# This file is part of the OpenADK project. OpenADK is copyrighted
# material, please see the LICENCE file in the top-level directory.

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

TARGET_CFLAGS:=	$(filter-out -fstack-protector,$(TARGET_CFLAGS))

include Makefile.inc

GCC_CONFOPTS=		--prefix=$(STAGING_HOST_DIR) \
			--build=$(GNU_HOST_NAME) \
			--host=$(GNU_HOST_NAME) \
			--target=$(REAL_GNU_TARGET_NAME) \
			--with-gmp=$(STAGING_HOST_DIR) \
			--with-mpfr=$(STAGING_HOST_DIR) \
			--with-libelf=$(STAGING_HOST_DIR) \
			--disable-__cxa_atexit \
			--with-gnu-ld \
			--disable-libmudflap \
			--disable-libgomp \
			--disable-decimal-float \
			--disable-libstdcxx-pch \
			--disable-ppl-version-check \
			--disable-cloog-version-check \
			--without-ppl \
			--without-cloog \
			--disable-nls

ifeq ($(ADK_TOOLCHAIN_GCC_SJLJ),y)
GCC_CONFOPTS+=		--enable-sjlj-exceptions
else
GCC_CONFOPTS+=		--disable-sjlj-exceptions
endif

ifeq ($(ADK_LINUX_SH)$(ADK_LINUX_X86_64),)
GCC_CONFOPTS+=		--disable-biarch --disable-multilib
endif
ifeq ($(ADK_LINUX_SH),y)
GCC_CONFOPTS+=		--with-multilib-list=m4,m4-nofpu
endif
ifeq ($(ADK_LINUX_X86_64),y)
ifeq ($(ADK_x32),y)
GCC_CONFOPTS+=		--with-multilib-list=mx32
else
GCC_CONFOPTS+=		--disable-biarch --disable-multilib
endif
endif

ifeq ($(ADK_TOOLCHAIN_GCC_SSP),y)
GCC_CONFOPTS+=		--enable-libssp
else
GCC_CONFOPTS+=		--disable-libssp
endif

ifeq ($(ADK_TOOLCHAIN_GCC_LTO),y)
GCC_CONFOPTS+=		--enable-lto
else
GCC_CONFOPTS+=		--disable-lto
endif

ifeq ($(ARCH),m68k)
GCC_CONFOPTS+=		--disable-tls
else 
ifeq ($(ARCH),cris)
GCC_CONFOPTS+=		--disable-tls
else
GCC_CONFOPTS+=		--enable-tls
endif
endif

ifeq ($(ARCH),powerpc)
ifeq ($(ADK_TARGET_LIBC),musl)
GCC_CONFOPTS+=		--disable-target-optspace --with-long-double-64 --enable-secureplt
else
GCC_CONFOPTS+=		--disable-target-optspace --with-long-double-128 --enable-secureplt
endif
else
GCC_CONFOPTS+=		--enable-target-optspace
endif

ifeq ($(ARCH),mips)
ifeq ($(ADK_TARGET_NO_FPU),y)
GCC_CONFOPTS+=		--with-float=soft
else
GCC_CONFOPTS+=          --with-float=hard
endif
endif

ifeq ($(ADK_TARGET_SYSTEM_RASPBERRY_PI),y)
GCC_CONFOPTS+=          --with-arch=armv6 --with-fpu=vfp --with-float=hard
endif

ifneq ($(ADK_TARGET_ABI),)
GCC_CONFOPTS+=		--with-abi=${ADK_TARGET_ABI}
endif

ifeq (${ADK_MAKE_PARALLEL},y)
GCC_MAKEOPTS+=		-j${ADK_MAKE_JOBS}
endif

LANGUAGES:=c
ifeq ($(ADK_TOOLCHAIN_GCC_CXX),y)
LANGUAGES:=${LANGUAGES},c++
endif
ifeq ($(ADK_TOOLCHAIN_GCC_JAVA),y)
LANGUAGES:=${LANGUAGES},java
GCC_CONFOPTS+=		--enable-java-home
endif
ifeq ($(ADK_TOOLCHAIN_GCC_ADA),y)
LANGUAGES:=${LANGUAGES},ada
endif

include ${TOPDIR}/mk/buildhlp.mk

GCC_BUILD_DIR_MINIMAL:=	$(WRKBUILD)-minimal
GCC_BUILD_DIR_INITIAL:=	$(WRKBUILD)-initial
GCC_BUILD_DIR_FINAL:=	$(WRKBUILD)-final

$(GCC_BUILD_DIR_MINIMAL)/.configured:
	mkdir -p $(GCC_BUILD_DIR_MINIMAL)
	# these symlinks are very important, do not remove
	rm -rf $(STAGING_HOST_DIR)/$(REAL_GNU_TARGET_NAME)/sys-include
	ln -sf ${STAGING_TARGET_DIR}/include $(STAGING_HOST_DIR)/$(REAL_GNU_TARGET_NAME)/sys-include
	rm -rf ${STAGING_HOST_DIR}/$(REAL_GNU_TARGET_NAME)/lib
	ln -sf ${STAGING_TARGET_DIR}/lib $(STAGING_HOST_DIR)/$(REAL_GNU_TARGET_NAME)/lib
ifeq ($(ADK_LINUX_SH),y)
	(cd ${STAGING_TARGET_DIR}/ && ln -sf . m4 && ln -sf . m4-nofpu)
endif
	sed -i '/k prot/agcc_cv_libc_provides_ssp=yes' $(WRKBUILD)/gcc/configure
	cd $(GCC_BUILD_DIR_MINIMAL); PATH='$(TARGET_PATH)' \
		$(WRKBUILD)/configure \
			${GCC_CONFOPTS} \
			--enable-languages=c \
			--disable-shared \
			--with-newlib \
			--without-headers
	touch $@

$(GCC_BUILD_DIR_MINIMAL)/.compiled: $(GCC_BUILD_DIR_MINIMAL)/.configured
	PATH='$(TARGET_PATH)' $(MAKE) ${GCC_MAKEOPTS} -C $(GCC_BUILD_DIR_MINIMAL) all-gcc
	touch $@

$(WRKBUILD)/.headers: $(GCC_BUILD_DIR_MINIMAL)/.compiled
	PATH='$(TARGET_PATH)' $(MAKE) -C $(GCC_BUILD_DIR_MINIMAL) install-gcc
	touch $@

$(GCC_BUILD_DIR_INITIAL)/.configured:
	mkdir -p $(GCC_BUILD_DIR_INITIAL)
	cd $(GCC_BUILD_DIR_INITIAL); PATH='$(TARGET_PATH)' \
		$(WRKBUILD)/configure \
			${GCC_CONFOPTS} \
			--enable-languages=c \
			--disable-shared \
			--disable-threads \
			--with-newlib \
			--with-sysroot=$(STAGING_TARGET_DIR)
	touch $@


$(GCC_BUILD_DIR_INITIAL)/.compiled: $(GCC_BUILD_DIR_INITIAL)/.configured
	PATH='$(TARGET_PATH)' $(MAKE) ${GCC_MAKEOPTS} -C $(GCC_BUILD_DIR_INITIAL) all-gcc all-target-libgcc
	touch $@

$(WRKBUILD)/.configured: $(GCC_BUILD_DIR_INITIAL)/.compiled
	PATH='$(TARGET_PATH)' $(MAKE) -C $(GCC_BUILD_DIR_INITIAL) install-gcc install-target-libgcc
	touch $@

$(GCC_BUILD_DIR_FINAL)/.configured:
	mkdir -p $(GCC_BUILD_DIR_FINAL)
	cd $(GCC_BUILD_DIR_FINAL); PATH='$(TARGET_PATH)' \
		$(WRKBUILD)/configure \
			${GCC_CONFOPTS} \
			--enable-languages=$(LANGUAGES) \
			--with-sysroot='$${prefix}/${STAGING_HOST2TARGET}' \
			--enable-shared
	touch $@

$(WRKBUILD)/.compiled: $(GCC_BUILD_DIR_FINAL)/.configured
	PATH='$(TARGET_PATH)' $(MAKE) ${GCC_MAKEOPTS} -C $(GCC_BUILD_DIR_FINAL) all
	touch $@

$(WRKBUILD)/.installed: $(WRKBUILD)/.compiled
	PATH='$(TARGET_PATH)' $(MAKE) -C $(GCC_BUILD_DIR_FINAL) install
	# workaround if you cross-compile binutils
	@-rm $(STAGING_TARGET_DIR)/lib/libiberty.a $(STAGING_TARGET_DIR)/usr/lib/libiberty.a
	# Set up the symlinks to enable lying about target name.
	set -e; \
	cd $(STAGING_HOST_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;
	# workaround for openjdk
	cd $(STAGING_HOST_DIR)/$(REAL_GNU_TARGET_NAME)/bin ; cp * ..
	# fix linking g++ apps with libtool
	@-test -d $(STAGING_TARGET_DIR)/lib32 && \
		cd $(STAGING_TARGET_DIR)/lib32 && \
		ln -sf libstdc++.so.6.0.17 libstdc++.so
	@-test -d $(STAGING_TARGET_DIR)/lib64 && \
		cd $(STAGING_TARGET_DIR)/lib64 && \
		ln -sf libstdc++.so.6.0.17 libstdc++.so
	touch $@

include ${TOPDIR}/mk/toolchain.mk