Initial commit

target/sdk/files/Config.in

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+menu "Global build settings"
+
+	config ALL_NONSHARED
+		bool "Select all target specific packages by default"
+		default ALL
+
+	config ALL_KMODS
+		bool "Select all kernel module packages by default"
+		default ALL
+
+	config ALL
+		bool "Select all userspace packages by default"
+		default y
+
+	config SIGNED_PACKAGES
+		bool "Cryptographically sign package lists"
+		default y
+
+endmenu
+
+config IN_SDK
+	default y
+	bool
+
+config MODULES
+	bool
+	default y
+	option modules
+
+source "Config-build.in"
+source "tmp/.config-package.in"

target/sdk/files/Makefile

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+# Makefile for OpenWrt
+#
+# Copyright (C) 2007-2015 OpenWrt.org
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+
+TOPDIR:=${CURDIR}
+LC_ALL:=C
+LANG:=C
+SDK:=1
+export TOPDIR LC_ALL LANG SDK
+
+world:
+
+export PATH:=$(TOPDIR)/staging_dir/host/bin:$(PATH)
+
+ifneq ($(OPENWRT_BUILD),1)
+  override OPENWRT_BUILD=1
+  export OPENWRT_BUILD
+
+  empty:=
+  space:= $(empty) $(empty)
+  _SINGLE=export MAKEFLAGS=$(space);
+
+  include $(TOPDIR)/include/debug.mk
+  include $(TOPDIR)/include/depends.mk
+  include $(TOPDIR)/include/toplevel.mk
+else
+  include rules.mk
+  include $(INCLUDE_DIR)/depends.mk
+  include $(INCLUDE_DIR)/subdir.mk
+  include package/Makefile
+
+$(package/stamp-compile): $(BUILD_DIR)/.prepared
+$(BUILD_DIR)/.prepared: Makefile
+	@mkdir -p $$(dirname $@)
+	@touch $@
+
+clean: FORCE
+	git clean -f -d $(STAGING_DIR); true
+	git clean -f -d $(BUILD_DIR); true
+	git clean -f -d $(BIN_DIR); true
+
+dirclean: clean
+	git reset --hard HEAD
+	git clean -f -d
+	rm -rf feeds/
+
+# check prerequisites before starting to build
+prereq: $(package/stamp-prereq) ;
+
+world: prepare $(package/stamp-compile) FORCE
+	@$(MAKE) package/index
+
+.PHONY: clean dirclean prereq prepare world
+
+endif

target/sdk/files/README.SDK

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+This is the OpenWrt SDK. It contains a stripped-down version of
+the buildroot. You can use it to test/develop packages without
+having to compile your own toolchain or any of the libraries
+included with OpenWrt.
+
+To use it, just put your buildroot-compatible package directory
+(including its dependencies) in the subdir 'package/' and run
+'make' from this directory.
+
+To make dependency handling easier, you can use ./scripts/feeds
+to install any core package that you need

target/sdk/files/include/prepare.mk

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+#
+# Copyright (C) 2015 OpenWrt.org
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+
+prepare: .git/config
+
+.git/config:
+	@( \
+		printf "Initializing SDK ... "; \
+		git init -q .; \
+		find . -mindepth 1 -maxdepth 1 -not -name feeds | xargs git add; \
+		git commit -q -m "Initial state"; \
+		echo "ok."; \
+	)