gcc: split up the build process into three distinct stages (minimal, initial, final), to clean up the dependency handling nastiness and to improve support for rebuilding parts of the toolchain

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@22319 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 71 insertions, 0 deletions

diff --git a/toolchain/gcc/final/Makefile b/toolchain/gcc/final/Makefile
new file mode 100644
index 0000000000..bdba277b44
--- /dev/null
+++ b/toolchain/gcc/final/Makefile
@@ -0,0 +1,71 @@
+GCC_VARIANT:=final
+
+include ../common.mk
+
+GCC_CONFIGURE += \
+	--enable-languages=$(TARGET_LANGUAGES) \
+	--enable-shared \
+	--enable-threads \
+	--with-slibdir=$(TOOLCHAIN_DIR)/lib
+
+ifneq ($(CONFIG_GCC_VERSION_4_5),)
+  GCC_CONFIGURE += \
+	--enable-lto \
+	--with-libelf=$(TOPDIR)/staging_dir/host
+endif
+
+ifneq ($(CONFIG_TLS_SUPPORT),)
+  GCC_CONFIGURE += \
+	--enable-tls
+else
+  GCC_CONFIGURE += \
+	--disable-tls
+endif
+
+define Host/Configure
+	mkdir -p $(GCC_BUILD_DIR) $(TOOLCHAIN_DIR)/usr/$(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 $(GCC_BUILD_DIR) && rm -f config.cache; \
+		$(GCC_CONFIGURE) \
+	);
+endef
+
+define Host/Compile
+	$(GCC_MAKE) -C $(GCC_BUILD_DIR) all
+endef
+
+define SetupExtraArch
+	for app in $(TOOLCHAIN_DIR)/usr/bin/$(OPTIMIZE_FOR_CPU)*-{gcc,gcc-*,g++}; do \
+		[ -e $$$$app ] || continue; \
+		old_base=$$$$(basename $$$$app); \
+		new_base=$(call qstrip,$(CONFIG_EXTRA_TARGET_ARCH_NAME))-$$$${old_base##$(OPTIMIZE_FOR_CPU)-}; \
+		sed -e "s/@CC_BASE@/$$$$old_base/" \
+			-e 's/@EXTRA_ARCH_OPTS@/$(call qstrip,$(CONFIG_EXTRA_TARGET_ARCH_OPTS))/' \
+			 ../files/alternate-arch-cc.in > \
+			 $(TOOLCHAIN_DIR)/usr/bin/$$$$new_base; \
+		chmod a+x $(TOOLCHAIN_DIR)/usr/bin/$$$$new_base; \
+	done
+endef
+
+define Host/Install
+	$(_SINGLE)$(GCC_MAKE) -C $(GCC_BUILD_DIR) install
+	# Set up the symlinks to enable lying about target name.
+	set -e; \
+	(cd $(TOOLCHAIN_DIR)/usr; \
+		ln -sf $(REAL_GNU_TARGET_NAME) $(GNU_TARGET_NAME); \
+		cd bin; \
+		for app in $(REAL_GNU_TARGET_NAME)-* ; do \
+			ln -sf $$$${app} \
+		   	$(GNU_TARGET_NAME)$$$${app##$(REAL_GNU_TARGET_NAME)}; \
+		done; \
+	);
+	$(if $(CONFIG_EXTRA_TARGET_ARCH),$(call SetupExtraArch))
+endef
+
+$(eval $(call HostBuild))
+