_exec_stack
+ 
+#if TARGET_ENDIAN_DEFAULT == MASK_LITTLE_ENDIAN
+#define MUSL_DYNAMIC_LINKER_E "%{mb:eb}"
+#else
+#define MUSL_DYNAMIC_LINKER_E "%{!ml:eb}"
+#endif
+
+#if TARGET_CPU_DEFAULT & ( MASK_HARD_SH2A_DOUBLE | MASK_SH4 )
+/* "-nofpu" if any nofpu option is specified */
+#define MUSL_DYNAMIC_LINKER_FP \
+  "%{m1|m2|m2a-nofpu|m3|m4-nofpu|m4-100-nofpu|m4-200-nofpu|m4-300-nofpu|" \
+  "m4-340|m4-400|m4-500|m4al|m5-32media-nofpu|m5-64media-nofpu|" \
+  "m5-compact-nofpu:-nofpu}"
+#else
+/* "-nofpu" if none of the hard fpu options are specified */
+#define MUSL_DYNAMIC_LINKER_FP \
+  "%{m2a|m4|m4-100|m4-200|m4-300|m4a|m5-32media|m5-64media|m5-compact:;:-nofpu}"
+#endif
+
+#undef MUSL_DYNAMIC_LINKER
+#define MUSL_DYNAMIC_LINKER \
+  "/lib/ld-musl-sh" MUSL_DYNAMIC_LINKER_E MUSL_DYNAMIC_LINKER_FP ".so.1"
+
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
+ 
+ #undef SUBTARGET_LINK_EMUL_SUFFIX
--- a/toolchain/gcc/patches/5.5.0/205-musl_x86.patch
+++ b/toolchain/gcc/patches/5.5.0/205-musl_x86.patch
@@ -0,0 +1,41 @@
+From: ktkachov <ktkachov@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Fri, 15 May 2015 13:20:01 +0000 (+0000)
+Subject: [PATCH 9/13] x86 musl support
+X-Git-Url: https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff_plain;h=5551c8d927c17f60837f15f8dfe46f945ba3fa9c
+
+[PATCH 9/13] x86 musl support
+
+On behalf of Szabolcs Nagy.
+
+2015-05-15  Gregor Richards  <gregor.richards@uwaterloo.ca>
+
+	* config/i386/linux.h (MUSL_DYNAMIC_LINKER): Define.
+	* config/i386/linux64.h (MUSL_DYNAMIC_LINKER32): Define.
+	(MUSL_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKERX32): Define.
+
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@223218 138bc75d-0d04-0410-961f-82ee72b054a4
+---
+
+--- a/gcc/config/i386/linux.h
+++ b/gcc/config/i386/linux.h
+@@ -21,3 +21,6 @@ along with GCC; see the file COPYING3.
+ 
+ #define GNU_USER_LINK_EMULATION "elf_i386"
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
+
+#undef MUSL_DYNAMIC_LINKER
+#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-i386.so.1"
+--- a/gcc/config/i386/linux64.h
+++ b/gcc/config/i386/linux64.h
+@@ -30,3 +30,10 @@ see the files COPYING3 and COPYING.RUNTI
+ #define GLIBC_DYNAMIC_LINKER32 "/lib/ld-linux.so.2"
+ #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld-linux-x86-64.so.2"
+ #define GLIBC_DYNAMIC_LINKERX32 "/libx32/ld-linux-x32.so.2"
+
+#undef MUSL_DYNAMIC_LINKER32
+#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-i386.so.1"
+#undef MUSL_DYNAMIC_LINKER64
+#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-x86_64.so.1"
+#undef MUSL_DYNAMIC_LINKERX32
+#define MUSL_DYNAMIC_LINKERX32 "/lib/ld-musl-x32.so.1"
--- a/toolchain/gcc/patches/5.5.0/206-musl_aarch64.patch
+++ b/toolchain/gcc/patches/5.5.0/206-musl_aarch64.patch
@@ -0,0 +1,31 @@
+From: jgreenhalgh <jgreenhalgh@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Wed, 27 May 2015 16:46:39 +0000 (+0000)
+Subject: [PATCH 3/13] aarch64 musl support
+X-Git-Url: https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff_plain;h=b3ff21cf0531be91bc3fb8200296a7633090ec78
+
+[PATCH 3/13] aarch64 musl support
+
+gcc/Changelog:
+
+2015-05-27  Gregor Richards  <gregor.richards@uwaterloo.ca>
+	    Szabolcs Nagy  <szabolcs.nagy@arm.com>
+
+	* config/aarch64/aarch64-linux.h (MUSL_DYNAMIC_LINKER): Define.
+
+
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@223766 138bc75d-0d04-0410-961f-82ee72b054a4
+---
+
+--- a/gcc/config/aarch64/aarch64-linux.h
+++ b/gcc/config/aarch64/aarch64-linux.h
+@@ -23,6 +23,9 @@
+ 
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux-aarch64%{mbig-endian:_be}%{mabi=ilp32:_ilp32}.so.1"
+ 
+#undef MUSL_DYNAMIC_LINKER
+#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-aarch64%{mbig-endian:_be}%{mabi=ilp32:_ilp32}.so.1"
+
+ #undef  ASAN_CC1_SPEC
+ #define ASAN_CC1_SPEC "%{%:sanitize(address):-funwind-tables}"
+ 
--- a/toolchain/gcc/patches/5.5.0/207-musl_fixincludes.patch
+++ b/toolchain/gcc/patches/5.5.0/207-musl_fixincludes.patch
@@ -0,0 +1,30 @@
+From: ktkachov <ktkachov@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Wed, 22 Apr 2015 14:18:16 +0000 (+0000)
+Subject: fixincludes update for musl support
+X-Git-Url: https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff_plain;h=2dc727de2e87c2756a514cbb43cea23c99deaa3d
+
+fixincludes update for musl support
+
+On behalf of Szabolcs.Nagy@arm.com
+
+2015-04-22  Gregor Richards  <gregor.richards@uwaterloo.ca>
+
+	* mkfixinc.sh: Add *-musl* with no fixes.
+
+
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@222327 138bc75d-0d04-0410-961f-82ee72b054a4
+---
+
+--- a/fixincludes/mkfixinc.sh
+++ b/fixincludes/mkfixinc.sh
+@@ -19,7 +19,8 @@ case $machine in
+     powerpc-*-eabi*    | \
+     powerpc-*-rtems*   | \
+     powerpcle-*-eabisim* | \
+-    powerpcle-*-eabi* )
+    powerpcle-*-eabi* | \
+    *-musl* )
+ 	#  IF there is no include fixing,
+ 	#  THEN create a no-op fixer and exit
+ 	(echo "#! /bin/sh" ; echo "exit 0" ) > ${target}
--- a/toolchain/gcc/patches/5.5.0/209-musl_libstdc++.patch
+++ b/toolchain/gcc/patches/5.5.0/209-musl_libstdc++.patch
@@ -0,0 +1,72 @@
+From: ktkachov <ktkachov@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Wed, 22 Apr 2015 14:24:11 +0000 (+0000)
+Subject: libstdc++, libgfortran gthr workaround for musl
+X-Git-Url: https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff_plain;h=1e5f711c11cb80ce609db9e9c1d8b2da0f7b5b61
+
+libstdc++, libgfortran gthr workaround for musl
+
+On behalf of szabolcs.nagy@arm.com
+
+[libstdc++-v3/]
+2015-04-22  Szabolcs Nagy  <szabolcs.nagy@arm.com>
+
+	* config/os/generic/os_defines.h (_GLIBCXX_GTHREAD_USE_WEAK): Define.
+	* configure.host (os_include_dir): Set to "os/generic" for linux-musl*.
+
+[libgfortran/]
+2015-04-22  Szabolcs Nagy  <szabolcs.nagy@arm.com>
+
+	* acinclude.m4 (GTHREAD_USE_WEAK): Define as 0 for *-*-musl*.
+	* configure: Regenerate.
+
+
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@222329 138bc75d-0d04-0410-961f-82ee72b054a4
+---
+
+--- a/libgfortran/acinclude.m4
+++ b/libgfortran/acinclude.m4
+@@ -100,7 +100,7 @@ void foo (void);
+ 	      [Define to 1 if the target supports #pragma weak])
+   fi
+   case "$host" in
+-    *-*-darwin* | *-*-hpux* | *-*-cygwin* | *-*-mingw* )
+    *-*-darwin* | *-*-hpux* | *-*-cygwin* | *-*-mingw* | *-*-musl* )
+       AC_DEFINE(GTHREAD_USE_WEAK, 0,
+ 		[Define to 0 if the target shouldn't use #pragma weak])
+       ;;
+--- a/libgfortran/configure
+++ b/libgfortran/configure
+@@ -26456,7 +26456,7 @@ $as_echo "#define SUPPORTS_WEAK 1" >>con
+ 
+   fi
+   case "$host" in
+-    *-*-darwin* | *-*-hpux* | *-*-cygwin* | *-*-mingw* )
+    *-*-darwin* | *-*-hpux* | *-*-cygwin* | *-*-mingw* | *-*-musl* )
+ 
+ $as_echo "#define GTHREAD_USE_WEAK 0" >>confdefs.h
+ 
+--- a/libstdc++-v3/config/os/generic/os_defines.h
+++ b/libstdc++-v3/config/os/generic/os_defines.h
+@@ -33,4 +33,9 @@
+ // System-specific #define, typedefs, corrections, etc, go here.  This
+ // file will come before all others.
+ 
+// Disable the weak reference logic in gthr.h for os/generic because it
+// is broken on every platform unless there is implementation specific
+// workaround in gthr-posix.h and at link-time for static linking.
+#define _GLIBCXX_GTHREAD_USE_WEAK 0
+
+ #endif
+--- a/libstdc++-v3/configure.host
+++ b/libstdc++-v3/configure.host
+@@ -273,6 +273,9 @@ case "${host_os}" in
+   freebsd*)
+     os_include_dir="os/bsd/freebsd"
+     ;;
+  linux-musl*)
+    os_include_dir="os/generic"
+    ;;
+   gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu)
+     if [ "$uclibc" = "yes" ]; then
+       os_include_dir="os/uclibc"
--- a/toolchain/gcc/patches/5.5.0/230-musl_libssp.patch
+++ b/toolchain/gcc/patches/5.5.0/230-musl_libssp.patch
@@ -0,0 +1,13 @@
+--- a/gcc/gcc.c
+++ b/gcc/gcc.c
+@@ -727,7 +727,9 @@ proper position among the other output f
+ #endif
+ 
+ #ifndef LINK_SSP_SPEC
+-#ifdef TARGET_LIBC_PROVIDES_SSP
+#if DEFAULT_LIBC == LIBC_MUSL
+#define LINK_SSP_SPEC "-lssp_nonshared"
+#elif defined(TARGET_LIBC_PROVIDES_SSP)
+ #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all" \
+ 		       "|fstack-protector-strong|fstack-protector-explicit:}"
+ #else
--- a/toolchain/gcc/patches/5.5.0/240-musl-libitm-fixes.patch
+++ b/toolchain/gcc/patches/5.5.0/240-musl-libitm-fixes.patch
@@ -0,0 +1,61 @@
+From: ktkachov <ktkachov@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Wed, 22 Apr 2015 14:11:25 +0000 (+0000)
+Subject: libitm fixes for musl support
+X-Git-Url: https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff_plain;h=e53a4d49c3d03ab8eaddb073cf972c1c46d75338
+
+libitm fixes for musl support
+
+On behalf of Szabolcs.Nagy@arm.com
+
+2015-04-22  Gregor Richards  <gregor.richards@uwaterloo.ca>
+
+       * config/arm/hwcap.cc: Use fcntl.h instead of sys/fcntl.h.
+       * config/linux/x86/tls.h: Only use __GLIBC_PREREQ if defined.
+
+
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@222325 138bc75d-0d04-0410-961f-82ee72b054a4
+---
+
+--- a/libitm/config/arm/hwcap.cc
+++ b/libitm/config/arm/hwcap.cc
+@@ -40,7 +40,7 @@ int GTM_hwcap HIDDEN = 0
+ 
+ #ifdef __linux__
+ #include <unistd.h>
+-#include <sys/fcntl.h>
+#include <fcntl.h>
+ #include <elf.h>
+ 
+ static void __attribute__((constructor))
+--- a/libitm/config/linux/x86/tls.h
+++ b/libitm/config/linux/x86/tls.h
+@@ -25,16 +25,19 @@
+ #ifndef LIBITM_X86_TLS_H
+ #define LIBITM_X86_TLS_H 1
+ 
+-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
+#if defined(__GLIBC_PREREQ)
+#if __GLIBC_PREREQ(2, 10)
+ /* Use slots in the TCB head rather than __thread lookups.
+    GLIBC has reserved words 10 through 13 for TM.  */
+ #define HAVE_ARCH_GTM_THREAD 1
+ #define HAVE_ARCH_GTM_THREAD_DISP 1
+ #endif
+#endif
+ 
+ #include "config/generic/tls.h"
+ 
+-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
+#if defined(__GLIBC_PREREQ)
+#if __GLIBC_PREREQ(2, 10)
+ namespace GTM HIDDEN {
+ 
+ #ifdef __x86_64__
+@@ -101,5 +104,6 @@ static inline void set_abi_disp(struct a
+ 
+ } // namespace GTM
+ #endif /* >= GLIBC 2.10 */
+#endif
+ 
+ #endif // LIBITM_X86_TLS_H
--- a/toolchain/gcc/patches/5.5.0/250-add-musl.patch
+++ b/toolchain/gcc/patches/5.5.0/250-add-musl.patch
@@ -0,0 +1,120 @@
+From: ktkachov <ktkachov@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Fri, 8 May 2015 08:30:40 +0000 (+0000)
+Subject: [PATCH 0/13] Add musl support to GCC
+X-Git-Url: https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff_plain;h=f2d678afa5b8385d763b93772d73d6bf80a9739e
+
+[PATCH 0/13] Add musl support to GCC
+
+2015-05-08  Szabolcs Nagy  <szabolcs.nagy@arm.com>
+
+	* config/glibc-stdint.h (OPTION_MUSL): Define.
+	(INT_FAST16_TYPE, INT_FAST32_TYPE, UINT_FAST16_TYPE, UINT_FAST32_TYPE):
+	Change the definition based on OPTION_MUSL for 64 bit targets.
+	* config/linux.h (OPTION_MUSL): Redefine.
+	* config/alpha/linux.h (OPTION_MUSL): Redefine.
+	* config/rs6000/linux.h (OPTION_MUSL): Redefine.
+	* config/rs6000/linux64.h (OPTION_MUSL): Redefine.
+
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@222905 138bc75d-0d04-0410-961f-82ee72b054a4
+---
+
+--- a/gcc/config/alpha/linux.h
+++ b/gcc/config/alpha/linux.h
+@@ -61,10 +61,14 @@ along with GCC; see the file COPYING3.
+ #define OPTION_GLIBC  (DEFAULT_LIBC == LIBC_GLIBC)
+ #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
+ #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
+#undef OPTION_MUSL
+#define OPTION_MUSL   (DEFAULT_LIBC == LIBC_MUSL)
+ #else
+ #define OPTION_GLIBC  (linux_libc == LIBC_GLIBC)
+ #define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
+ #define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
+#undef OPTION_MUSL
+#define OPTION_MUSL   (linux_libc == LIBC_MUSL)
+ #endif
+ 
+ /* Determine what functions are present at the runtime;
+--- a/gcc/config/glibc-stdint.h
+++ b/gcc/config/glibc-stdint.h
+@@ -22,6 +22,12 @@ a copy of the GCC Runtime Library Except
+ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+ <http://www.gnu.org/licenses/>.  */
+ 
+/* Systems using musl libc should use this header and make sure
+   OPTION_MUSL is defined correctly before using the TYPE macros. */
+#ifndef OPTION_MUSL
+#define OPTION_MUSL 0
+#endif
+
+ #define SIG_ATOMIC_TYPE "int"
+ 
+ #define INT8_TYPE "signed char"
+@@ -43,12 +49,12 @@ see the files COPYING3 and COPYING.RUNTI
+ #define UINT_LEAST64_TYPE (LONG_TYPE_SIZE == 64 ? "long unsigned int" : "long long unsigned int")
+ 
+ #define INT_FAST8_TYPE "signed char"
+-#define INT_FAST16_TYPE (LONG_TYPE_SIZE == 64 ? "long int" : "int")
+-#define INT_FAST32_TYPE (LONG_TYPE_SIZE == 64 ? "long int" : "int")
+#define INT_FAST16_TYPE (LONG_TYPE_SIZE == 64 && !OPTION_MUSL ? "long int" : "int")
+#define INT_FAST32_TYPE (LONG_TYPE_SIZE == 64 && !OPTION_MUSL ? "long int" : "int")
+ #define INT_FAST64_TYPE (LONG_TYPE_SIZE == 64 ? "long int" : "long long int")
+ #define UINT_FAST8_TYPE "unsigned char"
+-#define UINT_FAST16_TYPE (LONG_TYPE_SIZE == 64 ? "long unsigned int" : "unsigned int")
+-#define UINT_FAST32_TYPE (LONG_TYPE_SIZE == 64 ? "long unsigned int" : "unsigned int")
+#define UINT_FAST16_TYPE (LONG_TYPE_SIZE == 64 && !OPTION_MUSL ? "long unsigned int" : "unsigned int")
+#define UINT_FAST32_TYPE (LONG_TYPE_SIZE == 64 && !OPTION_MUSL ? "long unsigned int" : "unsigned int")
+ #define UINT_FAST64_TYPE (LONG_TYPE_SIZE == 64 ? "long unsigned int" : "long long unsigned int")
+ 
+ #define INTPTR_TYPE (LONG_TYPE_SIZE == 64 ? "long int" : "int")
+--- a/gcc/config/linux.h
+++ b/gcc/config/linux.h
+@@ -32,11 +32,13 @@ see the files COPYING3 and COPYING.RUNTI
+ #define OPTION_GLIBC  (DEFAULT_LIBC == LIBC_GLIBC)
+ #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
+ #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
+#undef OPTION_MUSL
+ #define OPTION_MUSL   (DEFAULT_LIBC == LIBC_MUSL)
+ #else
+ #define OPTION_GLIBC  (linux_libc == LIBC_GLIBC)
+ #define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
+ #define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
+#undef OPTION_MUSL
+ #define OPTION_MUSL   (linux_libc == LIBC_MUSL)
+ #endif
+ 
+--- a/gcc/config/rs6000/linux.h
+++ b/gcc/config/rs6000/linux.h
+@@ -30,10 +30,14 @@
+ #define OPTION_GLIBC  (DEFAULT_LIBC == LIBC_GLIBC)
+ #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
+ #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
+#undef OPTION_MUSL
+#define OPTION_MUSL   (DEFAULT_LIBC == LIBC_MUSL)
+ #else
+ #define OPTION_GLIBC  (linux_libc == LIBC_GLIBC)
+ #define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
+ #define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
+#undef OPTION_MUSL
+#define OPTION_MUSL   (linux_libc == LIBC_MUSL)
+ #endif
+ 
+ /* Determine what functions are present at the runtime;
+--- a/gcc/config/rs6000/linux64.h
+++ b/gcc/config/rs6000/linux64.h
+@@ -299,10 +299,14 @@ extern int dot_symbols;
+ #define OPTION_GLIBC  (DEFAULT_LIBC == LIBC_GLIBC)
+ #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
+ #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
+#undef OPTION_MUSL
+#define OPTION_MUSL   (DEFAULT_LIBC == LIBC_MUSL)
+ #else
+ #define OPTION_GLIBC  (linux_libc == LIBC_GLIBC)
+ #define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
+ #define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
+#undef OPTION_MUSL
+#define OPTION_MUSL   (linux_libc == LIBC_MUSL)
+ #endif
+ 
+ /* Determine what functions are present at the runtime;
--- a/toolchain/gcc/patches/5.5.0/260-musl-add-unwind-fix.patch
+++ b/toolchain/gcc/patches/5.5.0/260-musl-add-unwind-fix.patch
@@ -0,0 +1,34 @@
+From: ktkachov <ktkachov@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Wed, 22 Apr 2015 14:20:01 +0000 (+0000)
+Subject: unwind fix for musl
+X-Git-Url: https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff_plain;h=a2e31d0681d8a47389b8a3552622fbd9827bcef4
+
+unwind fix for musl
+
+On behalf of szabolcs.nagy@arm.com
+
+2015-04-22  Gregor Richards  <gregor.richards@uwaterloo.ca>
+	    Szabolcs Nagy  <szabolcs.nagy@arm.com>
+
+	* unwind-dw2-fde-dip.c (USE_PT_GNU_EH_FRAME): Define it on
+	Linux if target provides dl_iterate_phdr.
+
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@222328 138bc75d-0d04-0410-961f-82ee72b054a4
+---
+
+--- a/libgcc/unwind-dw2-fde-dip.c
+++ b/libgcc/unwind-dw2-fde-dip.c
+@@ -59,6 +59,12 @@
+ 
+ #if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
+     && defined(TARGET_DL_ITERATE_PHDR) \
+    && defined(__linux__)
+# define USE_PT_GNU_EH_FRAME
+#endif
+
+#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
+    && defined(TARGET_DL_ITERATE_PHDR) \
+     && (defined(__DragonFly__) || defined(__FreeBSD__))
+ # define ElfW __ElfN
+ # define USE_PT_GNU_EH_FRAME
--- a/toolchain/gcc/patches/5.5.0/270-musl-add-powerpc-softfloat-fix.patch
+++ b/toolchain/gcc/patches/5.5.0/270-musl-add-powerpc-softfloat-fix.patch
@@ -0,0 +1,24 @@
+--- a/gcc/config/rs6000/linux64.h
+++ b/gcc/config/rs6000/linux64.h
+@@ -369,8 +369,8 @@ extern int dot_symbols;
+ #endif
+ #define UCLIBC_DYNAMIC_LINKER32 "/lib/ld-uClibc.so.0"
+ #define UCLIBC_DYNAMIC_LINKER64 "/lib/ld64-uClibc.so.0"
+-#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-powerpc" MUSL_DYNAMIC_LINKER_E ".so.1"
+-#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-powerpc64" MUSL_DYNAMIC_LINKER_E ".so.1"
+#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-powerpc" MUSL_DYNAMIC_LINKER_E "%{msoft-float:-sf}.so.1"
+#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-powerpc64" MUSL_DYNAMIC_LINKER_E "%{msoft-float:-sf}.so.1"
+ #if DEFAULT_LIBC == LIBC_UCLIBC
+ #define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
+ #elif DEFAULT_LIBC == LIBC_GLIBC
+--- a/gcc/config/rs6000/sysv4.h
+++ b/gcc/config/rs6000/sysv4.h
+@@ -765,7 +765,7 @@ ENDIAN_SELECT(" -mbig", " -mlittle", DEF
+ 
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
+ #define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0"
+-#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-powerpc" MUSL_DYNAMIC_LINKER_E ".so.1"
+#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-powerpc" MUSL_DYNAMIC_LINKER_E "%{msoft-float:-sf}.so.1"
+ #if DEFAULT_LIBC == LIBC_UCLIBC
+ #define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
+ #elif DEFAULT_LIBC == LIBC_MUSL
--- a/toolchain/gcc/patches/5.5.0/280-musl-disable-ifunc-by-default.patch
+++ b/toolchain/gcc/patches/5.5.0/280-musl-disable-ifunc-by-default.patch
@@ -0,0 +1,36 @@
+From 450fb05e2a7510d37744f044009f8237d902f65c Mon Sep 17 00:00:00 2001
+From: nsz <nsz@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Tue, 30 Aug 2016 10:26:22 +0000
+Subject: [PATCH] disable ifunc on *-musl by default
+
+gcc/
+	* config.gcc (*-*-*musl*): Disable gnu-indirect-function.
+
+
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@239859 138bc75d-0d04-0410-961f-82ee72b054a4
+---
+ gcc/ChangeLog  | 4 ++++
+ gcc/config.gcc | 4 ++--
+ 2 files changed, 6 insertions(+), 2 deletions(-)
+
+--- a/gcc/config.gcc
+++ b/gcc/config.gcc
+@@ -1455,7 +1455,7 @@ i[34567]86-*-linux* | i[34567]86-*-kfree
+ 		extra_options="${extra_options} linux-android.opt"
+ 		# Assume modern glibc if not targeting Android nor uclibc.
+ 		case ${target} in
+-		*-*-*android*|*-*-*uclibc*)
+		*-*-*android*|*-*-*uclibc*|*-*-*musl*)
+ 		  ;;
+ 		*)
+ 		  default_gnu_indirect_function=yes
+@@ -1524,7 +1524,7 @@ x86_64-*-linux* | x86_64-*-kfreebsd*-gnu
+ 		extra_options="${extra_options} linux-android.opt"
+ 		# Assume modern glibc if not targeting Android nor uclibc.
+ 		case ${target} in
+-		*-*-*android*|*-*-*uclibc*)
+		*-*-*android*|*-*-*uclibc*|*-*-*musl*)
+ 		  ;;
+ 		*)
+ 		  default_gnu_indirect_function=yes
--- a/toolchain/gcc/patches/5.5.0/300-mips_Os_cpu_rtx_cost_model.patch
+++ b/toolchain/gcc/patches/5.5.0/300-mips_Os_cpu_rtx_cost_model.patch
@@ -0,0 +1,14 @@
+Use the proper rtx cost model for the selected CPU, even when optimizing
+for size. This generates better code.
+
+--- a/gcc/config/mips/mips.c
+++ b/gcc/config/mips/mips.c
+@@ -17483,7 +17483,7 @@ mips_option_override (void)
+     flag_pcc_struct_return = 0;
+ 
+   /* Decide which rtx_costs structure to use.  */
+-  if (optimize_size)
+  if (0 && optimize_size)
+     mips_cost = &mips_rtx_cost_optimize_size;
+   else
+     mips_cost = &mips_rtx_cost_data[mips_tune];
--- a/toolchain/gcc/patches/5.5.0/800-arm_v5te_no_ldrd_strd.patch
+++ b/toolchain/gcc/patches/5.5.0/800-arm_v5te_no_ldrd_strd.patch
@@ -0,0 +1,11 @@
+--- a/gcc/config/arm/arm.h
+++ b/gcc/config/arm/arm.h
+@@ -285,7 +285,7 @@ extern void (*arm_lang_output_object_att
+ /* Thumb-1 only.  */
+ #define TARGET_THUMB1_ONLY		(TARGET_THUMB1 && !arm_arch_notm)
+ 
+-#define TARGET_LDRD			(arm_arch5e && ARM_DOUBLEWORD_ALIGN \
+#define TARGET_LDRD			(arm_arch6 && ARM_DOUBLEWORD_ALIGN \
+                                          && !TARGET_THUMB1)
+ 
+ #define TARGET_CRC32			(arm_arch_crc)
--- a/toolchain/gcc/patches/5.5.0/810-arm-softfloat-libgcc.patch
+++ b/toolchain/gcc/patches/5.5.0/810-arm-softfloat-libgcc.patch
@@ -0,0 +1,25 @@
+--- a/libgcc/config/arm/t-linux
+++ b/libgcc/config/arm/t-linux
+@@ -1,6 +1,10 @@
+ LIB1ASMSRC = arm/lib1funcs.S
+ LIB1ASMFUNCS = _udivsi3 _divsi3 _umodsi3 _modsi3 _dvmd_lnx _clzsi2 _clzdi2 \
+-	_ctzsi2 _arm_addsubdf3 _arm_addsubsf3
+	_ctzsi2 _arm_addsubdf3 _arm_addsubsf3 \
+	_arm_negdf2 _arm_muldivdf3 _arm_cmpdf2 _arm_unorddf2 \
+	_arm_fixdfsi _arm_fixunsdfsi _arm_truncdfsf2 \
+	_arm_negsf2 _arm_muldivsf3 _arm_cmpsf2 _arm_unordsf2 \
+	_arm_fixsfsi _arm_fixunssfsi
+ 
+ # Just for these, we omit the frame pointer since it makes such a big
+ # difference.
+--- a/gcc/config/arm/linux-elf.h
+++ b/gcc/config/arm/linux-elf.h
+@@ -60,8 +60,6 @@
+    %{shared:-lc} \
+    %{!shared:%{profile:-lc_p}%{!profile:-lc}}"
+ 
+-#define LIBGCC_SPEC "%{mfloat-abi=soft*:-lfloat} -lgcc"
+-
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
+ 
+ #define LINUX_TARGET_LINK_SPEC  "%{h*} \
--- a/toolchain/gcc/patches/5.5.0/820-libgcc_pic.patch
+++ b/toolchain/gcc/patches/5.5.0/820-libgcc_pic.patch
@@ -0,0 +1,36 @@
+--- a/libgcc/Makefile.in
+++ b/libgcc/Makefile.in
+@@ -887,11 +887,12 @@ $(libgcov-driver-objects): %$(objext): $
+ 
+ # Static libraries.
+ libgcc.a: $(libgcc-objects)
+libgcc_pic.a: $(libgcc-s-objects)
+ libgcov.a: $(libgcov-objects)
+ libunwind.a: $(libunwind-objects)
+ libgcc_eh.a: $(libgcc-eh-objects)
+ 
+-libgcc.a libgcov.a libunwind.a libgcc_eh.a:
+libgcc.a libgcov.a libunwind.a libgcc_eh.a libgcc_pic.a:
+ 	-rm -f $@
+ 
+ 	objects="$(objects)";					\
+@@ -913,7 +914,7 @@ libgcc_s$(SHLIB_EXT): libunwind$(SHLIB_E
+ endif
+ 
+ ifeq ($(enable_shared),yes)
+-all: libgcc_eh.a libgcc_s$(SHLIB_EXT)
+all: libgcc_eh.a libgcc_pic.a libgcc_s$(SHLIB_EXT)
+ ifneq ($(LIBUNWIND),)
+ all: libunwind$(SHLIB_EXT)
+ endif
+@@ -1108,6 +1109,10 @@ install-shared:
+ 	chmod 644 $(DESTDIR)$(inst_libdir)/libgcc_eh.a
+ 	$(RANLIB) $(DESTDIR)$(inst_libdir)/libgcc_eh.a
+ 
+	$(INSTALL_DATA) libgcc_pic.a $(mapfile) $(DESTDIR)$(inst_libdir)/
+	chmod 644 $(DESTDIR)$(inst_libdir)/libgcc_pic.a
+	$(RANLIB) $(DESTDIR)$(inst_libdir)/libgcc_pic.a
+
+ 	$(subst @multilib_dir@,$(MULTIDIR),$(subst \
+ 		@shlib_base_name@,libgcc_s,$(subst \
+ 		@shlib_slibdir_qual@,$(MULTIOSSUBDIR),$(SHLIB_INSTALL))))
--- a/toolchain/gcc/patches/5.5.0/830-arm_unbreak_armv4t.patch
+++ b/toolchain/gcc/patches/5.5.0/830-arm_unbreak_armv4t.patch
@@ -0,0 +1,13 @@
+http://sourceware.org/ml/crossgcc/2008-05/msg00009.html
+
+--- a/gcc/config/arm/linux-eabi.h
+++ b/gcc/config/arm/linux-eabi.h
+@@ -45,7 +45,7 @@
+    The ARM10TDMI core is the default for armv5t, so set
+    SUBTARGET_CPU_DEFAULT to achieve this.  */
+ #undef  SUBTARGET_CPU_DEFAULT
+-#define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm10tdmi
+#define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm9tdmi
+ 
+ /* TARGET_BIG_ENDIAN_DEFAULT is set in
+    config.gcc for big endian configurations.  */
--- a/toolchain/gcc/patches/5.5.0/840-armv4_pass_fix-v4bx_to_ld.patch
+++ b/toolchain/gcc/patches/5.5.0/840-armv4_pass_fix-v4bx_to_ld.patch
@@ -0,0 +1,19 @@
+--- a/gcc/config/arm/linux-eabi.h
+++ b/gcc/config/arm/linux-eabi.h
+@@ -94,10 +94,15 @@
+ #define MUSL_DYNAMIC_LINKER \
+   "/lib/ld-musl-arm" MUSL_DYNAMIC_LINKER_E "%{mfloat-abi=hard:hf}.so.1"
+ 
+/* For armv4 we pass --fix-v4bx to linker to support EABI */
+#undef TARGET_FIX_V4BX_SPEC
+#define TARGET_FIX_V4BX_SPEC " %{mcpu=arm8|mcpu=arm810|mcpu=strongarm*"\
+  "|march=armv4|mcpu=fa526|mcpu=fa626:--fix-v4bx}"
+
+ /* At this point, bpabi.h will have clobbered LINK_SPEC.  We want to
+    use the GNU/Linux version, not the generic BPABI version.  */
+ #undef  LINK_SPEC
+-#define LINK_SPEC EABI_LINK_SPEC					\
+#define LINK_SPEC EABI_LINK_SPEC TARGET_FIX_V4BX_SPEC			\
+   LINUX_OR_ANDROID_LD (LINUX_TARGET_LINK_SPEC,				\
+ 		       LINUX_TARGET_LINK_SPEC " " ANDROID_LINK_SPEC)
+ 
--- a/toolchain/gcc/patches/5.5.0/850-use_shared_libgcc.patch
+++ b/toolchain/gcc/patches/5.5.0/850-use_shared_libgcc.patch
@@ -0,0 +1,47 @@
+--- a/gcc/config/arm/linux-eabi.h
+++ b/gcc/config/arm/linux-eabi.h
+@@ -131,10 +131,6 @@
+ #define ENDFILE_SPEC \
+   LINUX_OR_ANDROID_LD (GNU_USER_TARGET_ENDFILE_SPEC, ANDROID_ENDFILE_SPEC)
+ 
+-/* Use the default LIBGCC_SPEC, not the version in linux-elf.h, as we
+-   do not use -lfloat.  */
+-#undef LIBGCC_SPEC
+-
+ /* Clear the instruction cache from `beg' to `end'.  This is
+    implemented in lib1funcs.S, so ensure an error if this definition
+    is used.  */
+--- a/gcc/config/linux.h
+++ b/gcc/config/linux.h
+@@ -53,6 +53,10 @@ see the files COPYING3 and COPYING.RUNTI
+ 	builtin_assert ("system=posix");			\
+     } while (0)
+ 
+#ifndef LIBGCC_SPEC
+#define LIBGCC_SPEC "%{static|static-libgcc:-lgcc}%{!static:%{!static-libgcc:-lgcc_s}}"
+#endif
+
+ /* Determine which dynamic linker to use depending on whether GLIBC or
+    uClibc or Bionic or musl is the default C library and whether
+    -muclibc or -mglibc or -mbionic or -mmusl has been passed to change
+--- a/libgcc/mkmap-symver.awk
+++ b/libgcc/mkmap-symver.awk
+@@ -132,5 +132,5 @@ function output(lib) {
+   else if (inherit[lib])
+     printf("} %s;\n", inherit[lib]);
+   else
+-    printf ("\n  local:\n\t*;\n};\n");
+    printf ("\n\t*;\n};\n");
+ }
+--- a/gcc/config/rs6000/linux.h
+++ b/gcc/config/rs6000/linux.h
+@@ -60,6 +60,9 @@
+ #undef	CPP_OS_DEFAULT_SPEC
+ #define CPP_OS_DEFAULT_SPEC "%(cpp_os_linux)"
+ 
+#undef LIBGCC_SPEC
+#define LIBGCC_SPEC "%{!static:%{!static-libgcc:-lgcc_s}} -lgcc"
+
+ #undef  LINK_SHLIB_SPEC
+ #define LINK_SHLIB_SPEC "%{shared:-shared} %{!shared: %{static:-static}}"
+ 
--- a/toolchain/gcc/patches/5.5.0/851-libgcc_no_compat.patch
+++ b/toolchain/gcc/patches/5.5.0/851-libgcc_no_compat.patch
@@ -0,0 +1,12 @@
+--- a/libgcc/config/t-libunwind
+++ b/libgcc/config/t-libunwind
+@@ -2,8 +2,7 @@
+ 
+ HOST_LIBGCC2_CFLAGS += -DUSE_GAS_SYMVER
+ 
+-LIB2ADDEH = $(srcdir)/unwind-sjlj.c $(srcdir)/unwind-c.c \
+-  $(srcdir)/unwind-compat.c $(srcdir)/unwind-dw2-fde-compat.c
+LIB2ADDEH = $(srcdir)/unwind-sjlj.c $(srcdir)/unwind-c.c
+ LIB2ADDEHSTATIC = $(srcdir)/unwind-sjlj.c $(srcdir)/unwind-c.c
+ 
+ # Override the default value from t-slibgcc-elf-ver and mention -lunwind
--- a/toolchain/gcc/patches/5.5.0/870-ppc_no_crtsavres.patch
+++ b/toolchain/gcc/patches/5.5.0/870-ppc_no_crtsavres.patch
@@ -0,0 +1,11 @@
+--- a/gcc/config/rs6000/rs6000.c
+++ b/gcc/config/rs6000/rs6000.c
+@@ -21528,7 +21528,7 @@ rs6000_savres_strategy (rs6000_stack_t *
+   /* Define cutoff for using out-of-line functions to save registers.  */
+   if (DEFAULT_ABI == ABI_V4 || TARGET_ELF)
+     {
+-      if (!optimize_size)
+      if (1)
+ 	{
+ 	  strategy |= SAVE_INLINE_FPRS | REST_INLINE_FPRS;
+ 	  strategy |= SAVE_INLINE_GPRS | REST_INLINE_GPRS;
--- a/toolchain/gcc/patches/5.5.0/880-no_java_section.patch
+++ b/toolchain/gcc/patches/5.5.0/880-no_java_section.patch
@@ -0,0 +1,11 @@
+--- a/gcc/defaults.h
+++ b/gcc/defaults.h
+@@ -380,7 +380,7 @@ see the files COPYING3 and COPYING.RUNTI
+ /* If we have named section and we support weak symbols, then use the
+    .jcr section for recording java classes which need to be registered
+    at program start-up time.  */
+-#if defined (TARGET_ASM_NAMED_SECTION) && SUPPORTS_WEAK
+#if 0 && defined (TARGET_ASM_NAMED_SECTION) && SUPPORTS_WEAK
+ #ifndef JCR_SECTION_NAME
+ #define JCR_SECTION_NAME ".jcr"
+ #endif
--- a/toolchain/gcc/patches/5.5.0/881-no_tm_section.patch
+++ b/toolchain/gcc/patches/5.5.0/881-no_tm_section.patch
@@ -0,0 +1,11 @@
+--- a/libgcc/crtstuff.c
+++ b/libgcc/crtstuff.c
+@@ -152,7 +152,7 @@ call_ ## FUNC (void)					\
+ #endif
+ 
+ #if !defined(USE_TM_CLONE_REGISTRY) && defined(OBJECT_FORMAT_ELF)
+-# define USE_TM_CLONE_REGISTRY 1
+# define USE_TM_CLONE_REGISTRY 0
+ #endif
+ 
+ /* We do not want to add the weak attribute to the declarations of these
--- a/toolchain/gcc/patches/5.5.0/900-bad-mips16-crt.patch
+++ b/toolchain/gcc/patches/5.5.0/900-bad-mips16-crt.patch
@@ -0,0 +1,9 @@
+--- a/libgcc/config/mips/t-mips16
+++ b/libgcc/config/mips/t-mips16
+@@ -43,3 +43,6 @@ SYNC_CFLAGS = -mno-mips16
+ 
+ # Version these symbols if building libgcc.so.
+ SHLIB_MAPFILES += $(srcdir)/config/mips/libgcc-mips16.ver
+
+CRTSTUFF_T_CFLAGS += -mno-mips16
+CRTSTUFF_T_CFLAGS_S += -mno-mips16
--- a/toolchain/gcc/patches/5.5.0/910-mbsd_multi.patch
+++ b/toolchain/gcc/patches/5.5.0/910-mbsd_multi.patch
@@ -0,0 +1,222 @@
+
+	This patch brings over a few features from MirBSD:
+	* -fhonour-copts
+	  If this option is not given, it's warned (depending
+	  on environment variables). This is to catch errors
+	  of misbuilt packages which override CFLAGS themselves.
+	* -Werror-maybe-reset
+	  Has the effect of -Wno-error if GCC_NO_WERROR is
+	  set and not '0', a no-operation otherwise. This is
+	  to be able to use -Werror in "make" but prevent
+	  GNU autoconf generated configure scripts from
+	  freaking out.
+
+	This patch was authored by Thorsten Glaser <tg at mirbsd.de>
+	with copyright assignment to the FSF in effect.
+
+--- a/gcc/c-family/c-opts.c
+++ b/gcc/c-family/c-opts.c
+@@ -122,6 +122,9 @@ static int class_dump_flags;
+ /* Whether any standard preincluded header has been preincluded.  */
+ static bool done_preinclude;
+ 
+/* Check if a port honours COPTS.  */
+static int honour_copts = 0;
+
+ static void handle_OPT_d (const char *);
+ static void set_std_cxx98 (int);
+ static void set_std_cxx11 (int);
+@@ -449,6 +452,12 @@ c_common_handle_option (size_t scode, co
+       flag_no_builtin = !value;
+       break;
+ 
+    case OPT_fhonour_copts:
+      if (c_language == clk_c) {
+        honour_copts++;
+      }
+      break;
+
+     case OPT_fconstant_string_class_:
+       constant_string_class_name = arg;
+       break;
+@@ -1039,6 +1048,47 @@ c_common_init (void)
+       return false;
+     }
+ 
+  if (c_language == clk_c) {
+    char *ev = getenv ("GCC_HONOUR_COPTS");
+    int evv;
+    if (ev == NULL)
+      evv = -1;
+    else if ((*ev == '0') || (*ev == '\0'))
+      evv = 0;
+    else if (*ev == '1')
+      evv = 1;
+    else if (*ev == '2')
+      evv = 2;
+    else if (*ev == 's')
+      evv = -1;
+    else {
+      warning (0, "unknown GCC_HONOUR_COPTS value, assuming 1");
+      evv = 1; /* maybe depend this on something like MIRBSD_NATIVE?  */
+    }
+    if (evv == 1) {
+      if (honour_copts == 0) {
+        error ("someone does not honour COPTS at all in lenient mode");
+        return false;
+      } else if (honour_copts != 1) {
+        warning (0, "someone does not honour COPTS correctly, passed %d times",
+         honour_copts);
+      }
+    } else if (evv == 2) {
+      if (honour_copts == 0) {
+        error ("someone does not honour COPTS at all in strict mode");
+        return false;
+      } else if (honour_copts != 1) {
+        error ("someone does not honour COPTS correctly, passed %d times",
+         honour_copts);
+        return false;
+      }
+    } else if (evv == 0) {
+      if (honour_copts != 1)
+        inform (0, "someone does not honour COPTS correctly, passed %d times",
+         honour_copts);
+    }
+  }
+
+   return true;
+ }
+ 
+--- a/gcc/c-family/c.opt
+++ b/gcc/c-family/c.opt
+@@ -431,6 +431,10 @@ Wfloat-conversion
+ C ObjC C++ ObjC++ Var(warn_float_conversion) LangEnabledBy(C ObjC C++ ObjC++,Wconversion)
+ Warn for implicit type conversions that cause loss of floating point precision
+ 
+Werror-maybe-reset
+C ObjC C++ ObjC++
+; Documented in common.opt
+
+ Wfloat-equal
+ C ObjC C++ ObjC++ Var(warn_float_equal) Warning
+ Warn if testing floating point numbers for equality
+@@ -1161,6 +1165,9 @@ C++ ObjC++ Optimization Alias(fexception
+ fhonor-std
+ C++ ObjC++ Ignore Warn(switch %qs is no longer supported)
+ 
+fhonour-copts
+C ObjC C++ ObjC++ RejectNegative
+
+ fhosted
+ C ObjC
+ Assume normal C execution environment
+--- a/gcc/common.opt
+++ b/gcc/common.opt
+@@ -561,6 +561,10 @@ Werror=
+ Common Joined
+ Treat specified warning as error
+ 
+Werror-maybe-reset
+Common
+If environment variable GCC_NO_WERROR is set, act as -Wno-error
+
+ Wextra
+ Common Var(extra_warnings) Warning
+ Print extra (possibly unwanted) warnings
+@@ -1360,6 +1364,9 @@ fguess-branch-probability
+ Common Report Var(flag_guess_branch_prob) Optimization
+ Enable guessing of branch probabilities
+ 
+fhonour-copts
+Common RejectNegative
+
+ ; Nonzero means ignore `#ident' directives.  0 means handle them.
+ ; Generate position-independent code for executables if possible
+ ; On SVR4 targets, it also controls whether or not to emit a
+--- a/gcc/opts.c
+++ b/gcc/opts.c
+@@ -1699,6 +1699,17 @@ common_handle_option (struct gcc_options
+ 			       opts, opts_set, loc, dc);
+       break;
+ 
+    case OPT_Werror_maybe_reset:
+      {
+        char *ev = getenv ("GCC_NO_WERROR");
+        if ((ev != NULL) && (*ev != '0'))
+          warnings_are_errors = 0;
+      }
+      break;
+
+    case OPT_fhonour_copts:
+      break;
+
+     case OPT_Wlarger_than_:
+       opts->x_larger_than_size = value;
+       opts->x_warn_larger_than = value != -1;
+--- a/gcc/doc/cppopts.texi
+++ b/gcc/doc/cppopts.texi
+@@ -163,6 +163,11 @@ in older programs.  This warning is on b
+ Make all warnings into hard errors.  Source code which triggers warnings
+ will be rejected.
+ 
+@item -Werror-maybe-reset
+@opindex Werror-maybe-reset
+Act like @samp{-Wno-error} if the @env{GCC_NO_WERROR} environment
+variable is set to anything other than 0 or empty.
+
+ @item -Wsystem-headers
+ @opindex Wsystem-headers
+ Issue warnings for code in system headers.  These are normally unhelpful
+--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
+@@ -251,7 +251,7 @@ Objective-C and Objective-C++ Dialects}.
+ -Wdisabled-optimization @gol
+ -Wno-discarded-qualifiers -Wno-discarded-array-qualifiers @gol
+ -Wno-div-by-zero -Wdouble-promotion -Wempty-body  -Wenum-compare @gol
+--Wno-endif-labels -Werror  -Werror=* @gol
+-Wno-endif-labels -Werror  -Werror=* -Werror-maybe-reset @gol
+ -Wfatal-errors  -Wfloat-equal  -Wformat  -Wformat=2 @gol
+ -Wno-format-contains-nul -Wno-format-extra-args -Wformat-nonliteral @gol
+ -Wformat-security  -Wformat-signedness  -Wformat-y2k @gol
+@@ -5388,6 +5388,22 @@ This option is only supported for C and 
+ @option{-Wall} and by @option{-Wpedantic}, which can be disabled with
+ @option{-Wno-pointer-sign}.
+ 
+@item -Werror-maybe-reset
+@opindex Werror-maybe-reset
+Act like @samp{-Wno-error} if the @env{GCC_NO_WERROR} environment
+variable is set to anything other than 0 or empty.
+
+@item -fhonour-copts
+@opindex fhonour-copts
+If @env{GCC_HONOUR_COPTS} is set to 1, abort if this option is not
+given at least once, and warn if it is given more than once.
+If @env{GCC_HONOUR_COPTS} is set to 2, abort if this option is not
+given exactly once.
+If @env{GCC_HONOUR_COPTS} is set to 0 or unset, warn if this option
+is not given exactly once.
+The warning is quelled if @env{GCC_HONOUR_COPTS} is set to @samp{s}.
+This flag and environment variable only affect the C language.
+
+ @item -Wstack-protector
+ @opindex Wstack-protector
+ @opindex Wno-stack-protector
+@@ -7866,7 +7882,7 @@ so, the first branch is redirected to ei
+ second branch or a point immediately following it, depending on whether
+ the condition is known to be true or false.
+ 
+-Enabled at levels @option{-O2}, @option{-O3}, @option{-Os}.
+Enabled at levels @option{-O3}.
+ 
+ @item -fsplit-wide-types
+ @opindex fsplit-wide-types
+--- a/gcc/java/jvspec.c
+++ b/gcc/java/jvspec.c
+@@ -629,6 +629,7 @@ lang_specific_pre_link (void)
+      class name.  Append dummy `.c' that can be stripped by set_input so %b
+      is correct.  */ 
+   set_input (concat (main_class_name, "main.c", NULL));
+  putenv ("GCC_HONOUR_COPTS=s"); /* XXX hack!  */
+   err = do_spec (jvgenmain_spec);
+   if (err == 0)
+     {
--- a/toolchain/gcc/patches/5.5.0/920-specs_nonfatal_getenv.patch
+++ b/toolchain/gcc/patches/5.5.0/920-specs_nonfatal_getenv.patch
@@ -0,0 +1,15 @@
+--- a/gcc/gcc.c
+++ b/gcc/gcc.c
+@@ -8828,8 +8828,10 @@ getenv_spec_function (int argc, const ch
+ 
+   value = getenv (argv[0]);
+   if (!value)
+-    fatal_error (input_location,
+-		 "environment variable %qs not defined", argv[0]);
+    {
+      warning (input_location, "environment variable %qs not defined", argv[0]);
+      value = "";
+    }
+ 
+   /* We have to escape every character of the environment variable so
+      they are not interpreted as active spec characters.  A
--- a/toolchain/gcc/patches/5.5.0/930-fix-mips-noexecstack.patch
+++ b/toolchain/gcc/patches/5.5.0/930-fix-mips-noexecstack.patch
@@ -0,0 +1,111 @@
+From da45b3fde60095756f5f6030f6012c23a3d34429 Mon Sep 17 00:00:00 2001
+From: Andrew McDonnell <bugs@andrewmcdonnell.net>
+Date: Fri, 3 Oct 2014 19:09:00 +0930
+Subject: Add .note.GNU-stack section
+
+See http://lists.busybox.net/pipermail/uclibc/2014-October/048671.html
+Below copied from https://gcc.gnu.org/ml/gcc-patches/2014-09/msg02430.html
+
+Re: [Patch, MIPS] Add .note.GNU-stack section
+
+    From: Steve Ellcey <sellcey at mips dot com>
+
+On Wed, 2014-09-10 at 10:15 -0700, Eric Christopher wrote:
+>
+>
+> On Wed, Sep 10, 2014 at 9:27 AM, <pinskia@gmail.com> wrote:
+
+>         This works except you did not update the assembly files in
+>         libgcc or glibc. We (Cavium) have the same patch in our tree
+>         for a few released versions.
+
+> Mind just checking yours in then Andrew?
+
+> Thanks!
+> -eric
+
+I talked to Andrew about what files he changed in GCC and created and
+tested this new patch.  Andrew also mentioned changing some assembly
+files in glibc but I don't see any use of '.section .note.GNU-stack' in
+any assembly files in glibc (for any platform) so I wasn't planning on
+creating a glibc to add them to mips glibc assembly language files.
+
+OK to check in this patch?
+
+Steve Ellcey
+sellcey@mips.com
+
+
+
+2014-09-26  Steve Ellcey  <sellcey@mips.com>
+---
+ gcc/config/mips/mips.c          | 3 +++
+ libgcc/config/mips/crti.S       | 4 ++++
+ libgcc/config/mips/crtn.S       | 3 +++
+ libgcc/config/mips/mips16.S     | 4 ++++
+ libgcc/config/mips/vr4120-div.S | 4 ++++
+ 5 files changed, 18 insertions(+)
+
+--- a/gcc/config/mips/mips.c
+++ b/gcc/config/mips/mips.c
+@@ -19629,6 +19629,9 @@ mips_lra_p (void)
+ #undef TARGET_LRA_P
+ #define TARGET_LRA_P mips_lra_p
+ 
+#undef TARGET_ASM_FILE_END
+#define TARGET_ASM_FILE_END file_end_indicate_exec_stack
+
+ struct gcc_target targetm = TARGET_INITIALIZER;
+ 
+ #include "gt-mips.h"
+--- a/libgcc/config/mips/crti.S
+++ b/libgcc/config/mips/crti.S
+@@ -21,6 +21,10 @@ a copy of the GCC Runtime Library Except
+ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+ <http://www.gnu.org/licenses/>.  */
+ 
+
+/* An executable stack is *not* required for these functions.  */
+	.section .note.GNU-stack,"",%progbits
+
+ /* 4 slots for argument spill area.  1 for cpreturn, 1 for stack.
+    Return spill offset of 40 and 20.  Aligned to 16 bytes for n32.  */
+ 
+--- a/libgcc/config/mips/crtn.S
+++ b/libgcc/config/mips/crtn.S
+@@ -21,6 +21,9 @@ a copy of the GCC Runtime Library Except
+ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+ <http://www.gnu.org/licenses/>.  */
+ 
+/* An executable stack is *not* required for these functions.  */
+	.section .note.GNU-stack,"",%progbits
+
+ /* 4 slots for argument spill area.  1 for cpreturn, 1 for stack.
+    Return spill offset of 40 and 20.  Aligned to 16 bytes for n32.  */
+ 
+--- a/libgcc/config/mips/mips16.S
+++ b/libgcc/config/mips/mips16.S
+@@ -48,6 +48,10 @@ see the files COPYING3 and COPYING.RUNTI
+    values using the soft-float calling convention, but do the actual
+    operation using the hard floating point instructions.  */
+ 
+/* An executable stack is *not* required for these functions.  */
+	.section .note.GNU-stack,"",%progbits
+	.previous
+
+ #if defined _MIPS_SIM && (_MIPS_SIM == _ABIO32 || _MIPS_SIM == _ABIO64)
+ 
+ /* This file contains 32-bit assembly code.  */
+--- a/libgcc/config/mips/vr4120-div.S
+++ b/libgcc/config/mips/vr4120-div.S
+@@ -26,6 +26,10 @@ see the files COPYING3 and COPYING.RUNTI
+    -mfix-vr4120.  div and ddiv do not give the correct result when one
+    of the operands is negative.  */
+ 
+/* An executable stack is *not* required for these functions.  */
+	.section .note.GNU-stack,"",%progbits
+	.previous
+
+ 	.set	nomips16
+ 
+ #define DIV								\
--- a/toolchain/gcc/patches/5.5.0/931-fix-MIPS-softfloat-build-issue.patch
+++ b/toolchain/gcc/patches/5.5.0/931-fix-MIPS-softfloat-build-issue.patch
@@ -0,0 +1,167 @@
+From 2b46f9187b6f994fc450628a7cd97fc703dd23e0 Mon Sep 17 00:00:00 2001
+From: BangLang Huang <banglang.huang@foxmail.com>
+Date: Wed, 9 Nov 2016 10:36:49 +0800
+Subject: [PATCH] fix MIPS softfloat build issue
+
+    This patch is backport from github/libffi #272
+
+Signed-off-by: BangLang Huang <banglang.huang@foxmail.com>
+---
+ libffi/src/mips/n32.S | 17 +++++++++++++++++
+ libffi/src/mips/o32.S | 17 +++++++++++++++++
+ 2 files changed, 34 insertions(+)
+
+--- a/libffi/src/mips/n32.S
+++ b/libffi/src/mips/n32.S
+@@ -107,6 +107,16 @@ loadregs:	
+ 
+ 	REG_L	t6, 3*FFI_SIZEOF_ARG($fp)  # load the flags word into t6.
+ 
+#ifdef __mips_soft_float
+	REG_L	a0, 0*FFI_SIZEOF_ARG(t9)
+	REG_L	a1, 1*FFI_SIZEOF_ARG(t9)
+	REG_L	a2, 2*FFI_SIZEOF_ARG(t9)
+	REG_L	a3, 3*FFI_SIZEOF_ARG(t9)
+	REG_L	a4, 4*FFI_SIZEOF_ARG(t9)
+	REG_L	a5, 5*FFI_SIZEOF_ARG(t9)
+	REG_L	a6, 6*FFI_SIZEOF_ARG(t9)
+	REG_L	a7, 7*FFI_SIZEOF_ARG(t9)
+#else
+ 	and	t4, t6, ((1<<FFI_FLAG_BITS)-1)
+ 	REG_L	a0, 0*FFI_SIZEOF_ARG(t9)
+ 	beqz	t4, arg1_next
+@@ -193,6 +203,7 @@ arg7_next:	
+ arg8_doublep:	
+  	l.d	$f19, 7*FFI_SIZEOF_ARG(t9)	
+ arg8_next:	
+#endif
+ 
+ callit:		
+ 	# Load the function pointer
+@@ -214,6 +225,7 @@ retint:
+ 	b	epilogue
+ 
+ retfloat:
+#ifndef __mips_soft_float
+ 	bne     t6, FFI_TYPE_FLOAT, retdouble
+ 	jal	t9
+ 	REG_L	t4, 4*FFI_SIZEOF_ARG($fp)
+@@ -272,6 +284,7 @@ retstruct_f_d:	
+ 	s.s	$f0, 0(t4)
+ 	s.d	$f2, 8(t4)
+ 	b	epilogue
+#endif
+ 
+ retstruct_d_soft:
+ 	bne	t6, FFI_TYPE_STRUCT_D_SOFT, retstruct_f_soft
+@@ -429,6 +442,7 @@ ffi_closure_N32:
+ 	REG_S	a6, A6_OFF2($sp)
+ 	REG_S	a7, A7_OFF2($sp)
+ 
+#ifndef __mips_soft_float
+ 	# Store all possible float/double registers.
+ 	s.d	$f12, F12_OFF2($sp)
+ 	s.d	$f13, F13_OFF2($sp)
+@@ -438,6 +452,7 @@ ffi_closure_N32:
+ 	s.d	$f17, F17_OFF2($sp)
+ 	s.d	$f18, F18_OFF2($sp)
+ 	s.d	$f19, F19_OFF2($sp)
+#endif
+ 
+ 	# Call ffi_closure_mips_inner_N32 to do the real work.
+ 	LA	t9, ffi_closure_mips_inner_N32
+@@ -458,6 +473,7 @@ cls_retint:
+ 	b	cls_epilogue
+ 
+ cls_retfloat:
+#ifndef __mips_soft_float
+ 	bne     v0, FFI_TYPE_FLOAT, cls_retdouble
+ 	l.s	$f0, V0_OFF2($sp)
+ 	b	cls_epilogue
+@@ -500,6 +516,7 @@ cls_retstruct_f_d:	
+ 	l.s	$f0, V0_OFF2($sp)
+ 	l.d	$f2, V1_OFF2($sp)
+ 	b	cls_epilogue
+#endif
+ 	
+ cls_retstruct_small2:	
+ 	REG_L	v0, V0_OFF2($sp)
+--- a/libffi/src/mips/o32.S
+++ b/libffi/src/mips/o32.S
+@@ -82,13 +82,16 @@ sixteen:
+ 		
+ 	ADDU	$sp, 4 * FFI_SIZEOF_ARG		# adjust $sp to new args
+ 
+#ifndef __mips_soft_float
+ 	bnez	t0, pass_d			# make it quick for int
+#endif
+ 	REG_L	a0, 0*FFI_SIZEOF_ARG($sp)	# just go ahead and load the
+ 	REG_L	a1, 1*FFI_SIZEOF_ARG($sp)	# four regs.
+ 	REG_L	a2, 2*FFI_SIZEOF_ARG($sp)
+ 	REG_L	a3, 3*FFI_SIZEOF_ARG($sp)
+ 	b	call_it
+ 
+#ifndef __mips_soft_float
+ pass_d:
+ 	bne	t0, FFI_ARGS_D, pass_f
+ 	l.d	$f12, 0*FFI_SIZEOF_ARG($sp)	# load $fp regs from args
+@@ -130,6 +133,7 @@ pass_f_d:		
+  #	bne	t0, FFI_ARGS_F_D, call_it
+ 	l.s	$f12, 0*FFI_SIZEOF_ARG($sp)	# load $fp regs from args
+ 	l.d	$f14, 2*FFI_SIZEOF_ARG($sp)	# passing double and float
+#endif
+ 
+ call_it:	
+ 	# Load the function pointer
+@@ -158,14 +162,23 @@ retfloat:
+ 	bne     t2, FFI_TYPE_FLOAT, retdouble
+ 	jalr	t9
+ 	REG_L	t0, SIZEOF_FRAME + 4*FFI_SIZEOF_ARG($fp)
+#ifndef __mips_soft_float
+ 	s.s	$f0, 0(t0)
+#else
+	REG_S v0, 0(t0)
+#endif
+ 	b	epilogue
+ 
+ retdouble:	
+ 	bne	t2, FFI_TYPE_DOUBLE, noretval
+ 	jalr	t9
+ 	REG_L	t0, SIZEOF_FRAME + 4*FFI_SIZEOF_ARG($fp)
+#ifndef __mips_soft_float
+ 	s.d	$f0, 0(t0)
+#else
+	REG_S v1, 4(t0)
+	REG_S v0, 0(t0)
+#endif
+ 	b	epilogue
+ 	
+ noretval:	
+@@ -261,9 +274,11 @@ $LCFI7:
+ 	li	$13, 1		# FFI_O32
+ 	bne	$16, $13, 1f	# Skip fp save if FFI_O32_SOFT_FLOAT
+ 	
+#ifndef __mips_soft_float
+ 	# Store all possible float/double registers.
+ 	s.d	$f12, FA_0_0_OFF2($fp)
+ 	s.d	$f14, FA_1_0_OFF2($fp)
+#endif
+ 1:	
+ 	# Call ffi_closure_mips_inner_O32 to do the work.
+ 	la	t9, ffi_closure_mips_inner_O32
+@@ -281,6 +296,7 @@ $LCFI7:
+ 	li	$13, 1		# FFI_O32
+ 	bne	$16, $13, 1f	# Skip fp restore if FFI_O32_SOFT_FLOAT
+ 
+#ifndef __mips_soft_float
+ 	li	$9, FFI_TYPE_FLOAT
+ 	l.s	$f0, V0_OFF2($fp)
+ 	beq	$8, $9, closure_done
+@@ -288,6 +304,7 @@ $LCFI7:
+ 	li	$9, FFI_TYPE_DOUBLE
+ 	l.d	$f0, V0_OFF2($fp)
+ 	beq	$8, $9, closure_done
+#endif
+ 1:	
+ 	REG_L	$3, V1_OFF2($fp)
+ 	REG_L	$2, V0_OFF2($fp)
--- a/toolchain/gcc/patches/5.5.0/940-no-clobber-stamp-bits.patch
+++ b/toolchain/gcc/patches/5.5.0/940-no-clobber-stamp-bits.patch
@@ -0,0 +1,11 @@
+--- a/libstdc++-v3/include/Makefile.in
+++ b/libstdc++-v3/include/Makefile.in
+@@ -1422,7 +1422,7 @@ stamp-bits: ${bits_headers}
+ 	@$(STAMP) stamp-bits
+ 
+ stamp-bits-sup: stamp-bits ${bits_sup_headers}
+-	@-cd ${bits_builddir} && $(LN_S) $? . 2>/dev/null
+	@-cd ${bits_builddir} && $(LN_S) $(filter-out stamp-bits,$?) . 2>/dev/null
+ 	@$(STAMP) stamp-bits-sup
+ 
+ stamp-c_base: ${c_base_headers}
--- a/toolchain/gcc/patches/5.5.0/950-cpp_file_path_translation.patch
+++ b/toolchain/gcc/patches/5.5.0/950-cpp_file_path_translation.patch
@@ -0,0 +1,182 @@
+Forward ported from attachment to https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47047
+
+--- a/gcc/c-family/c-opts.c
+++ b/gcc/c-family/c-opts.c
+@@ -581,6 +581,10 @@ c_common_handle_option (size_t scode, co
+       add_path (xstrdup (arg), SYSTEM, 0, true);
+       break;
+ 
+    case OPT_iremap:
+      add_cpp_remap_path (arg);
+      break;
+
+     case OPT_iwithprefix:
+       add_prefixed_path (arg, SYSTEM);
+       break;
+--- a/gcc/c-family/c.opt
+++ b/gcc/c-family/c.opt
+@@ -1528,6 +1528,10 @@ iquote
+ C ObjC C++ ObjC++ Joined Separate MissingArgError(missing path after %qs)
+ -iquote <dir>	Add <dir> to the end of the quote include path
+ 
+iremap
+C ObjC C++ ObjC++ Joined Separate
+-iremap <src:dst>  Convert <src> to <dst> if it occurs as prefix in __FILE__.
+
+ iwithprefix
+ C ObjC C++ ObjC++ Joined Separate
+ -iwithprefix <dir>	Add <dir> to the end of the system include path
+--- a/gcc/doc/cpp.texi
+++ b/gcc/doc/cpp.texi
+@@ -4441,6 +4441,7 @@ without notice.
+ @c man begin SYNOPSIS
+ cpp [@option{-D}@var{macro}[=@var{defn}]@dots{}] [@option{-U}@var{macro}]
+     [@option{-I}@var{dir}@dots{}] [@option{-iquote}@var{dir}@dots{}]
+    [@option{-iremap}@var{src}:@var{dst}]
+     [@option{-W}@var{warn}@dots{}]
+     [@option{-M}|@option{-MM}] [@option{-MG}] [@option{-MF} @var{filename}]
+     [@option{-MP}] [@option{-MQ} @var{target}@dots{}]
+--- a/gcc/doc/cppopts.texi
+++ b/gcc/doc/cppopts.texi
+@@ -532,6 +532,12 @@ Search @var{dir} only for header files r
+ If @var{dir} begins with @code{=}, then the @code{=} will be replaced
+ by the sysroot prefix; see @option{--sysroot} and @option{-isysroot}.
+ 
+@item -iremap @var{src}:@var{dst}
+@opindex iremap
+Replace the prefix @var{src} in __FILE__ with @var{dst} at expansion time.
+This option can be specified more than once.  Processing stops at the first
+match.
+
+ @item -fdirectives-only
+ @opindex fdirectives-only
+ When preprocessing, handle directives, but do not expand macros.
+--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
+@@ -494,8 +494,8 @@ Objective-C and Objective-C++ Dialects}.
+ @item Directory Options
+ @xref{Directory Options,,Options for Directory Search}.
+ @gccoptlist{-B@var{prefix} -I@var{dir} -iplugindir=@var{dir} @gol
+--iquote@var{dir} -L@var{dir} -specs=@var{file} -I- @gol
+---sysroot=@var{dir} --no-sysroot-suffix}
+-iquote@var{dir} -iremap@var{src}:@var{dst} -L@var{dir} -specs=@var{file} @gol
+-I- --sysroot=@var{dir} --no-sysroot-suffix}
+ 
+ @item Machine Dependent Options
+ @xref{Submodel Options,,Hardware Models and Configurations}.
+@@ -11485,6 +11485,12 @@ be searched for header files only for th
+ "@var{file}"}; they are not searched for @code{#include <@var{file}>},
+ otherwise just like @option{-I}.
+ 
+@item -iremap @var{src}:@var{dst}
+@opindex iremap
+Replace the prefix @var{src} in __FILE__ with @var{dst} at expansion time.
+This option can be specified more than once.  Processing stops at the first
+match.
+
+ @item -L@var{dir}
+ @opindex L
+ Add directory @var{dir} to the list of directories to be searched
+--- a/libcpp/include/cpplib.h
+++ b/libcpp/include/cpplib.h
+@@ -751,6 +751,9 @@ extern void cpp_set_lang (cpp_reader *, 
+ /* Set the include paths.  */
+ extern void cpp_set_include_chains (cpp_reader *, cpp_dir *, cpp_dir *, int);
+ 
+/* Provide src:dst pair for __FILE__ remapping.  */
+extern void add_cpp_remap_path (const char *);
+
+ /* Call these to get pointers to the options, callback, and deps
+    structures for a given reader.  These pointers are good until you
+    call cpp_finish on that reader.  You can either edit the callbacks
+--- a/libcpp/macro.c
+++ b/libcpp/macro.c
+@@ -224,6 +224,64 @@ static const char * const monthnames[] =
+   "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
+ };
+ 
+static size_t remap_pairs;
+static char **remap_src;
+static char **remap_dst;
+
+void
+add_cpp_remap_path (const char *arg)
+{
+  const char *arg_dst;
+  size_t len;
+
+  arg_dst = strchr(arg, ':');
+  if (arg_dst == NULL)
+    {
+      fprintf(stderr, "Invalid argument for -iremap\n");
+      exit(1);
+    }
+
+  len = arg_dst - arg;
+  ++arg_dst;
+
+  remap_src = (char **) xrealloc(remap_src, sizeof(char *) * (remap_pairs + 1));
+  remap_dst = (char **) xrealloc(remap_dst, sizeof(char *) * (remap_pairs + 1));
+
+  remap_src[remap_pairs] = (char *) xmalloc(len + 1);
+  memcpy(remap_src[remap_pairs], arg, len);
+  remap_src[remap_pairs][len] = '\0';
+  remap_dst[remap_pairs] = xstrdup(arg_dst);
+  ++remap_pairs;
+}
+
+static const char *
+cpp_remap_file (const char *arg, char **tmp_name)
+{
+  char *result;
+  size_t i, len;
+
+  for (i = 0; i < remap_pairs; ++i)
+    {
+      len = strlen (remap_src[i]);
+      if (strncmp (remap_src[i], arg, len))
+	continue;
+      if (arg[len] == '\0')
+	return xstrdup (remap_dst[i]);
+      if (arg[len] != '/')
+	continue;
+      arg += len;
+      len = strlen (remap_dst[i]);
+      result = (char *) xmalloc (len + strlen (arg) + 1);
+      memcpy(result, remap_dst[i], len);
+      strcpy(result + len, arg);
+      *tmp_name = result;
+
+      return result;
+    }
+
+   return arg;
+}
+
+ /* Helper function for builtin_macro.  Returns the text generated by
+    a builtin macro. */
+ const uchar *
+@@ -286,6 +344,7 @@ _cpp_builtin_macro_text (cpp_reader *pfi
+       {
+ 	unsigned int len;
+ 	const char *name;
+	char *tmp_name = NULL;
+ 	uchar *buf;
+ 	
+ 	if (node->value.builtin == BT_FILE)
+@@ -297,6 +356,7 @@ _cpp_builtin_macro_text (cpp_reader *pfi
+ 	    if (!name)
+ 	      abort ();
+ 	  }
+	name = cpp_remap_file (name, &tmp_name);
+ 	len = strlen (name);
+ 	buf = _cpp_unaligned_alloc (pfile, len * 2 + 3);
+ 	result = buf;
+@@ -304,6 +364,7 @@ _cpp_builtin_macro_text (cpp_reader *pfi
+ 	buf = cpp_quote_string (buf + 1, (const unsigned char *) name, len);
+ 	*buf++ = '"';
+ 	*buf = '\0';
+	free (tmp_name);
+       }
+       break;
+ 
--- a/toolchain/gcc/patches/5.5.0/960-go_libm.patch
+++ b/toolchain/gcc/patches/5.5.0/960-go_libm.patch
@@ -0,0 +1,11 @@
+--- a/gcc/go/Make-lang.in
+++ b/gcc/go/Make-lang.in
+@@ -74,7 +74,7 @@ go_OBJS = $(GO_OBJS) go/gospec.o
+ 
+ go1$(exeext): $(GO_OBJS) attribs.o $(BACKEND) $(LIBDEPS)
+ 	+$(LLINKER) $(ALL_LINKERFLAGS) $(LDFLAGS) -o $@ \
+-	      $(GO_OBJS) attribs.o $(BACKEND) $(LIBS) $(BACKENDLIBS)
+	      $(GO_OBJS) attribs.o $(BACKEND) $(LIBS) $(BACKENDLIBS) -lm
+ 
+ # Documentation.
+ 
--- a/toolchain/gcc/patches/5.5.0/970-warn_bug.patch
+++ b/toolchain/gcc/patches/5.5.0/970-warn_bug.patch
@@ -0,0 +1,11 @@
+--- a/libgo/runtime/mprof.goc
+++ b/libgo/runtime/mprof.goc
+@@ -403,7 +403,7 @@ func ThreadCreateProfile(p Slice) (n int
+ 
+ func Stack(b Slice, all bool) (n int) {
+ 	byte *pc, *sp;
+-	bool enablegc;
+	bool enablegc = false; /* workaround GCC bug #36550 */
+ 	
+ 	sp = runtime_getcallersp(&b);
+ 	pc = (byte*)(uintptr)runtime_getcallerpc(&b);
--- a/toolchain/gcc/patches/7.5.0/001-revert_register_mode_search.patch
+++ b/toolchain/gcc/patches/7.5.0/001-revert_register_mode_search.patch
@@ -0,0 +1,77 @@
+commit 31285a20390a5e53a74a2a71d1b5c82f366ddd5a
+Author: Felix Fietkau <nbd@openwrt.org>
+Date:   Tue May 6 11:49:05 2014 +0000
+
+    gcc: revert an upstream patch that is causing a regression on powerpc
+    
+    https://forum.openwrt.org/viewtopic.php?pid=232494#p232494
+    
+    Signed-off-by: Felix Fietkau <nbd@openwrt.org>
+    
+    SVN-Revision: 40709
+
+Revert of:
+
+commit 275035b56823b26d5fb7e90fad945b998648edf2
+Author: bergner <bergner@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date:   Thu Sep 5 14:09:07 2013 +0000
+
+        PR target/58139
+        * reginfo.c (choose_hard_reg_mode): Scan through all mode classes
+        looking for widest mode.
+
+
+    git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@202286 138bc75d-0d04-0410-961f-82ee72b054a4
+
+
+--- a/gcc/reginfo.c
+++ b/gcc/reginfo.c
+@@ -637,35 +637,40 @@ choose_hard_reg_mode (unsigned int regno
+        mode = GET_MODE_WIDER_MODE (mode))
+     if ((unsigned) hard_regno_nregs[regno][mode] == nregs
+ 	&& HARD_REGNO_MODE_OK (regno, mode)
+-	&& (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode))
+-	&& GET_MODE_SIZE (mode) > GET_MODE_SIZE (found_mode))
+	&& (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode)))
+       found_mode = mode;
+ 
+  if (found_mode != VOIDmode)
+    return found_mode;
+
+   for (mode = GET_CLASS_NARROWEST_MODE (MODE_FLOAT);
+        mode != VOIDmode;
+        mode = GET_MODE_WIDER_MODE (mode))
+     if ((unsigned) hard_regno_nregs[regno][mode] == nregs
+ 	&& HARD_REGNO_MODE_OK (regno, mode)
+-	&& (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode))
+-	&& GET_MODE_SIZE (mode) > GET_MODE_SIZE (found_mode))
+	&& (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode)))
+       found_mode = mode;
+ 
+  if (found_mode != VOIDmode)
+    return found_mode;
+
+   for (mode = GET_CLASS_NARROWEST_MODE (MODE_VECTOR_FLOAT);
+        mode != VOIDmode;
+        mode = GET_MODE_WIDER_MODE (mode))
+     if ((unsigned) hard_regno_nregs[regno][mode] == nregs
+ 	&& HARD_REGNO_MODE_OK (regno, mode)
+-	&& (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode))
+-	&& GET_MODE_SIZE (mode) > GET_MODE_SIZE (found_mode))
+	&& (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode)))
+       found_mode = mode;
+ 
+  if (found_mode != VOIDmode)
+    return found_mode;
+
+   for (mode = GET_CLASS_NARROWEST_MODE (MODE_VECTOR_INT);
+        mode != VOIDmode;
+        mode = GET_MODE_WIDER_MODE (mode))
+     if ((unsigned) hard_regno_nregs[regno][mode] == nregs
+ 	&& HARD_REGNO_MODE_OK (regno, mode)
+-	&& (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode))
+-	&& GET_MODE_SIZE (mode) > GET_MODE_SIZE (found_mode))
+	&& (! call_saved || ! HARD_REGNO_CALL_PART_CLOBBERED (regno, mode)))
+       found_mode = mode;
+ 
+   if (found_mode != VOIDmode)
--- a/toolchain/gcc/patches/7.5.0/002-case_insensitive.patch
+++ b/toolchain/gcc/patches/7.5.0/002-case_insensitive.patch
@@ -0,0 +1,24 @@
+commit 81cc26c706b2bc8c8c1eb1a322e5c5157900836e
+Author: Felix Fietkau <nbd@openwrt.org>
+Date:   Sun Oct 19 21:45:51 2014 +0000
+
+    gcc: do not assume that the Mac OS X filesystem is case insensitive
+    
+    Signed-off-by: Felix Fietkau <nbd@openwrt.org>
+    
+    SVN-Revision: 42973
+
+--- a/include/filenames.h
+++ b/include/filenames.h
+@@ -43,11 +43,6 @@ extern "C" {
+ #  define IS_DIR_SEPARATOR(c) IS_DOS_DIR_SEPARATOR (c)
+ #  define IS_ABSOLUTE_PATH(f) IS_DOS_ABSOLUTE_PATH (f)
+ #else /* not DOSish */
+-#  if defined(__APPLE__)
+-#    ifndef HAVE_CASE_INSENSITIVE_FILE_SYSTEM
+-#      define HAVE_CASE_INSENSITIVE_FILE_SYSTEM 1
+-#    endif
+-#  endif /* __APPLE__ */
+ #  define HAS_DRIVE_SPEC(f) (0)
+ #  define IS_DIR_SEPARATOR(c) IS_UNIX_DIR_SEPARATOR (c)
+ #  define IS_ABSOLUTE_PATH(f) IS_UNIX_ABSOLUTE_PATH (f)
--- a/toolchain/gcc/patches/7.5.0/010-documentation.patch
+++ b/toolchain/gcc/patches/7.5.0/010-documentation.patch
@@ -0,0 +1,35 @@
+commit 098bd91f5eae625c7d2ee621e10930fc4434e5e2
+Author: Luka Perkov <luka@openwrt.org>
+Date:   Tue Feb 26 16:16:33 2013 +0000
+
+    gcc: don't build documentation
+    
+    This closes #13039.
+    
+    Signed-off-by: Luka Perkov <luka@openwrt.org>
+    
+    SVN-Revision: 35807
+
+--- a/gcc/Makefile.in
+++ b/gcc/Makefile.in
+@@ -3121,18 +3121,10 @@ doc/gcc.info: $(TEXI_GCC_FILES)
+ doc/gccint.info: $(TEXI_GCCINT_FILES)
+ doc/cppinternals.info: $(TEXI_CPPINT_FILES)
+ 
+-doc/%.info: %.texi
+-	if [ x$(BUILD_INFO) = xinfo ]; then \
+-		$(MAKEINFO) $(MAKEINFOFLAGS) -I . -I $(gcc_docdir) \
+-			-I $(gcc_docdir)/include -o $@ $<; \
+-	fi
+doc/%.info:
+ 
+ # Duplicate entry to handle renaming of gccinstall.info
+-doc/gccinstall.info: $(TEXI_GCCINSTALL_FILES)
+-	if [ x$(BUILD_INFO) = xinfo ]; then \
+-		$(MAKEINFO) $(MAKEINFOFLAGS) -I $(gcc_docdir) \
+-			-I $(gcc_docdir)/include -o $@ $<; \
+-	fi
+doc/gccinstall.info:
+ 
+ doc/cpp.dvi: $(TEXI_CPP_FILES)
+ doc/gcc.dvi: $(TEXI_GCC_FILES)
--- a/toolchain/gcc/patches/7.5.0/110-Fix-MIPS-PR-84790.patch
+++ b/toolchain/gcc/patches/7.5.0/110-Fix-MIPS-PR-84790.patch
@@ -0,0 +1,20 @@
+Fix https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84790.
+MIPS16 functions have a static assembler prologue which clobbers
+registers v0 and v1. Add these register clobbers to function call
+instructions.
+
+--- a/gcc/config/mips/mips.c
+++ b/gcc/config/mips/mips.c
+@@ -3098,6 +3098,12 @@ mips_emit_call_insn (rtx pattern, rtx or
+       emit_insn (gen_update_got_version ());
+     }
+ 
+  if (TARGET_MIPS16 && TARGET_USE_GOT)
+    {
+      clobber_reg (&CALL_INSN_FUNCTION_USAGE (insn), MIPS16_PIC_TEMP);
+      clobber_reg (&CALL_INSN_FUNCTION_USAGE (insn), MIPS_PROLOGUE_TEMP (word_mode));
+    }
+
+   if (TARGET_MIPS16
+       && TARGET_EXPLICIT_RELOCS
+       && TARGET_CALL_CLOBBERED_GP)
--- a/toolchain/gcc/patches/7.5.0/230-musl_libssp.patch
+++ b/toolchain/gcc/patches/7.5.0/230-musl_libssp.patch
@@ -0,0 +1,28 @@
+commit 1877bc9d8f2be143fbe530347a945850d0ecd234
+Author: Steven Barth <cyrus@openwrt.org>
+Date:   Mon Jun 22 10:31:07 2015 +0000
+
+    gcc/musl: rework SSP-support
+    
+    Make musl provide libssp_nonshared.a and make GCC link it unconditionally
+    if musl is used. This should be a no-op if SSP is disabled and seems to be
+    the only reliable way of dealing with SSP over all packages due to the mess
+    that is linkerflags handling in packages.
+    
+    Signed-off-by: Steven Barth <steven@midlink.org>
+    
+    SVN-Revision: 46108
+
+--- a/gcc/gcc.c
+++ b/gcc/gcc.c
+@@ -861,7 +861,9 @@ proper position among the other output f
+ #endif
+ 
+ #ifndef LINK_SSP_SPEC
+-#ifdef TARGET_LIBC_PROVIDES_SSP
+#if DEFAULT_LIBC == LIBC_MUSL
+#define LINK_SSP_SPEC "-lssp_nonshared"
+#elif defined(TARGET_LIBC_PROVIDES_SSP)
+ #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all" \
+ 		       "|fstack-protector-strong|fstack-protector-explicit:}"
+ #else
--- a/toolchain/gcc/patches/7.5.0/300-mips_Os_cpu_rtx_cost_model.patch
+++ b/toolchain/gcc/patches/7.5.0/300-mips_Os_cpu_rtx_cost_model.patch
@@ -0,0 +1,21 @@
+commit ecf7671b769fe96f7b5134be442089f8bdba55d2
+Author: Felix Fietkau <nbd@nbd.name>
+Date:   Thu Aug 4 20:29:45 2016 +0200
+
+gcc: add a patch to generate better code with Os on mips
+
+Also happens to reduce compressed code size a bit
+
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+
+--- a/gcc/config/mips/mips.c
+++ b/gcc/config/mips/mips.c
+@@ -19790,7 +19790,7 @@ mips_option_override (void)
+     flag_pcc_struct_return = 0;
+ 
+   /* Decide which rtx_costs structure to use.  */
+-  if (optimize_size)
+  if (0 && optimize_size)
+     mips_cost = &mips_rtx_cost_optimize_size;
+   else
+     mips_cost = &mips_rtx_cost_data[mips_tune];
--- a/toolchain/gcc/patches/7.5.0/800-arm_v5te_no_ldrd_strd.patch
+++ b/toolchain/gcc/patches/7.5.0/800-arm_v5te_no_ldrd_strd.patch
@@ -0,0 +1,32 @@
+commit b050f87d13b5dc7ed82feb9a90f4529de58bdf25
+Author: Felix Fietkau <nbd@openwrt.org>
+Date:   Wed Feb 19 19:20:10 2014 +0000
+
+    gcc: prevent the use of LDRD/STRD on ARMv5TE
+    
+    These instructions are for 64-bit load/store. On ARMv5TE, the CPU
+    requires addresses to be aligned to 64-bit. When misaligned, behavior is
+    undefined (effectively either loads the same word twice on LDRD, or
+    corrupts surrounding memory on STRD).
+    
+    On ARMv6 and newer, unaligned access is safe.
+    
+    Removing these instructions for ARMv5TE is necessary, because GCC
+    ignores alignment information in pointers and does unsafe optimizations
+    that have shown up as bugs in various places.
+    
+    Signed-off-by: Felix Fietkau <nbd@openwrt.org>
+    
+    SVN-Revision: 39638
+
+--- a/gcc/config/arm/arm.h
+++ b/gcc/config/arm/arm.h
+@@ -150,7 +150,7 @@ extern tree arm_fp16_type_node;
+ /* Thumb-1 only.  */
+ #define TARGET_THUMB1_ONLY		(TARGET_THUMB1 && !arm_arch_notm)
+ 
+-#define TARGET_LDRD			(arm_arch5e && ARM_DOUBLEWORD_ALIGN \
+#define TARGET_LDRD			(arm_arch6 && ARM_DOUBLEWORD_ALIGN \
+                                          && !TARGET_THUMB1)
+ 
+ #define TARGET_CRC32			(arm_arch_crc)
--- a/toolchain/gcc/patches/7.5.0/810-arm-softfloat-libgcc.patch
+++ b/toolchain/gcc/patches/7.5.0/810-arm-softfloat-libgcc.patch
@@ -0,0 +1,33 @@
+commit 8570c4be394cff7282f332f97da2ff569a927ddb
+Author: Imre Kaloz <kaloz@openwrt.org>
+Date:   Wed Feb 2 20:06:12 2011 +0000
+
+    fixup arm soft-float symbols
+    
+    SVN-Revision: 25325
+
+--- a/libgcc/config/arm/t-linux
+++ b/libgcc/config/arm/t-linux
+@@ -1,6 +1,10 @@
+ LIB1ASMSRC = arm/lib1funcs.S
+ LIB1ASMFUNCS = _udivsi3 _divsi3 _umodsi3 _modsi3 _dvmd_lnx _clzsi2 _clzdi2 \
+-	_ctzsi2 _arm_addsubdf3 _arm_addsubsf3
+	_ctzsi2 _arm_addsubdf3 _arm_addsubsf3 \
+	_arm_negdf2 _arm_muldivdf3 _arm_cmpdf2 _arm_unorddf2 \
+	_arm_fixdfsi _arm_fixunsdfsi _arm_truncdfsf2 \
+	_arm_negsf2 _arm_muldivsf3 _arm_cmpsf2 _arm_unordsf2 \
+	_arm_fixsfsi _arm_fixunssfsi
+ 
+ # Just for these, we omit the frame pointer since it makes such a big
+ # difference.
+--- a/gcc/config/arm/linux-elf.h
+++ b/gcc/config/arm/linux-elf.h
+@@ -58,8 +58,6 @@
+    %{shared:-lc} \
+    %{!shared:%{profile:-lc_p}%{!profile:-lc}}"
+ 
+-#define LIBGCC_SPEC "%{mfloat-abi=soft*:-lfloat} -lgcc"
+-
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
+ 
+ #define LINUX_TARGET_LINK_SPEC  "%{h*} \
--- a/toolchain/gcc/patches/7.5.0/820-libgcc_pic.patch
+++ b/toolchain/gcc/patches/7.5.0/820-libgcc_pic.patch
@@ -0,0 +1,44 @@
+commit c96312958c0621e72c9b32da5bc224ffe2161384
+Author: Felix Fietkau <nbd@openwrt.org>
+Date:   Mon Oct 19 23:26:09 2009 +0000
+
+    gcc: create a proper libgcc_pic.a static library for relinking (4.3.3+ for now, backport will follow)
+    
+    SVN-Revision: 18086
+
+--- a/libgcc/Makefile.in
+++ b/libgcc/Makefile.in
+@@ -920,11 +920,12 @@ $(libgcov-driver-objects): %$(objext): $
+ 
+ # Static libraries.
+ libgcc.a: $(libgcc-objects)
+libgcc_pic.a: $(libgcc-s-objects)
+ libgcov.a: $(libgcov-objects)
+ libunwind.a: $(libunwind-objects)
+ libgcc_eh.a: $(libgcc-eh-objects)
+ 
+-libgcc.a libgcov.a libunwind.a libgcc_eh.a:
+libgcc.a libgcov.a libunwind.a libgcc_eh.a libgcc_pic.a:
+ 	-rm -f $@
+ 
+ 	objects="$(objects)";					\
+@@ -945,7 +946,7 @@ all: libunwind.a
+ endif
+ 
+ ifeq ($(enable_shared),yes)
+-all: libgcc_eh.a libgcc_s$(SHLIB_EXT)
+all: libgcc_eh.a libgcc_pic.a libgcc_s$(SHLIB_EXT)
+ ifneq ($(LIBUNWIND),)
+ all: libunwind$(SHLIB_EXT)
+ libgcc_s$(SHLIB_EXT): libunwind$(SHLIB_EXT)
+@@ -1151,6 +1152,10 @@ install-shared:
+ 	chmod 644 $(DESTDIR)$(inst_libdir)/libgcc_eh.a
+ 	$(RANLIB) $(DESTDIR)$(inst_libdir)/libgcc_eh.a
+ 
+	$(INSTALL_DATA) libgcc_pic.a $(mapfile) $(DESTDIR)$(inst_libdir)/
+	chmod 644 $(DESTDIR)$(inst_libdir)/libgcc_pic.a
+	$(RANLIB) $(DESTDIR)$(inst_libdir)/libgcc_pic.a
+
+ 	$(subst @multilib_dir@,$(MULTIDIR),$(subst \
+ 		@shlib_base_name@,libgcc_s,$(subst \
+ 		@shlib_slibdir_qual@,$(MULTIOSSUBDIR),$(SHLIB_INSTALL))))
--- a/toolchain/gcc/patches/7.5.0/840-armv4_pass_fix-v4bx_to_ld.patch
+++ b/toolchain/gcc/patches/7.5.0/840-armv4_pass_fix-v4bx_to_ld.patch
@@ -0,0 +1,28 @@
+commit 7edc8ca5456d9743dd0075eb3cc5b04f4f24c8cc
+Author: Imre Kaloz <kaloz@openwrt.org>
+Date:   Wed Feb 2 19:34:36 2011 +0000
+
+    add armv4 fixup patches
+    
+    SVN-Revision: 25322
+
+
+--- a/gcc/config/arm/linux-eabi.h
+++ b/gcc/config/arm/linux-eabi.h
+@@ -88,10 +88,15 @@
+ #define MUSL_DYNAMIC_LINKER \
+   "/lib/ld-musl-arm" MUSL_DYNAMIC_LINKER_E "%{mfloat-abi=hard:hf}.so.1"
+ 
+/* For armv4 we pass --fix-v4bx to linker to support EABI */
+#undef TARGET_FIX_V4BX_SPEC
+#define TARGET_FIX_V4BX_SPEC " %{mcpu=arm8|mcpu=arm810|mcpu=strongarm*"\
+  "|march=armv4|mcpu=fa526|mcpu=fa626:--fix-v4bx}"
+
+ /* At this point, bpabi.h will have clobbered LINK_SPEC.  We want to
+    use the GNU/Linux version, not the generic BPABI version.  */
+ #undef  LINK_SPEC
+-#define LINK_SPEC EABI_LINK_SPEC					\
+#define LINK_SPEC EABI_LINK_SPEC TARGET_FIX_V4BX_SPEC			\
+   LINUX_OR_ANDROID_LD (LINUX_TARGET_LINK_SPEC,				\
+ 		       LINUX_TARGET_LINK_SPEC " " ANDROID_LINK_SPEC)
+ 
--- a/toolchain/gcc/patches/7.5.0/850-use_shared_libgcc.patch
+++ b/toolchain/gcc/patches/7.5.0/850-use_shared_libgcc.patch
@@ -0,0 +1,54 @@
+commit dcfc40358b5a3cae7320c17f8d1cebd5ad5540cd
+Author: Felix Fietkau <nbd@openwrt.org>
+Date:   Sun Feb 12 20:25:47 2012 +0000
+
+    gcc 4.6: port over the missing patch 850-use_shared_libgcc.patch to prevent libgcc crap from leaking into every single binary
+    
+    SVN-Revision: 30486
+--- a/gcc/config/arm/linux-eabi.h
+++ b/gcc/config/arm/linux-eabi.h
+@@ -126,10 +126,6 @@
+   "%{Ofast|ffast-math|funsafe-math-optimizations:crtfastmath.o%s} "	\
+   LINUX_OR_ANDROID_LD (GNU_USER_TARGET_ENDFILE_SPEC, ANDROID_ENDFILE_SPEC)
+ 
+-/* Use the default LIBGCC_SPEC, not the version in linux-elf.h, as we
+-   do not use -lfloat.  */
+-#undef LIBGCC_SPEC
+-
+ /* Clear the instruction cache from `beg' to `end'.  This is
+    implemented in lib1funcs.S, so ensure an error if this definition
+    is used.  */
+--- a/gcc/config/linux.h
+++ b/gcc/config/linux.h
+@@ -53,6 +53,10 @@ see the files COPYING3 and COPYING.RUNTI
+ 	builtin_assert ("system=posix");			\
+     } while (0)
+ 
+#ifndef LIBGCC_SPEC
+#define LIBGCC_SPEC "%{static|static-libgcc:-lgcc}%{!static:%{!static-libgcc:-lgcc_s}}"
+#endif
+
+ /* Determine which dynamic linker to use depending on whether GLIBC or
+    uClibc or Bionic or musl is the default C library and whether
+    -muclibc or -mglibc or -mbionic or -mmusl has been passed to change
+--- a/libgcc/mkmap-symver.awk
+++ b/libgcc/mkmap-symver.awk
+@@ -136,5 +136,5 @@ function output(lib) {
+   else if (inherit[lib])
+     printf("} %s;\n", inherit[lib]);
+   else
+-    printf ("\n  local:\n\t*;\n};\n");
+    printf ("\n\t*;\n};\n");
+ }
+--- a/gcc/config/rs6000/linux.h
+++ b/gcc/config/rs6000/linux.h
+@@ -60,6 +60,9 @@
+ #undef	CPP_OS_DEFAULT_SPEC
+ #define CPP_OS_DEFAULT_SPEC "%(cpp_os_linux)"
+ 
+#undef LIBGCC_SPEC
+#define LIBGCC_SPEC "%{!static:%{!static-libgcc:-lgcc_s}} -lgcc"
+
+ #undef  LINK_SHLIB_SPEC
+ #define LINK_SHLIB_SPEC "%{shared:-shared} %{!shared: %{static:-static}}"
+ 
--- a/toolchain/gcc/patches/7.5.0/851-libgcc_no_compat.patch
+++ b/toolchain/gcc/patches/7.5.0/851-libgcc_no_compat.patch
@@ -0,0 +1,22 @@
+commit 64661de100da1ec1061ef3e5e400285dce115e6b
+Author: Felix Fietkau <nbd@openwrt.org>
+Date:   Sun May 10 13:16:35 2015 +0000
+
+    gcc: add some size optimization patches
+    
+    Signed-off-by: Felix Fietkau <nbd@openwrt.org>
+    
+    SVN-Revision: 45664
+
+--- a/libgcc/config/t-libunwind
+++ b/libgcc/config/t-libunwind
+@@ -2,8 +2,7 @@
+ 
+ HOST_LIBGCC2_CFLAGS += -DUSE_GAS_SYMVER
+ 
+-LIB2ADDEH = $(srcdir)/unwind-sjlj.c $(srcdir)/unwind-c.c \
+-  $(srcdir)/unwind-compat.c $(srcdir)/unwind-dw2-fde-compat.c
+LIB2ADDEH = $(srcdir)/unwind-sjlj.c $(srcdir)/unwind-c.c
+ LIB2ADDEHSTATIC = $(srcdir)/unwind-sjlj.c $(srcdir)/unwind-c.c
+ 
+ # Override the default value from t-slibgcc-elf-ver and mention -lunwind
--- a/toolchain/gcc/patches/7.5.0/870-ppc_no_crtsavres.patch
+++ b/toolchain/gcc/patches/7.5.0/870-ppc_no_crtsavres.patch
@@ -0,0 +1,18 @@
+commit d8c570a1531035c3e26bcd94741e5f5b9c36b5d9
+Author: Felix Fietkau <nbd@openwrt.org>
+Date:   Mon Mar 5 00:51:01 2012 +0000
+
+    gcc: do not emit references to _savegpr_* and _restgpr_* on powerpc, as they are tricky to deal with wrt. libgcc. they cannot be linked dynamically
+    
+    SVN-Revision: 30814
+--- a/gcc/config/rs6000/rs6000.c
+++ b/gcc/config/rs6000/rs6000.c
+@@ -26981,7 +26981,7 @@ rs6000_savres_strategy (rs6000_stack_t *
+   /* Define cutoff for using out-of-line functions to save registers.  */
+   if (DEFAULT_ABI == ABI_V4 || TARGET_ELF)
+     {
+-      if (!optimize_size)
+      if (1)
+ 	{
+ 	  strategy |= SAVE_INLINE_FPRS | REST_INLINE_FPRS;
+ 	  strategy |= SAVE_INLINE_GPRS | REST_INLINE_GPRS;
--- a/toolchain/gcc/patches/7.5.0/881-no_tm_section.patch
+++ b/toolchain/gcc/patches/7.5.0/881-no_tm_section.patch
@@ -0,0 +1,22 @@
+commit 565988ab47bd9b96b50608564aee2104aeb4b7ae
+Author: Felix Fietkau <nbd@nbd.name>
+Date:   Tue Dec 13 14:20:49 2016 +0100
+
+    gcc: rip out transactional memory related bloat from crtbegin
+    
+    Slightly improves compression for each executable, saving about 4k from
+    the default ar71xx rootfs
+    
+    Signed-off-by: Felix Fietkau <nbd@nbd.name>
+
+--- a/libgcc/crtstuff.c
+++ b/libgcc/crtstuff.c
+@@ -152,7 +152,7 @@ call_ ## FUNC (void)					\
+ #endif
+ 
+ #if !defined(USE_TM_CLONE_REGISTRY) && defined(OBJECT_FORMAT_ELF)
+-# define USE_TM_CLONE_REGISTRY 1
+# define USE_TM_CLONE_REGISTRY 0
+ #endif
+ 
+ /* We do not want to add the weak attribute to the declarations of these
--- a/toolchain/gcc/patches/7.5.0/900-bad-mips16-crt.patch
+++ b/toolchain/gcc/patches/7.5.0/900-bad-mips16-crt.patch
@@ -0,0 +1,30 @@
+commit 9dc38e48f7a6f88b7ac7bfaced91f53660204e46
+Author: Florian Fainelli <florian@openwrt.org>
+Date:   Fri Apr 5 12:36:06 2013 +0000
+
+    toolchain/gcc: .init and .fini need to pick one ISA
+    
+    The .init and .fini sections are built by concatenating code
+    fragments. Putting mips16 code in the middle of a mips32 code block
+    doesn't work. Make gcc built the magic crt stuff in no-mips16 mode.
+    
+    This is specific to 4.6-linaro but is probably portable to other gcc
+    flavors. Adding this to the t-libgcc-mips16 makefile fragment is a
+    hack not suitable for pushing upstream, but there is no mips/t-linux
+    or mips/t-uclibc and I am not going to touch gcc/configure for two
+    lines.
+    
+    Signed-off-by: Jay Carlson <nop@nop.com>
+    Signed-off-by: Florian Fainelli <florian@openwrt.org>
+    
+    SVN-Revision: 36200
+
+--- a/libgcc/config/mips/t-mips16
+++ b/libgcc/config/mips/t-mips16
+@@ -43,3 +43,6 @@ SYNC_CFLAGS = -mno-mips16
+ 
+ # Version these symbols if building libgcc.so.
+ SHLIB_MAPFILES += $(srcdir)/config/mips/libgcc-mips16.ver
+
+CRTSTUFF_T_CFLAGS += -mno-mips16
+CRTSTUFF_T_CFLAGS_S += -mno-mips16
--- a/toolchain/gcc/patches/7.5.0/910-mbsd_multi.patch
+++ b/toolchain/gcc/patches/7.5.0/910-mbsd_multi.patch
@@ -0,0 +1,146 @@
+commit 99368862e44740ff4fd33760893f04e14f9dbdf1
+Author: Felix Fietkau <nbd@openwrt.org>
+Date:   Tue Jul 31 00:52:27 2007 +0000
+
+    Port the mbsd_multi patch from freewrt, which adds -fhonour-copts. This will emit warnings in packages that don't use our target cflags properly
+    
+    SVN-Revision: 8256
+
+	This patch brings over a feature from MirBSD:
+	* -fhonour-copts
+	  If this option is not given, it's warned (depending
+	  on environment variables). This is to catch errors
+	  of misbuilt packages which override CFLAGS themselves.
+
+	This patch was authored by Thorsten Glaser <tg at mirbsd.de>
+	with copyright assignment to the FSF in effect.
+
+--- a/gcc/c-family/c-opts.c
+++ b/gcc/c-family/c-opts.c
+@@ -108,6 +108,9 @@ static int class_dump_flags;
+ /* Whether any standard preincluded header has been preincluded.  */
+ static bool done_preinclude;
+ 
+/* Check if a port honours COPTS.  */
+static int honour_copts = 0;
+
+ static void handle_OPT_d (const char *);
+ static void set_std_cxx98 (int);
+ static void set_std_cxx11 (int);
+@@ -456,6 +459,12 @@ c_common_handle_option (size_t scode, co
+       flag_no_builtin = !value;
+       break;
+ 
+    case OPT_fhonour_copts:
+      if (c_language == clk_c) {
+        honour_copts++;
+      }
+      break;
+
+     case OPT_fconstant_string_class_:
+       constant_string_class_name = arg;
+       break;
+@@ -1084,6 +1093,47 @@ c_common_init (void)
+       return false;
+     }
+ 
+  if (c_language == clk_c) {
+    char *ev = getenv ("GCC_HONOUR_COPTS");
+    int evv;
+    if (ev == NULL)
+      evv = -1;
+    else if ((*ev == '0') || (*ev == '\0'))
+      evv = 0;
+    else if (*ev == '1')
+      evv = 1;
+    else if (*ev == '2')
+      evv = 2;
+    else if (*ev == 's')
+      evv = -1;
+    else {
+      warning (0, "unknown GCC_HONOUR_COPTS value, assuming 1");
+      evv = 1; /* maybe depend this on something like MIRBSD_NATIVE?  */
+    }
+    if (evv == 1) {
+      if (honour_copts == 0) {
+        error ("someone does not honour COPTS at all in lenient mode");
+        return false;
+      } else if (honour_copts != 1) {
+        warning (0, "someone does not honour COPTS correctly, passed %d times",
+         honour_copts);
+      }
+    } else if (evv == 2) {
+      if (honour_copts == 0) {
+        error ("someone does not honour COPTS at all in strict mode");
+        return false;
+      } else if (honour_copts != 1) {
+        error ("someone does not honour COPTS correctly, passed %d times",
+         honour_copts);
+        return false;
+      }
+    } else if (evv == 0) {
+      if (honour_copts != 1)
+        inform (0, "someone does not honour COPTS correctly, passed %d times",
+         honour_copts);
+    }
+  }
+
+   return true;
+ }
+ 
+--- a/gcc/c-family/c.opt
+++ b/gcc/c-family/c.opt
+@@ -1412,6 +1412,9 @@ C++ ObjC++ Optimization Alias(fexception
+ fhonor-std
+ C++ ObjC++ Ignore Warn(switch %qs is no longer supported)
+ 
+fhonour-copts
+C ObjC C++ ObjC++ RejectNegative
+
+ fhosted
+ C ObjC
+ Assume normal C execution environment.
+--- a/gcc/common.opt
+++ b/gcc/common.opt
+@@ -1510,6 +1510,9 @@ fguess-branch-probability
+ Common Report Var(flag_guess_branch_prob) Optimization
+ Enable guessing of branch probabilities.
+ 
+fhonour-copts
+Common RejectNegative
+
+ ; Nonzero means ignore `#ident' directives.  0 means handle them.
+ ; Generate position-independent code for executables if possible
+ ; On SVR4 targets, it also controls whether or not to emit a
+--- a/gcc/opts.c
+++ b/gcc/opts.c
+@@ -1954,6 +1954,9 @@ common_handle_option (struct gcc_options
+ 			       opts, opts_set, loc, dc);
+       break;
+ 
+    case OPT_fhonour_copts:
+      break;
+
+     case OPT_Wlarger_than_:
+       opts->x_larger_than_size = value;
+       opts->x_warn_larger_than = value != -1;
+--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
+@@ -6572,6 +6572,17 @@ This option is only supported for C and
+ @option{-Wall} and by @option{-Wpedantic}, which can be disabled with
+ @option{-Wno-pointer-sign}.
+ 
+@item -fhonour-copts
+@opindex fhonour-copts
+If @env{GCC_HONOUR_COPTS} is set to 1, abort if this option is not
+given at least once, and warn if it is given more than once.
+If @env{GCC_HONOUR_COPTS} is set to 2, abort if this option is not
+given exactly once.
+If @env{GCC_HONOUR_COPTS} is set to 0 or unset, warn if this option
+is not given exactly once.
+The warning is quelled if @env{GCC_HONOUR_COPTS} is set to @samp{s}.
+This flag and environment variable only affect the C language.
+
+ @item -Wstack-protector
+ @opindex Wstack-protector
+ @opindex Wno-stack-protector
--- a/toolchain/gcc/patches/7.5.0/920-specs_nonfatal_getenv.patch
+++ b/toolchain/gcc/patches/7.5.0/920-specs_nonfatal_getenv.patch
@@ -0,0 +1,22 @@
+Author: Jo-Philipp Wich <jow@openwrt.org>
+Date:   Sat Apr 21 03:02:39 2012 +0000
+
+    gcc: add patch to make the getenv() spec function nonfatal if requested environment variable is unset
+    
+    SVN-Revision: 31390
+
+--- a/gcc/gcc.c
+++ b/gcc/gcc.c
+@@ -9281,8 +9281,10 @@ getenv_spec_function (int argc, const ch
+     value = varname;
+ 
+   if (!value)
+-    fatal_error (input_location,
+-		 "environment variable %qs not defined", varname);
+    {
+      warning (input_location, "environment variable %qs not defined", varname);
+      value = "";
+    }
+ 
+   /* We have to escape every character of the environment variable so
+      they are not interpreted as active spec characters.  A
--- a/toolchain/gcc/patches/7.5.0/930-fix-mips-noexecstack.patch
+++ b/toolchain/gcc/patches/7.5.0/930-fix-mips-noexecstack.patch
@@ -0,0 +1,111 @@
+From da45b3fde60095756f5f6030f6012c23a3d34429 Mon Sep 17 00:00:00 2001
+From: Andrew McDonnell <bugs@andrewmcdonnell.net>
+Date: Fri, 3 Oct 2014 19:09:00 +0930
+Subject: Add .note.GNU-stack section
+
+See http://lists.busybox.net/pipermail/uclibc/2014-October/048671.html
+Below copied from https://gcc.gnu.org/ml/gcc-patches/2014-09/msg02430.html
+
+Re: [Patch, MIPS] Add .note.GNU-stack section
+
+    From: Steve Ellcey <sellcey at mips dot com>
+
+On Wed, 2014-09-10 at 10:15 -0700, Eric Christopher wrote:
+>
+>
+> On Wed, Sep 10, 2014 at 9:27 AM, <pinskia@gmail.com> wrote:
+
+>         This works except you did not update the assembly files in
+>         libgcc or glibc. We (Cavium) have the same patch in our tree
+>         for a few released versions.
+
+> Mind just checking yours in then Andrew?
+
+> Thanks!
+> -eric
+
+I talked to Andrew about what files he changed in GCC and created and
+tested this new patch.  Andrew also mentioned changing some assembly
+files in glibc but I don't see any use of '.section .note.GNU-stack' in
+any assembly files in glibc (for any platform) so I wasn't planning on
+creating a glibc to add them to mips glibc assembly language files.
+
+OK to check in this patch?
+
+Steve Ellcey
+sellcey@mips.com
+
+
+
+2014-09-26  Steve Ellcey  <sellcey@mips.com>
+---
+ gcc/config/mips/mips.c          | 3 +++
+ libgcc/config/mips/crti.S       | 4 ++++
+ libgcc/config/mips/crtn.S       | 3 +++
+ libgcc/config/mips/mips16.S     | 4 ++++
+ libgcc/config/mips/vr4120-div.S | 4 ++++
+ 5 files changed, 18 insertions(+)
+
+--- a/gcc/config/mips/mips.c
+++ b/gcc/config/mips/mips.c
+@@ -22567,6 +22567,9 @@ mips_promote_function_mode (const_tree t
+ #undef TARGET_CUSTOM_FUNCTION_DESCRIPTORS
+ #define TARGET_CUSTOM_FUNCTION_DESCRIPTORS 2
+ 
+#undef TARGET_ASM_FILE_END
+#define TARGET_ASM_FILE_END file_end_indicate_exec_stack
+
+ struct gcc_target targetm = TARGET_INITIALIZER;
+ 
+ #include "gt-mips.h"
+--- a/libgcc/config/mips/crti.S
+++ b/libgcc/config/mips/crti.S
+@@ -21,6 +21,10 @@ a copy of the GCC Runtime Library Except
+ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+ <http://www.gnu.org/licenses/>.  */
+ 
+
+/* An executable stack is *not* required for these functions.  */
+	.section .note.GNU-stack,"",%progbits
+
+ /* 4 slots for argument spill area.  1 for cpreturn, 1 for stack.
+    Return spill offset of 40 and 20.  Aligned to 16 bytes for n32.  */
+ 
+--- a/libgcc/config/mips/crtn.S
+++ b/libgcc/config/mips/crtn.S
+@@ -21,6 +21,9 @@ a copy of the GCC Runtime Library Except
+ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+ <http://www.gnu.org/licenses/>.  */
+ 
+/* An executable stack is *not* required for these functions.  */
+	.section .note.GNU-stack,"",%progbits
+
+ /* 4 slots for argument spill area.  1 for cpreturn, 1 for stack.
+    Return spill offset of 40 and 20.  Aligned to 16 bytes for n32.  */
+ 
+--- a/libgcc/config/mips/mips16.S
+++ b/libgcc/config/mips/mips16.S
+@@ -48,6 +48,10 @@ see the files COPYING3 and COPYING.RUNTI
+    values using the soft-float calling convention, but do the actual
+    operation using the hard floating point instructions.  */
+ 
+/* An executable stack is *not* required for these functions.  */
+	.section .note.GNU-stack,"",%progbits
+	.previous
+
+ #if defined _MIPS_SIM && (_MIPS_SIM == _ABIO32 || _MIPS_SIM == _ABIO64)
+ 
+ /* This file contains 32-bit assembly code.  */
+--- a/libgcc/config/mips/vr4120-div.S
+++ b/libgcc/config/mips/vr4120-div.S
+@@ -26,6 +26,10 @@ see the files COPYING3 and COPYING.RUNTI
+    -mfix-vr4120.  div and ddiv do not give the correct result when one
+    of the operands is negative.  */
+ 
+/* An executable stack is *not* required for these functions.  */
+	.section .note.GNU-stack,"",%progbits
+	.previous
+
+ 	.set	nomips16
+ 
+ #define DIV								\
--- a/toolchain/gcc/patches/7.5.0/931-libffi-fix-MIPS-softfloat-build-issue.patch
+++ b/toolchain/gcc/patches/7.5.0/931-libffi-fix-MIPS-softfloat-build-issue.patch
@@ -0,0 +1,175 @@
+From c0c62fa4256f805389f16ebfc4a60cf789129b50 Mon Sep 17 00:00:00 2001
+From: BangLang Huang <banglang.huang@foxmail.com>
+Date: Wed, 9 Nov 2016 10:36:49 +0800
+Subject: [PATCH] libffi: fix MIPS softfloat build issue
+
+Backported from github.com/libffi/libffi#272
+
+Signed-off-by: BangLang Huang <banglang.huang@foxmail.com>
+Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
+---
+ libffi/src/mips/n32.S | 17 +++++++++++++++++
+ libffi/src/mips/o32.S | 17 +++++++++++++++++
+ 2 files changed, 34 insertions(+)
+
+diff --git a/libffi/src/mips/n32.S b/libffi/src/mips/n32.S
+index c6985d30a6f..8f25994773c 100644
+--- a/libffi/src/mips/n32.S
+++ b/libffi/src/mips/n32.S
+@@ -107,6 +107,16 @@ loadregs:
+ 
+ 	REG_L	t6, 3*FFI_SIZEOF_ARG($fp)  # load the flags word into t6.
+ 
+#ifdef __mips_soft_float
+	REG_L	a0, 0*FFI_SIZEOF_ARG(t9)
+	REG_L	a1, 1*FFI_SIZEOF_ARG(t9)
+	REG_L	a2, 2*FFI_SIZEOF_ARG(t9)
+	REG_L	a3, 3*FFI_SIZEOF_ARG(t9)
+	REG_L	a4, 4*FFI_SIZEOF_ARG(t9)
+	REG_L	a5, 5*FFI_SIZEOF_ARG(t9)
+	REG_L	a6, 6*FFI_SIZEOF_ARG(t9)
+	REG_L	a7, 7*FFI_SIZEOF_ARG(t9)
+#else
+ 	and	t4, t6, ((1<<FFI_FLAG_BITS)-1)
+ 	REG_L	a0, 0*FFI_SIZEOF_ARG(t9)
+ 	beqz	t4, arg1_next
+@@ -193,6 +203,7 @@ arg7_next:
+ arg8_doublep:	
+  	l.d	$f19, 7*FFI_SIZEOF_ARG(t9)	
+ arg8_next:	
+#endif
+ 
+ callit:		
+ 	# Load the function pointer
+@@ -214,6 +225,7 @@ retint:
+ 	b	epilogue
+ 
+ retfloat:
+#ifndef __mips_soft_float
+ 	bne     t6, FFI_TYPE_FLOAT, retdouble
+ 	jal	t9
+ 	REG_L	t4, 4*FFI_SIZEOF_ARG($fp)
+@@ -272,6 +284,7 @@ retstruct_f_d:
+ 	s.s	$f0, 0(t4)
+ 	s.d	$f2, 8(t4)
+ 	b	epilogue
+#endif
+ 
+ retstruct_d_soft:
+ 	bne	t6, FFI_TYPE_STRUCT_D_SOFT, retstruct_f_soft
+@@ -429,6 +442,7 @@ ffi_closure_N32:
+ 	REG_S	a6, A6_OFF2($sp)
+ 	REG_S	a7, A7_OFF2($sp)
+ 
+#ifndef __mips_soft_float
+ 	# Store all possible float/double registers.
+ 	s.d	$f12, F12_OFF2($sp)
+ 	s.d	$f13, F13_OFF2($sp)
+@@ -438,6 +452,7 @@ ffi_closure_N32:
+ 	s.d	$f17, F17_OFF2($sp)
+ 	s.d	$f18, F18_OFF2($sp)
+ 	s.d	$f19, F19_OFF2($sp)
+#endif
+ 
+ 	# Call ffi_closure_mips_inner_N32 to do the real work.
+ 	LA	t9, ffi_closure_mips_inner_N32
+@@ -458,6 +473,7 @@ cls_retint:
+ 	b	cls_epilogue
+ 
+ cls_retfloat:
+#ifndef __mips_soft_float
+ 	bne     v0, FFI_TYPE_FLOAT, cls_retdouble
+ 	l.s	$f0, V0_OFF2($sp)
+ 	b	cls_epilogue
+@@ -500,6 +516,7 @@ cls_retstruct_f_d:
+ 	l.s	$f0, V0_OFF2($sp)
+ 	l.d	$f2, V1_OFF2($sp)
+ 	b	cls_epilogue
+#endif
+ 	
+ cls_retstruct_small2:	
+ 	REG_L	v0, V0_OFF2($sp)
+diff --git a/libffi/src/mips/o32.S b/libffi/src/mips/o32.S
+index eb279813a76..1aff4b14814 100644
+--- a/libffi/src/mips/o32.S
+++ b/libffi/src/mips/o32.S
+@@ -82,13 +82,16 @@ sixteen:
+ 		
+ 	ADDU	$sp, 4 * FFI_SIZEOF_ARG		# adjust $sp to new args
+ 
+#ifndef __mips_soft_float
+ 	bnez	t0, pass_d			# make it quick for int
+#endif
+ 	REG_L	a0, 0*FFI_SIZEOF_ARG($sp)	# just go ahead and load the
+ 	REG_L	a1, 1*FFI_SIZEOF_ARG($sp)	# four regs.
+ 	REG_L	a2, 2*FFI_SIZEOF_ARG($sp)
+ 	REG_L	a3, 3*FFI_SIZEOF_ARG($sp)
+ 	b	call_it
+ 
+#ifndef __mips_soft_float
+ pass_d:
+ 	bne	t0, FFI_ARGS_D, pass_f
+ 	l.d	$f12, 0*FFI_SIZEOF_ARG($sp)	# load $fp regs from args
+@@ -130,6 +133,7 @@ pass_f_d:
+  #	bne	t0, FFI_ARGS_F_D, call_it
+ 	l.s	$f12, 0*FFI_SIZEOF_ARG($sp)	# load $fp regs from args
+ 	l.d	$f14, 2*FFI_SIZEOF_ARG($sp)	# passing double and float
+#endif
+ 
+ call_it:	
+ 	# Load the function pointer
+@@ -158,14 +162,23 @@ retfloat:
+ 	bne     t2, FFI_TYPE_FLOAT, retdouble
+ 	jalr	t9
+ 	REG_L	t0, SIZEOF_FRAME + 4*FFI_SIZEOF_ARG($fp)
+#ifndef __mips_soft_float
+ 	s.s	$f0, 0(t0)
+#else
+	REG_S v0, 0(t0)
+#endif
+ 	b	epilogue
+ 
+ retdouble:	
+ 	bne	t2, FFI_TYPE_DOUBLE, noretval
+ 	jalr	t9
+ 	REG_L	t0, SIZEOF_FRAME + 4*FFI_SIZEOF_ARG($fp)
+#ifndef __mips_soft_float
+ 	s.d	$f0, 0(t0)
+#else
+	REG_S v1, 4(t0)
+	REG_S v0, 0(t0)
+#endif
+ 	b	epilogue
+ 	
+ noretval:	
+@@ -261,9 +274,11 @@ $LCFI7:
+ 	li	$13, 1		# FFI_O32
+ 	bne	$16, $13, 1f	# Skip fp save if FFI_O32_SOFT_FLOAT
+ 	
+#ifndef __mips_soft_float
+ 	# Store all possible float/double registers.
+ 	s.d	$f12, FA_0_0_OFF2($fp)
+ 	s.d	$f14, FA_1_0_OFF2($fp)
+#endif
+ 1:	
+ 	# Call ffi_closure_mips_inner_O32 to do the work.
+ 	la	t9, ffi_closure_mips_inner_O32
+@@ -281,6 +296,7 @@ $LCFI7:
+ 	li	$13, 1		# FFI_O32
+ 	bne	$16, $13, 1f	# Skip fp restore if FFI_O32_SOFT_FLOAT
+ 
+#ifndef __mips_soft_float
+ 	li	$9, FFI_TYPE_FLOAT
+ 	l.s	$f0, V0_OFF2($fp)
+ 	beq	$8, $9, closure_done
+@@ -288,6 +304,7 @@ $LCFI7:
+ 	li	$9, FFI_TYPE_DOUBLE
+ 	l.d	$f0, V0_OFF2($fp)
+ 	beq	$8, $9, closure_done
+#endif
+ 1:	
+ 	REG_L	$3, V1_OFF2($fp)
+ 	REG_L	$2, V0_OFF2($fp)
+-- 
+2.16.3
+
--- a/toolchain/gcc/patches/7.5.0/940-no-clobber-stamp-bits.patch
+++ b/toolchain/gcc/patches/7.5.0/940-no-clobber-stamp-bits.patch
@@ -0,0 +1,33 @@
+commit 548d9a008ff265e9eaa3c7e0e6e301c6bd5645e6
+Author: Felix Fietkau <nbd@openwrt.org>
+Date:   Fri Dec 12 17:01:57 2014 +0000
+
+    gcc: don't clobber stamp-bits with a symlink to itself
+    
+    Several versions of gcc have an issue in libstdc++v3 where the build may
+    clobber stamp-bits with a link to itself.  This doesn't manifest itself
+    on all systems.  On several Ubuntu systems, this doesn't appear to be a
+    problem, but it is an issue on Fedora 16 systems.
+    
+    To fix the issue, we'll simply filter out stamp-bits from the symlinks
+    to be generated.
+    
+    Note: gcc 4.4.7 is unaffected by this issue, so no fix is necessary
+    there.
+    
+    Signed-off-by: John Szakmeister <john@szakmeister.net>
+    
+    SVN-Revision: 43669
+
+
+--- a/libstdc++-v3/include/Makefile.in
+++ b/libstdc++-v3/include/Makefile.in
+@@ -1474,7 +1474,7 @@ stamp-bits: ${bits_headers}
+ 	@$(STAMP) stamp-bits
+ 
+ stamp-bits-sup: stamp-bits ${bits_sup_headers}
+-	@-cd ${bits_builddir} && $(LN_S) $? . 2>/dev/null
+	@-cd ${bits_builddir} && $(LN_S) $(filter-out stamp-bits,$?) . 2>/dev/null
+ 	@$(STAMP) stamp-bits-sup
+ 
+ stamp-c_base: ${c_base_headers}
--- a/toolchain/gcc/patches/7.5.0/950-cpp_file_path_translation.patch
+++ b/toolchain/gcc/patches/7.5.0/950-cpp_file_path_translation.patch
@@ -0,0 +1,181 @@
+commit 331735a357a73c7b8adc205241ac3cc6543d985e
+Author: Felix Fietkau <nbd@openwrt.org>
+Date:   Tue Nov 17 12:38:22 2015 +0000
+
+    gcc: add a patch to 5.x that supports translation of __FILE__ paths
+    
+    Signed-off-by: Felix Fietkau <nbd@openwrt.org>
+    
+    SVN-Revision: 47490
+
+Forward ported from attachment to https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47047
+
+--- a/gcc/c-family/c-opts.c
+++ b/gcc/c-family/c-opts.c
+@@ -588,6 +588,10 @@ c_common_handle_option (size_t scode, co
+       add_path (xstrdup (arg), SYSTEM, 0, true);
+       break;
+ 
+    case OPT_iremap:
+      add_cpp_remap_path (arg);
+      break;
+
+     case OPT_iwithprefix:
+       add_prefixed_path (arg, SYSTEM);
+       break;
+--- a/gcc/c-family/c.opt
+++ b/gcc/c-family/c.opt
+@@ -1825,6 +1825,10 @@ iquote
+ C ObjC C++ ObjC++ Joined Separate MissingArgError(missing path after %qs)
+ -iquote <dir>	Add <dir> to the end of the quote include path.
+ 
+iremap
+C ObjC C++ ObjC++ Joined Separate
+-iremap <src:dst>  Convert <src> to <dst> if it occurs as prefix in __FILE__.
+
+ iwithprefix
+ C ObjC C++ ObjC++ Joined Separate
+ -iwithprefix <dir>	Add <dir> to the end of the system include path.
+--- a/gcc/doc/cpp.texi
+++ b/gcc/doc/cpp.texi
+@@ -4272,6 +4272,7 @@ Refer to the GCC manual for full documen
+ @c man begin SYNOPSIS
+ cpp [@option{-D}@var{macro}[=@var{defn}]@dots{}] [@option{-U}@var{macro}]
+     [@option{-I}@var{dir}@dots{}] [@option{-iquote}@var{dir}@dots{}]
+    [@option{-iremap}@var{src}:@var{dst}]
+     [@option{-M}|@option{-MM}] [@option{-MG}] [@option{-MF} @var{filename}]
+     [@option{-MP}] [@option{-MQ} @var{target}@dots{}]
+     [@option{-MT} @var{target}@dots{}]
+--- a/gcc/doc/cppopts.texi
+++ b/gcc/doc/cppopts.texi
+@@ -220,6 +220,12 @@ extensions @samp{.i}, @samp{.ii} or @sam
+ extensions that GCC uses for preprocessed files created by
+ @option{-save-temps}.
+ 
+@item -iremap @var{src}:@var{dst}
+@opindex iremap
+Replace the prefix @var{src} in __FILE__ with @var{dst} at expansion time.
+This option can be specified more than once.  Processing stops at the first
+match.
+
+ @item -fdirectives-only
+ @opindex fdirectives-only
+ When preprocessing, handle directives, but do not expand macros.
+--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
+@@ -11871,6 +11871,12 @@ by @option{-fplugin=@var{name}} instead
+ @option{-fplugin=@var{path}/@var{name}.so}.  This option is not meant
+ to be used by the user, but only passed by the driver.
+ 
+@item -iremap @var{src}:@var{dst}
+@opindex iremap
+Replace the prefix @var{src} in __FILE__ with @var{dst} at expansion time.
+This option can be specified more than once.  Processing stops at the first
+match.
+
+ @item -L@var{dir}
+ @opindex L
+ Add directory @var{dir} to the list of directories to be searched
+--- a/libcpp/include/cpplib.h
+++ b/libcpp/include/cpplib.h
+@@ -820,6 +820,9 @@ extern void cpp_set_lang (cpp_reader *,
+ /* Set the include paths.  */
+ extern void cpp_set_include_chains (cpp_reader *, cpp_dir *, cpp_dir *, int);
+ 
+/* Provide src:dst pair for __FILE__ remapping.  */
+extern void add_cpp_remap_path (const char *);
+
+ /* Call these to get pointers to the options, callback, and deps
+    structures for a given reader.  These pointers are good until you
+    call cpp_finish on that reader.  You can either edit the callbacks
+--- a/libcpp/macro.c
+++ b/libcpp/macro.c
+@@ -227,6 +227,64 @@ static const char * const monthnames[] =
+   "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
+ };
+ 
+static size_t remap_pairs;
+static char **remap_src;
+static char **remap_dst;
+
+void
+add_cpp_remap_path (const char *arg)
+{
+  const char *arg_dst;
+  size_t len;
+
+  arg_dst = strchr(arg, ':');
+  if (arg_dst == NULL)
+    {
+      fprintf(stderr, "Invalid argument for -iremap\n");
+      exit(1);
+    }
+
+  len = arg_dst - arg;
+  ++arg_dst;
+
+  remap_src = (char **) xrealloc(remap_src, sizeof(char *) * (remap_pairs + 1));
+  remap_dst = (char **) xrealloc(remap_dst, sizeof(char *) * (remap_pairs + 1));
+
+  remap_src[remap_pairs] = (char *) xmalloc(len + 1);
+  memcpy(remap_src[remap_pairs], arg, len);
+  remap_src[remap_pairs][len] = '\0';
+  remap_dst[remap_pairs] = xstrdup(arg_dst);
+  ++remap_pairs;
+}
+
+static const char *
+cpp_remap_file (const char *arg, char **tmp_name)
+{
+  char *result;
+  size_t i, len;
+
+  for (i = 0; i < remap_pairs; ++i)
+    {
+      len = strlen (remap_src[i]);
+      if (strncmp (remap_src[i], arg, len))
+	continue;
+      if (arg[len] == '\0')
+	return xstrdup (remap_dst[i]);
+      if (arg[len] != '/')
+	continue;
+      arg += len;
+      len = strlen (remap_dst[i]);
+      result = (char *) xmalloc (len + strlen (arg) + 1);
+      memcpy(result, remap_dst[i], len);
+      strcpy(result + len, arg);
+      *tmp_name = result;
+
+      return result;
+    }
+
+   return arg;
+}
+
+ /* Helper function for builtin_macro.  Returns the text generated by
+    a builtin macro. */
+ const uchar *
+@@ -290,6 +348,7 @@ _cpp_builtin_macro_text (cpp_reader *pfi
+       {
+ 	unsigned int len;
+ 	const char *name;
+	char *tmp_name = NULL;
+ 	uchar *buf;
+ 	
+ 	if (node->value.builtin == BT_FILE)
+@@ -301,6 +360,7 @@ _cpp_builtin_macro_text (cpp_reader *pfi
+ 	    if (!name)
+ 	      abort ();
+ 	  }
+	name = cpp_remap_file (name, &tmp_name);
+ 	len = strlen (name);
+ 	buf = _cpp_unaligned_alloc (pfile, len * 2 + 3);
+ 	result = buf;
+@@ -308,6 +368,7 @@ _cpp_builtin_macro_text (cpp_reader *pfi
+ 	buf = cpp_quote_string (buf + 1, (const unsigned char *) name, len);
+ 	*buf++ = '"';
+ 	*buf = '\0';
+	free (tmp_name);
+       }
+       break;
+ 
--- a/toolchain/gcc/patches/7.5.0/960-gotools-fix-compilation-when-making-cross-compiler.patch
+++ b/toolchain/gcc/patches/7.5.0/960-gotools-fix-compilation-when-making-cross-compiler.patch
@@ -0,0 +1,73 @@
+From dda6b050cd74a352670787a294596a9c56c21327 Mon Sep 17 00:00:00 2001
+From: Yousong Zhou <yszhou4tech@gmail.com>
+Date: Fri, 4 May 2018 18:20:53 +0800
+Subject: [PATCH] gotools: fix compilation when making cross compiler
+
+libgo is "the runtime support library for the Go programming language.
+This library is intended for use with the Go frontend."
+
+gccgo will link target files with libgo.so which depends on libgcc_s.so.1, but
+the linker will complain that it cannot find it.  That's because shared libgcc
+is not present in the install directory yet.  libgo.so was made without problem
+because gcc will emit -lgcc_s when compiled with -shared option.  When gotools
+were being made, it was supplied with -static-libgcc thus no link option was
+provided.  Check LIBGO in gcc/go/gcc-spec.c for how gccgo make a builtin spec
+for linking with libgo.so
+
+- GccgoCrossCompilation, https://github.com/golang/go/wiki/GccgoCrossCompilation
+- Cross-building instructions, http://www.eglibc.org/archives/patches/msg00078.html
+
+When 3-pass GCC compilation is used, shared libgcc runtime libraries will be
+available after gcc pass2 completed and will meet the gotools link requirement
+at gcc pass3
+---
+ gotools/Makefile.am | 4 +++-
+ gotools/Makefile.in | 4 +++-
+ 2 files changed, 6 insertions(+), 2 deletions(-)
+
+diff --git a/gotools/Makefile.am b/gotools/Makefile.am
+index 5f3940a278b..9c22f5df103 100644
+--- a/gotools/Makefile.am
+++ b/gotools/Makefile.am
+@@ -26,6 +26,7 @@ PWD_COMMAND = $${PWDCMD-pwd}
+ STAMP = echo timestamp >
+ 
+ libgodir = ../$(target_noncanonical)/libgo
+libgccdir = ../$(target_noncanonical)/libgcc
+ LIBGODEP = $(libgodir)/libgo.la
+ 
+ if NATIVE
+@@ -38,7 +39,8 @@ endif
+ GOCFLAGS = $(CFLAGS_FOR_TARGET)
+ GOCOMPILE = $(GOCOMPILER) $(GOCFLAGS)
+ 
+-AM_LDFLAGS = -L $(libgodir) -L $(libgodir)/.libs
+AM_LDFLAGS = -L $(libgodir) -L $(libgodir)/.libs \
+	-L $(libgccdir) -L $(libgccdir)/.libs -lgcc_s
+ GOLINK = $(GOCOMPILER) $(GOCFLAGS) $(AM_GOCFLAGS) $(LDFLAGS) $(AM_LDFLAGS) -o $@
+ 
+ cmdsrcdir = $(srcdir)/../libgo/go/cmd
+diff --git a/gotools/Makefile.in b/gotools/Makefile.in
+index 4386576b011..0bdd9290e01 100644
+--- a/gotools/Makefile.in
+++ b/gotools/Makefile.in
+@@ -252,13 +252,15 @@ mkinstalldirs = $(SHELL) $(toplevel_srcdir)/mkinstalldirs
+ PWD_COMMAND = $${PWDCMD-pwd}
+ STAMP = echo timestamp >
+ libgodir = ../$(target_noncanonical)/libgo
+libgccdir = ../$(target_noncanonical)/libgcc
+ LIBGODEP = $(libgodir)/libgo.la
+ @NATIVE_FALSE@GOCOMPILER = $(GOC)
+ 
+ # Use the compiler we just built.
+ @NATIVE_TRUE@GOCOMPILER = $(GOC_FOR_TARGET) $(XGCC_FLAGS_FOR_TARGET)
+ GOCOMPILE = $(GOCOMPILER) $(GOCFLAGS)
+-AM_LDFLAGS = -L $(libgodir) -L $(libgodir)/.libs
+AM_LDFLAGS = -L $(libgodir) -L $(libgodir)/.libs \
+	-L $(libgccdir) -L $(libgccdir)/.libs -lgcc_s
+ GOLINK = $(GOCOMPILER) $(GOCFLAGS) $(AM_GOCFLAGS) $(LDFLAGS) $(AM_LDFLAGS) -o $@
+ cmdsrcdir = $(srcdir)/../libgo/go/cmd
+ go_cmd_go_files = \
+-- 
+2.16.3
+
--- a/toolchain/gcc/patches/8.3.0/002-case_insensitive.patch
+++ b/toolchain/gcc/patches/8.3.0/002-case_insensitive.patch
@@ -0,0 +1,24 @@
+commit 81cc26c706b2bc8c8c1eb1a322e5c5157900836e
+Author: Felix Fietkau <nbd@openwrt.org>
+Date:   Sun Oct 19 21:45:51 2014 +0000
+
+    gcc: do not assume that the Mac OS X filesystem is case insensitive
+    
+    Signed-off-by: Felix Fietkau <nbd@openwrt.org>
+    
+    SVN-Revision: 42973
+
+--- a/include/filenames.h
+++ b/include/filenames.h
+@@ -43,11 +43,6 @@ extern "C" {
+ #  define IS_DIR_SEPARATOR(c) IS_DOS_DIR_SEPARATOR (c)
+ #  define IS_ABSOLUTE_PATH(f) IS_DOS_ABSOLUTE_PATH (f)
+ #else /* not DOSish */
+-#  if defined(__APPLE__)
+-#    ifndef HAVE_CASE_INSENSITIVE_FILE_SYSTEM
+-#      define HAVE_CASE_INSENSITIVE_FILE_SYSTEM 1
+-#    endif
+-#  endif /* __APPLE__ */
+ #  define HAS_DRIVE_SPEC(f) (0)
+ #  define IS_DIR_SEPARATOR(c) IS_UNIX_DIR_SEPARATOR (c)
+ #  define IS_ABSOLUTE_PATH(f) IS_UNIX_ABSOLUTE_PATH (f)
--- a/toolchain/gcc/patches/8.3.0/010-documentation.patch
+++ b/toolchain/gcc/patches/8.3.0/010-documentation.patch
@@ -0,0 +1,35 @@
+commit 098bd91f5eae625c7d2ee621e10930fc4434e5e2
+Author: Luka Perkov <luka@openwrt.org>
+Date:   Tue Feb 26 16:16:33 2013 +0000
+
+    gcc: don't build documentation
+    
+    This closes #13039.
+    
+    Signed-off-by: Luka Perkov <luka@openwrt.org>
+    
+    SVN-Revision: 35807
+
+--- a/gcc/Makefile.in
+++ b/gcc/Makefile.in
+@@ -3203,18 +3203,10 @@ doc/gcc.info: $(TEXI_GCC_FILES)
+ doc/gccint.info: $(TEXI_GCCINT_FILES)
+ doc/cppinternals.info: $(TEXI_CPPINT_FILES)
+ 
+-doc/%.info: %.texi
+-	if [ x$(BUILD_INFO) = xinfo ]; then \
+-		$(MAKEINFO) $(MAKEINFOFLAGS) -I . -I $(gcc_docdir) \
+-			-I $(gcc_docdir)/include -o $@ $<; \
+-	fi
+doc/%.info:
+ 
+ # Duplicate entry to handle renaming of gccinstall.info
+-doc/gccinstall.info: $(TEXI_GCCINSTALL_FILES)
+-	if [ x$(BUILD_INFO) = xinfo ]; then \
+-		$(MAKEINFO) $(MAKEINFOFLAGS) -I $(gcc_docdir) \
+-			-I $(gcc_docdir)/include -o $@ $<; \
+-	fi
+doc/gccinstall.info:
+ 
+ doc/cpp.dvi: $(TEXI_CPP_FILES)
+ doc/gcc.dvi: $(TEXI_GCC_FILES)
--- a/toolchain/gcc/patches/8.3.0/090-rs6000-PR-89587.patch
+++ b/toolchain/gcc/patches/8.3.0/090-rs6000-PR-89587.patch
@@ -0,0 +1,30 @@
+From 045e60da05ec1d4997864883143a951f152cfc9f Mon Sep 17 00:00:00 2001
+From: jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Tue, 30 Apr 2019 20:37:12 +0000
+Subject: [PATCH] 	Backported from mainline 	2019-03-05  Jakub
+ Jelinek  <jakub@redhat.com>
+
+	PR target/89587
+	* config/rs6000/t-linux (MULTIARCH_DIRNAME): Set to non-empty only
+	if_multiarch.
+
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-8-branch@270720 138bc75d-0d04-0410-961f-82ee72b054a4
+---
+ gcc/ChangeLog             | 4 ++++
+ gcc/config/rs6000/t-linux | 2 +-
+ 2 files changed, 5 insertions(+), 1 deletion(-)
+
+diff --git a/gcc/config/rs6000/t-linux b/gcc/config/rs6000/t-linux
+index acfde1f48aec..aeb7440c4920 100644
+--- a/gcc/config/rs6000/t-linux
+++ b/gcc/config/rs6000/t-linux
+@@ -4,7 +4,7 @@ ifeq (,$(filter $(with_cpu),$(SOFT_FLOAT_CPUS))$(findstring soft,$(with_float)))
+ ifneq (,$(findstring powerpc64,$(target)))
+ MULTILIB_OSDIRNAMES := .=../lib64$(call if_multiarch,:powerpc64-linux-gnu)
+ else
+-MULTIARCH_DIRNAME := powerpc-linux-gnu
+MULTIARCH_DIRNAME := $(call if_multiarch,powerpc-linux-gnu)
+ endif
+ ifneq (,$(findstring powerpcle,$(target)))
+ MULTIARCH_DIRNAME := $(subst -linux,le-linux,$(MULTIARCH_DIRNAME))
--- a/toolchain/gcc/patches/8.3.0/110-Fix-MIPS-PR-84790.patch
+++ b/toolchain/gcc/patches/8.3.0/110-Fix-MIPS-PR-84790.patch
@@ -0,0 +1,20 @@
+Fix https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84790.
+MIPS16 functions have a static assembler prologue which clobbers
+registers v0 and v1. Add these register clobbers to function call
+instructions.
+
+--- a/gcc/config/mips/mips.c
+++ b/gcc/config/mips/mips.c
+@@ -3102,6 +3102,12 @@ mips_emit_call_insn (rtx pattern, rtx or
+       emit_insn (gen_update_got_version ());
+     }
+ 
+  if (TARGET_MIPS16 && TARGET_USE_GOT)
+    {
+      clobber_reg (&CALL_INSN_FUNCTION_USAGE (insn), MIPS16_PIC_TEMP);
+      clobber_reg (&CALL_INSN_FUNCTION_USAGE (insn), MIPS_PROLOGUE_TEMP (word_mode));
+    }
+
+   if (TARGET_MIPS16
+       && TARGET_EXPLICIT_RELOCS
+       && TARGET_CALL_CLOBBERED_GP)
--- a/toolchain/gcc/patches/8.3.0/230-musl_libssp.patch
+++ b/toolchain/gcc/patches/8.3.0/230-musl_libssp.patch
@@ -0,0 +1,13 @@
+--- a/gcc/gcc.c
+++ b/gcc/gcc.c
+@@ -868,7 +868,9 @@ proper position among the other output f
+ #endif
+ 
+ #ifndef LINK_SSP_SPEC
+-#ifdef TARGET_LIBC_PROVIDES_SSP
+#if DEFAULT_LIBC == LIBC_MUSL
+#define LINK_SSP_SPEC "-lssp_nonshared"
+#elif defined(TARGET_LIBC_PROVIDES_SSP)
+ #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all" \
+ 		       "|fstack-protector-strong|fstack-protector-explicit:}"
+ #else
--- a/toolchain/gcc/patches/8.3.0/300-mips_Os_cpu_rtx_cost_model.patch
+++ b/toolchain/gcc/patches/8.3.0/300-mips_Os_cpu_rtx_cost_model.patch
@@ -0,0 +1,21 @@
+commit ecf7671b769fe96f7b5134be442089f8bdba55d2
+Author: Felix Fietkau <nbd@nbd.name>
+Date:   Thu Aug 4 20:29:45 2016 +0200
+
+gcc: add a patch to generate better code with Os on mips
+
+Also happens to reduce compressed code size a bit
+
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+
+--- a/gcc/config/mips/mips.c
+++ b/gcc/config/mips/mips.c
+@@ -19834,7 +19834,7 @@ mips_option_override (void)
+     flag_pcc_struct_return = 0;
+ 
+   /* Decide which rtx_costs structure to use.  */
+-  if (optimize_size)
+  if (0 && optimize_size)
+     mips_cost = &mips_rtx_cost_optimize_size;
+   else
+     mips_cost = &mips_rtx_cost_data[mips_tune];
--- a/toolchain/gcc/patches/8.3.0/800-arm_v5te_no_ldrd_strd.patch
+++ b/toolchain/gcc/patches/8.3.0/800-arm_v5te_no_ldrd_strd.patch
@@ -0,0 +1,11 @@
+--- a/gcc/config/arm/arm.h
+++ b/gcc/config/arm/arm.h
+@@ -155,7 +155,7 @@ extern tree arm_fp16_type_node;
+ /* Thumb-1 only.  */
+ #define TARGET_THUMB1_ONLY		(TARGET_THUMB1 && !arm_arch_notm)
+ 
+-#define TARGET_LDRD			(arm_arch5e && ARM_DOUBLEWORD_ALIGN \
+#define TARGET_LDRD			(arm_arch6 && ARM_DOUBLEWORD_ALIGN \
+                                          && !TARGET_THUMB1)
+ 
+ #define TARGET_CRC32			(arm_arch_crc)
--- a/toolchain/gcc/patches/8.3.0/810-arm-softfloat-libgcc.patch
+++ b/toolchain/gcc/patches/8.3.0/810-arm-softfloat-libgcc.patch
@@ -0,0 +1,33 @@
+commit 8570c4be394cff7282f332f97da2ff569a927ddb
+Author: Imre Kaloz <kaloz@openwrt.org>
+Date:   Wed Feb 2 20:06:12 2011 +0000
+
+    fixup arm soft-float symbols
+    
+    SVN-Revision: 25325
+
+--- a/libgcc/config/arm/t-linux
+++ b/libgcc/config/arm/t-linux
+@@ -1,6 +1,10 @@
+ LIB1ASMSRC = arm/lib1funcs.S
+ LIB1ASMFUNCS = _udivsi3 _divsi3 _umodsi3 _modsi3 _dvmd_lnx _clzsi2 _clzdi2 \
+-	_ctzsi2 _arm_addsubdf3 _arm_addsubsf3
+	_ctzsi2 _arm_addsubdf3 _arm_addsubsf3 \
+	_arm_negdf2 _arm_muldivdf3 _arm_cmpdf2 _arm_unorddf2 \
+	_arm_fixdfsi _arm_fixunsdfsi _arm_truncdfsf2 \
+	_arm_negsf2 _arm_muldivsf3 _arm_cmpsf2 _arm_unordsf2 \
+	_arm_fixsfsi _arm_fixunssfsi
+ 
+ # Just for these, we omit the frame pointer since it makes such a big
+ # difference.
+--- a/gcc/config/arm/linux-elf.h
+++ b/gcc/config/arm/linux-elf.h
+@@ -58,8 +58,6 @@
+    %{shared:-lc} \
+    %{!shared:%{profile:-lc_p}%{!profile:-lc}}"
+ 
+-#define LIBGCC_SPEC "%{mfloat-abi=soft*:-lfloat} -lgcc"
+-
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
+ 
+ #define LINUX_TARGET_LINK_SPEC  "%{h*} \
--- a/toolchain/gcc/patches/8.3.0/820-libgcc_pic.patch
+++ b/toolchain/gcc/patches/8.3.0/820-libgcc_pic.patch
@@ -0,0 +1,44 @@
+commit c96312958c0621e72c9b32da5bc224ffe2161384
+Author: Felix Fietkau <nbd@openwrt.org>
+Date:   Mon Oct 19 23:26:09 2009 +0000
+
+    gcc: create a proper libgcc_pic.a static library for relinking (4.3.3+ for now, backport will follow)
+    
+    SVN-Revision: 18086
+
+--- a/libgcc/Makefile.in
+++ b/libgcc/Makefile.in
+@@ -923,11 +923,12 @@ $(libgcov-driver-objects): %$(objext): $
+ 
+ # Static libraries.
+ libgcc.a: $(libgcc-objects)
+libgcc_pic.a: $(libgcc-s-objects)
+ libgcov.a: $(libgcov-objects)
+ libunwind.a: $(libunwind-objects)
+ libgcc_eh.a: $(libgcc-eh-objects)
+ 
+-libgcc.a libgcov.a libunwind.a libgcc_eh.a:
+libgcc.a libgcov.a libunwind.a libgcc_eh.a libgcc_pic.a:
+ 	-rm -f $@
+ 
+ 	objects="$(objects)";					\
+@@ -948,7 +949,7 @@ all: libunwind.a
+ endif
+ 
+ ifeq ($(enable_shared),yes)
+-all: libgcc_eh.a libgcc_s$(SHLIB_EXT)
+all: libgcc_eh.a libgcc_pic.a libgcc_s$(SHLIB_EXT)
+ ifneq ($(LIBUNWIND),)
+ all: libunwind$(SHLIB_EXT)
+ libgcc_s$(SHLIB_EXT): libunwind$(SHLIB_EXT)
+@@ -1154,6 +1155,10 @@ install-shared:
+ 	chmod 644 $(DESTDIR)$(inst_libdir)/libgcc_eh.a
+ 	$(RANLIB) $(DESTDIR)$(inst_libdir)/libgcc_eh.a
+ 
+	$(INSTALL_DATA) libgcc_pic.a $(mapfile) $(DESTDIR)$(inst_libdir)/
+	chmod 644 $(DESTDIR)$(inst_libdir)/libgcc_pic.a
+	$(RANLIB) $(DESTDIR)$(inst_libdir)/libgcc_pic.a
+
+ 	$(subst @multilib_dir@,$(MULTIDIR),$(subst \
+ 		@shlib_base_name@,libgcc_s,$(subst \
+ 		@shlib_slibdir_qual@,$(MULTIOSSUBDIR),$(SHLIB_INSTALL))))
--- a/toolchain/gcc/patches/8.3.0/840-armv4_pass_fix-v4bx_to_ld.patch
+++ b/toolchain/gcc/patches/8.3.0/840-armv4_pass_fix-v4bx_to_ld.patch
@@ -0,0 +1,28 @@
+commit 7edc8ca5456d9743dd0075eb3cc5b04f4f24c8cc
+Author: Imre Kaloz <kaloz@openwrt.org>
+Date:   Wed Feb 2 19:34:36 2011 +0000
+
+    add armv4 fixup patches
+    
+    SVN-Revision: 25322
+
+
+--- a/gcc/config/arm/linux-eabi.h
+++ b/gcc/config/arm/linux-eabi.h
+@@ -88,10 +88,15 @@
+ #define MUSL_DYNAMIC_LINKER \
+   "/lib/ld-musl-arm" MUSL_DYNAMIC_LINKER_E "%{mfloat-abi=hard:hf}.so.1"
+ 
+/* For armv4 we pass --fix-v4bx to linker to support EABI */
+#undef TARGET_FIX_V4BX_SPEC
+#define TARGET_FIX_V4BX_SPEC " %{mcpu=arm8|mcpu=arm810|mcpu=strongarm*"\
+  "|march=armv4|mcpu=fa526|mcpu=fa626:--fix-v4bx}"
+
+ /* At this point, bpabi.h will have clobbered LINK_SPEC.  We want to
+    use the GNU/Linux version, not the generic BPABI version.  */
+ #undef  LINK_SPEC
+-#define LINK_SPEC EABI_LINK_SPEC					\
+#define LINK_SPEC EABI_LINK_SPEC TARGET_FIX_V4BX_SPEC			\
+   LINUX_OR_ANDROID_LD (LINUX_TARGET_LINK_SPEC,				\
+ 		       LINUX_TARGET_LINK_SPEC " " ANDROID_LINK_SPEC)
+ 
--- a/Show More
+++ b/Show More