Initial commit

tools/libdeflate/Makefile

@@ -0,0 +1,39 @@
+#
+# Copyright (C) 2022 OpenWrt.org
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=libdeflate
+PKG_VERSION:=1.20
+PKG_RELEASE:=2
+
+PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
+PKG_SOURCE_URL:=https://github.com/ebiggers/libdeflate/releases/download/v$(PKG_VERSION)
+PKG_HASH:=c52cf0239fd644d71c9e88613dd7431a5306ebee1280c5791c71ca264869250a
+
+include $(INCLUDE_DIR)/host-build.mk
+
+DECOMPRESS_CMD:=$(STAGING_DIR_HOST)/bin/gzip -dc $(DL_DIR)/$(PKG_SOURCE) |
+
+define Host/Compile
+	$(HOSTCC_NOCACHE) $(HOST_CFLAGS) $(HOST_LDFLAGS) \
+	$(HOST_BUILD_DIR)/lib/*{,/*}.c \
+	$(HOST_BUILD_DIR)/programs/{gzip,prog_util,tgetopt}.c \
+	-o $(HOST_BUILD_DIR)/libdeflate-gzip
+endef
+
+define Host/Install
+	$(INSTALL_BIN) $(HOST_BUILD_DIR)/libdeflate-gzip $(STAGING_DIR_HOST)/bin/
+	$(LN) libdeflate-gzip $(STAGING_DIR_HOST)/bin/libdeflate-gunzip
+endef
+
+define Host/Uninstall
+	$(RM) $(STAGING_DIR_HOST)/bin/libdeflate-gzip
+	$(RM) $(STAGING_DIR_HOST)/bin/libdeflate-gunzip
+	$(call Host/Uninstall/Default)
+endef
+
+$(eval $(call HostBuild))

tools/libdeflate/patches/0001-lib-x86-increase-AVX-VNNI-gcc-prerequisite-to-12.1.patch

@@ -0,0 +1,32 @@
+From e522b1d09d3536ddc15459b4259150f4a53ee65a Mon Sep 17 00:00:00 2001
+From: Eric Biggers <ebiggers@google.com>
+Date: Thu, 4 Apr 2024 20:16:33 -0400
+Subject: [PATCH] lib/x86: increase AVX-VNNI gcc prerequisite to 12.1
+
+Although gcc 11.1 supports AVX-VNNI, a popular distro pairs it with a
+binutils version that does not.  Require gcc 12 instead.
+
+Resolves https://github.com/ebiggers/libdeflate/issues/365
+---
+ lib/x86/adler32_impl.h | 9 ++++++++-
+ 1 file changed, 8 insertions(+), 1 deletion(-)
+
+--- a/lib/x86/adler32_impl.h
++++ b/lib/x86/adler32_impl.h
+@@ -52,8 +52,15 @@
+ /*
+  * AVX-VNNI implementation.  This is used on CPUs that have AVX2 and AVX-VNNI
+  * but don't have AVX-512, for example Intel Alder Lake.
++ *
++ * Unusually for a new CPU feature, gcc added support for the AVX-VNNI
++ * intrinsics (in gcc 11.1) slightly before binutils added support for
++ * assembling AVX-VNNI instructions (in binutils 2.36).  Distros can reasonably
++ * have gcc 11 with binutils 2.35.  Because of this issue, we check for gcc 12
++ * instead of gcc 11.  (libdeflate supports direct compilation without a
++ * configure step, so checking the binutils version is not always an option.)
+  */
+-#if GCC_PREREQ(11, 1) || CLANG_PREREQ(12, 0, 13000000) || MSVC_PREREQ(1930)
++#if GCC_PREREQ(12, 1) || CLANG_PREREQ(12, 0, 13000000) || MSVC_PREREQ(1930)
+ #  define adler32_x86_avx2_vnni	adler32_x86_avx2_vnni
+ #  define SUFFIX			   _avx2_vnni
+ #  define ATTRIBUTES		_target_attribute("avx2,avxvnni")