+PKG_NAME:=gcc
+PKG_VERSION:=$(call qstrip,$(CONFIG_GCC_VERSION))
+
+PKG_SOURCE_URL:=@GNU/gcc/gcc-$(PKG_VERSION)
+PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.bz2
+
+ifeq ($(PKG_VERSION),3.4.6)
+ PKG_MD5SUM:=4a21ac777d4b5617283ce488b808da7b
+endif
+ifeq ($(PKG_VERSION),4.1.2)
+ PKG_MD5SUM:=a4a3eb15c96030906d8494959eeda23c
+endif
+ifeq ($(PKG_VERSION),4.2.4)
+ PKG_MD5SUM:=d79f553e7916ea21c556329eacfeaa16
+endif
+ifeq ($(PKG_VERSION),4.3.3)
+ PKG_MD5SUM:=cc3c5565fdb9ab87a05ddb106ba0bd1f
+endif
+ifeq ($(PKG_VERSION),4.4.0)
+ PKG_MD5SUM:=cf5d787bee57f38168b74d65a7c0e6fd
+endif
+
+PATCH_DIR=./patches/$(PKG_VERSION)
+
+include $(INCLUDE_DIR)/toolchain-build.mk
+
+HOST_STAMP_BUILT:=$(TOOLCHAIN_DIR)/stamp/.gcc-initial_installed
+
+HOST_BUILD_DIR0:=$(HOST_BUILD_DIR)-minimal
+HOST_BUILD_DIR1:=$(HOST_BUILD_DIR)-initial
+HOST_BUILD_DIR2:=$(HOST_BUILD_DIR)-final
+
+SEP:=,
+TARGET_LANGUAGES:="c$(if $(CONFIG_INSTALL_LIBSTDCPP),$(SEP)c++)$(if $(CONFIG_INSTALL_LIBGCJ),$(SEP)java)"
+
+GCC_CONFIGURE:= \
+ SHELL="$(BASH)" \
+ $(HOST_BUILD_DIR)/configure \
+ --prefix=$(TOOLCHAIN_DIR)/usr \
+ --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-nls \
+ $(SOFT_FLOAT_CONFIG_OPTION) \
+ $(call qstrip,$(CONFIG_EXTRA_GCC_CONFIG_OPTIONS)) \
+ $(if $(CONFIG_mips64)$(CONFIG_mips64el),--with-arch=mips64 --with-abi=64) \
+
+ifneq ($(CONFIG_GCC_VERSION_4_3)$(CONFIG_GCC_VERSION_4_4),)
+ GCC_BUILD_TARGET_LIBGCC:=y
+ GCC_CONFIGURE+= \
+ --with-gmp=$(TOPDIR)/staging_dir/host \
+ --with-mpfr=$(TOPDIR)/staging_dir/host \
+ --disable-decimal-float
+endif
+
+ifneq ($(CONFIG_SSP_SUPPORT),)
+ GCC_CONFIGURE+= \
+ --enable-libssp
+else
+ GCC_CONFIGURE+= \
+ --disable-libssp
+endif
+
+ifneq ($(CONFIG_EXTRA_TARGET_ARCH),)
+ GCC_CONFIGURE+= \
+ --enable-biarch \
+ --enable-targets=$(call qstrip,$(CONFIG_EXTRA_TARGET_ARCH_NAME))-linux-$(TARGET_SUFFIX)
+endif
+
+ifeq ($(LIBC),uClibc)
+ GCC_CONFIGURE+= \
+ --disable-__cxa_atexit
+else
+ GCC_CONFIGURE+= \
+ --enable-__cxa_atexit
+endif
+
+GCC_CONFIGURE_STAGE0:= \
+ $(GCC_CONFIGURE) \
+ --with-newlib \
+ --without-headers \
+ --enable-languages=c \
+ --disable-libssp \
+ --disable-shared \
+ --disable-threads \
+
+GCC_CONFIGURE_STAGE1:= \
+ $(GCC_CONFIGURE) \
+ --with-newlib \
+ --with-sysroot=$(BUILD_DIR_TOOLCHAIN)/$(LIBC)-dev \
+ --enable-languages=c \
+ --disable-shared \
+ --disable-threads \
+
+GCC_CONFIGURE_STAGE2:= \
+ $(GCC_CONFIGURE) \
+ --enable-languages=$(TARGET_LANGUAGES) \
+ --enable-shared \
+ --enable-threads \
+ --with-slibdir=$(TOOLCHAIN_DIR)/lib \
+
+GCC_MAKE:= \
+ export SHELL="$(BASH)"; \
+ $(MAKE) \
+
+
+define Host/SetToolchainInfo
+ $(SED) 's,TARGET_CROSS=.*,TARGET_CROSS=$(REAL_GNU_TARGET_NAME)-,' $(TOOLCHAIN_DIR)/info.mk
+ $(SED) 's,GCC_VERSION=.*,GCC_VERSION=$(PKG_VERSION),' $(TOOLCHAIN_DIR)/info.mk
+endef
+
+
+define Stage0/Configure
+ mkdir -p $(HOST_BUILD_DIR0)
+ (cd $(HOST_BUILD_DIR0); rm -f config.cache; \
+ $(GCC_CONFIGURE_STAGE0) \
+ );
+endef
+
+define Stage0/Compile
+ $(GCC_MAKE) -C $(HOST_BUILD_DIR0) all-gcc
+endef
+
+define Stage0/Install
+ $(GCC_MAKE) -C $(HOST_BUILD_DIR0) install-gcc
+endef
+
+
+define Stage1/Configure
+ mkdir -p $(HOST_BUILD_DIR1)
+ (cd $(HOST_BUILD_DIR1); rm -f config.cache; \
+ $(GCC_CONFIGURE_STAGE1) \
+ );
+endef
+
+define Stage1/Compile
+ $(CP) $(BUILD_DIR_TOOLCHAIN)/linux-dev/* $(BUILD_DIR_TOOLCHAIN)/$(LIBC)-dev/
+ $(GCC_MAKE) -C $(HOST_BUILD_DIR1) \
+ all-build-libiberty \
+ all-gcc \
+ $(if $(GCC_BUILD_TARGET_LIBGCC),all-target-libgcc)
+endef
+
+define Stage1/Install
+ $(GCC_MAKE) -C $(HOST_BUILD_DIR1) \
+ install-gcc \
+ $(if $(GCC_BUILD_TARGET_LIBGCC),install-target-libgcc)
+
+ # XXX: glibc insists on linking against libgcc_eh
+ ( cd $(TOOLCHAIN_DIR)/usr/lib/gcc/$(REAL_GNU_TARGET_NAME)/$(PKG_VERSION) ; \
+ [ -e libgcc_eh.a ] || ln -sf libgcc.a libgcc_eh.a ; \
+ cp libgcc.a libgcc_initial.a; \
+ )
+endef
+
+
+define Stage2/Configure
+ mkdir -p $(HOST_BUILD_DIR2) $(TOOLCHAIN_DIR)/usr/$(REAL_GNU_TARGET_NAME)
+ # Important! Required for limits.h to be fixed.
+ rm -rf $(TOOLCHAIN_DIR)/usr/$(REAL_GNU_TARGET_NAME)/sys-include
+ ln -sf ../include $(TOOLCHAIN_DIR)/usr/$(REAL_GNU_TARGET_NAME)/sys-include
+ rm -rf $(TOOLCHAIN_DIR)/usr/$(REAL_GNU_TARGET_NAME)/lib
+ ln -sf ../lib $(TOOLCHAIN_DIR)/usr/$(REAL_GNU_TARGET_NAME)/lib
+ $(if $(CONFIG_mips64)$(CONFIG_mips64el)$(CONFIG_x86_64),ln -sf ../lib64 $(TOOLCHAIN_DIR)/usr/$(REAL_GNU_TARGET_NAME)/lib64)
+ (cd $(HOST_BUILD_DIR2); rm -f config.cache; \
+ $(GCC_CONFIGURE_STAGE2) \
+ );
+endef
+
+define Stage2/Compile
+ $(GCC_MAKE) -C $(HOST_BUILD_DIR2) all
+endef
+
+define SetupExtraArch
+ for app in $(TOOLCHAIN_DIR)/usr/bin/$(OPTIMIZE_FOR_CPU)*-{gcc,gcc-*,g++}; do \
+ [ -e $$$$app ] || continue; \
+ old_base=$$$$(basename $$$$app); \
+ new_base=$(call qstrip,$(CONFIG_EXTRA_TARGET_ARCH_NAME))-$$$${old_base##$(OPTIMIZE_FOR_CPU)-}; \
+ sed -e "s/@CC_BASE@/$$$$old_base/" \
+ -e 's/@EXTRA_ARCH_OPTS@/$(call qstrip,$(CONFIG_EXTRA_TARGET_ARCH_OPTS))/' \
+ ./files/alternate-arch-cc.in > \
+ $(TOOLCHAIN_DIR)/usr/bin/$$$$new_base; \
+ chmod a+x $(TOOLCHAIN_DIR)/usr/bin/$$$$new_base; \
+ done
+endef
+
+define Stage2/Install
+ $(GCC_MAKE) -C $(HOST_BUILD_DIR2) install
+ # Set up the symlinks to enable lying about target name.
+ set -e; \
+ (cd $(TOOLCHAIN_DIR)/usr; \
+ ln -sf $(REAL_GNU_TARGET_NAME) $(GNU_TARGET_NAME); \
+ cd bin; \
+ for app in $(REAL_GNU_TARGET_NAME)-* ; do \
+ ln -sf $$$${app} \
+ $(GNU_TARGET_NAME)$$$${app##$(REAL_GNU_TARGET_NAME)}; \
+ done; \
+ );
+ $(if $(CONFIG_EXTRA_TARGET_ARCH),$(call SetupExtraArch))
+endef
+
+
+define Host/Prepare
+ $(call Host/SetToolchainInfo)
+ $(call Host/Prepare/Default)
+ ln -snf $(PKG_NAME)-$(PKG_VERSION) $(BUILD_DIR_TOOLCHAIN)/$(PKG_NAME)
+ $(CP) $(SCRIPT_DIR)/config.{guess,sub} $(HOST_BUILD_DIR)/
+ $(SED) 's,\(version_string.. = "[0-9\.]*\).*\(";\),\1 (OpenWrt-2.0)\2,' $(HOST_BUILD_DIR)/gcc/version.c
+ $(SED) 's,\(bug_report_url.. = "\).*\(";\),\1<URL:https://dev.openwrt.org/>\2,' $(HOST_BUILD_DIR)/gcc/version.c
+ #(cd $(HOST_BUILD_DIR)/libstdc++-v3; autoconf;);
+ $(SED) 's,gcc_no_link=yes,gcc_no_link=no,' $(HOST_BUILD_DIR)/libstdc++-v3/configure
+ $(call Stage0/Configure)
+ $(call Stage0/Compile)
+ $(call Stage0/Install)
+endef
+
+define Host/Configure
+endef
+
+define Host/Compile
+ $(call Stage1/Configure)
+ $(call Stage1/Compile)
+ $(call Stage1/Install)
+endef
+
+define Host/Install
+ $(call Stage2/Configure)
+ $(call Stage2/Compile)
+ $(call Stage2/Install)
+endef
+
+define Host/Clean
+ rm -rf \
+ $(HOST_BUILD_DIR) \
+ $(HOST_BUILD_DIR0) \
+ $(HOST_BUILD_DIR1) \
+ $(HOST_BUILD_DIR2) \
+ $(BUILD_DIR_TOOLCHAIN)/$(PKG_NAME) \
+ $(TOOLCHAIN_DIR)/usr/$(REAL_GNU_TARGET_NAME) \
+ $(TOOLCHAIN_DIR)/usr/bin/$(REAL_GNU_TARGET_NAME)-gc* \
+ $(TOOLCHAIN_DIR)/usr/bin/$(REAL_GNU_TARGET_NAME)-c*
+endef