# $FreeWRT$

include $(TOPDIR)/rules.mk
include ../rules.mk

GCC_VERSION:=3.4.4
GCC_SITE:=ftp://ftp.fu-berlin.de/unix/languages/gcc/releases/gcc-$(GCC_VERSION) \
          http://mirrors.rcn.net/pub/sourceware/gcc/releases/gcc-$(GCC_VERSION)
GCC_MD5SUM:=b594ff4ea4fbef4ba9220887de713dfe
SOURCE:=gcc-$(GCC_VERSION).tar.bz2
GCC_DIR:=$(TOOLCHAIN_BUILD_DIR)/gcc-$(GCC_VERSION)

TARGET_LANGUAGES:=c,c++

GCC_BUILD_DIR1:=$(TOOLCHAIN_BUILD_DIR)/gcc-$(GCC_VERSION)-initial

$(DL_DIR)/$(SOURCE):
	mkdir -p $(DL_DIR)
	$(SCRIPT_DIR)/download.pl $(DL_DIR) $(SOURCE) $(GCC_MD5SUM) $(GCC_SITE)

$(GCC_DIR)/.unpacked: $(DL_DIR)/$(SOURCE)
	${EXTRACT_CMD}
	touch $@

$(GCC_DIR)/.patched: $(GCC_DIR)/.unpacked
	# Apply any files named gcc-*.patch from the source directory to gcc
	$(SCRIPT_DIR)/patch-kernel.sh $(GCC_DIR) ./$(GCC_VERSION) \*.patch
	$(SED) 's,\(version_string.. = "[0-9\.]*\).*\(";\),\1 (FreeWRT 2.0)\2,' $(GCC_DIR)/gcc/version.c
	$(SED) 's,\(bug_report_url.. = "\).*\(";\),\1<URL:http://www.freewrt.de/>\2,' $(GCC_DIR)/gcc/version.c
	touch $@

$(GCC_BUILD_DIR1)/.configured: $(GCC_DIR)/.patched
	mkdir -p $(GCC_BUILD_DIR1)
	(cd $(GCC_BUILD_DIR1); rm -f config.cache; PATH=$(TARGET_PATH) \
		$(GCC_DIR)/configure \
		--prefix=$(STAGING_DIR) \
		--build=$(GNU_HOST_NAME) \
		--host=$(GNU_HOST_NAME) \
		--target=$(REAL_GNU_TARGET_NAME) \
		--enable-languages=c \
		--disable-shared \
		--with-sysroot=$(TOOLCHAIN_BUILD_DIR)/uClibc_dev/ \
		--disable-__cxa_atexit \
		--enable-target-optspace \
		--with-gnu-ld \
		--disable-nls \
		--enable-largefile \
	);
	touch $@

$(GCC_BUILD_DIR1)/.compiled: $(GCC_BUILD_DIR1)/.configured
	PATH=$(TARGET_PATH) $(MAKE) -C $(GCC_BUILD_DIR1) all-gcc
	touch $@

$(STAGING_DIR)/bin/$(REAL_GNU_TARGET_NAME)-gcc: $(GCC_BUILD_DIR1)/.compiled
	PATH=$(TARGET_PATH) $(MAKE) -C $(GCC_BUILD_DIR1) install-gcc

GCC_BUILD_DIR2:=$(TOOLCHAIN_BUILD_DIR)/gcc-$(GCC_VERSION)-final
$(GCC_BUILD_DIR2)/.configured: $(GCC_DIR)/.patched $(STAGING_DIR)/lib/libc.a
	mkdir -p $(GCC_BUILD_DIR2)
	# Important!  Required for limits.h to be fixed.
	rm -rf $(STAGING_DIR)/$(REAL_GNU_TARGET_NAME)/sys-include
	ln -sf ../include $(STAGING_DIR)/$(REAL_GNU_TARGET_NAME)/sys-include
	rm -rf $(STAGING_DIR)/$(REAL_GNU_TARGET_NAME)/lib
	ln -sf ../lib $(STAGING_DIR)/$(REAL_GNU_TARGET_NAME)/lib
	(cd $(GCC_BUILD_DIR2); rm -f config.cache; PATH=$(TARGET_PATH) \
		$(GCC_DIR)/configure \
		--prefix=$(STAGING_DIR) \
		--build=$(GNU_HOST_NAME) \
		--host=$(GNU_HOST_NAME) \
		--target=$(REAL_GNU_TARGET_NAME) \
		--enable-languages=$(TARGET_LANGUAGES) \
		--enable-shared \
		--disable-__cxa_atexit \
		--enable-target-optspace \
		--with-gnu-ld \
		--disable-nls \
		--enable-largefile \
	);
	touch $@

$(GCC_BUILD_DIR2)/.compiled: $(GCC_BUILD_DIR2)/.configured
	PATH=$(TARGET_PATH) $(MAKE) -C $(GCC_BUILD_DIR2) all
	touch $@

gcc-install: $(GCC_BUILD_DIR2)/.compiled
	PATH=$(TARGET_PATH) $(MAKE) -C $(GCC_BUILD_DIR2) install
	echo $(GCC_VERSION) > $(STAGING_DIR)/gcc_version
	# Set up the symlinks to enable lying about target name.
	set -e; \
	(cd $(STAGING_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; \
	);
# We do another ugly hack here because the standard behaviour is
# to include a reference to libgcc.so.1 in all binaries. For flash space
# saving, we change the specs file to link in a static libgcc here.
	if [ -f $(STAGING_DIR)/lib/gcc/$(REAL_GNU_TARGET_NAME)/$(GCC_VERSION)/specs ] ; then \
		patch -d $(STAGING_DIR)/lib/gcc/$(REAL_GNU_TARGET_NAME)/$(GCC_VERSION)/ -p0 < ./$(GCC_VERSION)/static-libgcc.patch.conditional ; \
	fi;

source: $(DL_DIR)/$(SOURCE)
prepare: $(STAGING_DIR)/bin/$(REAL_GNU_TARGET_NAME)-gcc
compile: gcc-install
install:
clean: gcc-clean
	rm -rf $(GCC_DIR)
	rm -rf $(GCC_BUILD_DIR1)
	rm -rf $(GCC_BUILD_DIR2)
	rm -f $(STAGING_DIR)/bin/$(REAL_GNU_TARGET_NAME)-gc*
	rm -f $(STAGING_DIR)/bin/$(REAL_GNU_TARGET_NAME)-c*