#!/usr/bin/make -f

BASE_VERSION = $$(printf '%s\n' '$(OPK_SOURCE)' | sed 's/^gcc-//')

COMMON_OPTS = \
	--with-pkgversion='GCC for ProteanOS' \
	--program-suffix="-$(BASE_VERSION)" \
	--enable-linker-build-id \
	--with-system-zlib \
	--disable-multilib \
	--without-included-gettext \
	--with-nls \
	--with-sysroot="$${OPK_SYSROOT:-/}" \
	--enable-clocale=gnu

FULL_OPTS = \
	$(COMMON_OPTS) \
	--enable-shared \
	--enable-threads=posix \
	--enable-languages=c,c++

BOOTSTRAP1_OPTS = \
	$(COMMON_OPTS) \
	--without-headers \
	--with-newlib \
	--disable-shared \
	--disable-threads \
	--enable-languages=c,c++ \
	--disable-libgomp \
	--disable-libmudflap \
	--disable-libssp

nop:
	@:

configure:
	if [ 'x$(OPK_HOST_PLAT)' = 'xbootstrap1' ]; then \
		oh-autoconfigure -B gcc-build -- \
		$(BOOTSTRAP1_OPTS); \
	else \
		oh-autoconfigure -B gcc-build -- \
		$(FULL_OPTS); \
	fi
	touch $@

build: configure
	# TODO: This should be done in the source target.
	for f in \
			gcc/doc/gcc.texi gcc/doc/invoke.texi gcc/doc/gcov.texi \
			gcc/doc/include/funding.texi gcc/doc/gccint.texi \
			libgomp/libgomp.texi; do \
		>src/$${f}; \
	done
	oh-autobuild -B gcc-build -T bootstrap-lean -- -j $${JOBS:-1} \
		libsubdir=/usr/lib/$(OPK_HOST_ARCH)/gcc-$(BASE_VERSION) \
		libexecsubdir=/usr/lib/$(OPK_HOST_ARCH)/gcc-$(BASE_VERSION) \
		libsubincludedir=/usr/lib/$(OPK_HOST_ARCH)/gcc-$(BASE_VERSION) \
		fincludedir=/usr/lib/$(OPK_HOST_ARCH)/gcc-$(BASE_VERSION)/finclude \
		toolexeclibdir=/usr/lib/$(OPK_HOST_ARCH) MULTIOSDIR=
	touch $@

install: build
	# The -T option is necessary because otherwise:
	#   * oh-autoinstall checks for an "install" target by running make with
	#     the -n option,
	#   * Many commands in GCC makefiles contain the "$(MAKE)" macro
	#     expansion, and
	#   * GNU Make executes any commands that contain "$(MAKE)", even if -n
	#     is specified.
	# See also: <http://gcc.gnu.org/ml/gcc/2013-04/msg00171.html>.
	# TODO: Replace $(OPK_HOST_ARCH) with the target arch.
	oh-autoinstall -B gcc-build -T install -- \
		gxx_include_dir=/usr/include/c++-4.7 \
		host_installdir=/usr/include/$(OPK_HOST_ARCH)/c++-4.7/bits \
		libsubdir=/usr/lib/$(OPK_HOST_ARCH)/gcc-$(BASE_VERSION) \
		libexecsubdir=/usr/lib/$(OPK_HOST_ARCH)/gcc-$(BASE_VERSION) \
		libsubincludedir=/usr/lib/$(OPK_HOST_ARCH)/gcc-$(BASE_VERSION) \
		fincludedir=/usr/lib/$(OPK_HOST_ARCH)/gcc-$(BASE_VERSION)/finclude \
		toolexeclibdir=/usr/lib/$(OPK_HOST_ARCH) MULTIOSDIR=
	# Change the target architecture prefix of files in /usr/bin.
	rm -f dest/usr/bin/*-gcc-$(BASE_VERSION).*
	for f in c++ g++ gcc gcc-ar gcc-nm gcc-ranlib; do \
		rm -f dest/usr/bin/$${f}-$(BASE_VERSION); \
		mv dest/usr/bin/*-$${f}-$(BASE_VERSION) \
			dest/usr/bin/$(OPK_HOST_ARCH)-$$(printf '%s' \
				dest/usr/bin/*-$${f}-$(BASE_VERSION) | \
				sed "s/^.*-\($${f}\)/\1/"); \
		ln -sf $(OPK_HOST_ARCH)-$$(printf '%s' \
				dest/usr/bin/*-$${f}-$(BASE_VERSION) | \
				sed "s/^.*-\($${f}\)/\1/") \
			dest/usr/bin/$$(printf '%s' \
				dest/usr/bin/*-$${f}-$(BASE_VERSION) | \
				sed "s/^.*-\($${f}\)/\1/"); \
	done
	# Remove the internal libiberty.a.
	rm -f dest/usr/lib/$(OPK_HOST_ARCH)/libiberty.a
	# Move libstdc++.so link.
	rm -f dest/usr/lib/$(OPK_HOST_ARCH)/libstdc++.so
	ln -sf /usr/lib/$(OPK_HOST_ARCH)/libstdc++.so.6 \
		dest/usr/lib/$(OPK_HOST_ARCH)/gcc-$(BASE_VERSION)/libstdc++.so
	# Move libstdc++.a and libsupc++.a.
	mv dest/usr/lib/$(OPK_HOST_ARCH)/libstdc++.a \
		dest/usr/lib/$(OPK_HOST_ARCH)/gcc-$(BASE_VERSION)/
	mv dest/usr/lib/$(OPK_HOST_ARCH)/libsupc++.a \
		dest/usr/lib/$(OPK_HOST_ARCH)/gcc-$(BASE_VERSION)/
	# Move libmudflap.so and libmudflapth.so links.
	rm -f dest/usr/lib/$(OPK_HOST_ARCH)/libmudflap.so
	ln -sf /usr/lib/$(OPK_HOST_ARCH)/libmudflap.so.0 \
		dest/usr/lib/$(OPK_HOST_ARCH)/gcc-$(BASE_VERSION)/libmudflap.so
	rm -f dest/usr/lib/$(OPK_HOST_ARCH)/libmudflapth.so
	ln -sf /usr/lib/$(OPK_HOST_ARCH)/libmudflapth.so.0 \
		dest/usr/lib/$(OPK_HOST_ARCH)/gcc-$(BASE_VERSION)/libmudflapth.so
	# Move libmudflap.a and libmudflapth.a.
	mv dest/usr/lib/$(OPK_HOST_ARCH)/libmudflap.a \
		dest/usr/lib/$(OPK_HOST_ARCH)/gcc-$(BASE_VERSION)/
	mv dest/usr/lib/$(OPK_HOST_ARCH)/libmudflapth.a \
		dest/usr/lib/$(OPK_HOST_ARCH)/gcc-$(BASE_VERSION)/
	# Move libssp.so link.
	rm -f dest/usr/lib/$(OPK_HOST_ARCH)/libssp.so
	ln -sf /usr/lib/$(OPK_HOST_ARCH)/libssp.so.0 \
		dest/usr/lib/$(OPK_HOST_ARCH)/gcc-$(BASE_VERSION)/libssp.so
	# Move libssp.a and libssp_nonshared.a.
	mv dest/usr/lib/$(OPK_HOST_ARCH)/libssp.a \
		dest/usr/lib/$(OPK_HOST_ARCH)/gcc-$(BASE_VERSION)/
	mv dest/usr/lib/$(OPK_HOST_ARCH)/libssp_nonshared.a \
		dest/usr/lib/$(OPK_HOST_ARCH)/gcc-$(BASE_VERSION)/
	# Move libgcc_s.so.1 under /lib.
	mkdir -p dest/lib/$(OPK_HOST_ARCH)
	mv dest/usr/lib/$(OPK_HOST_ARCH)/libgcc_s.so.1 dest/lib/$(OPK_HOST_ARCH)
	# Move libgcc_s.so link.
	rm -f dest/usr/lib/$(OPK_HOST_ARCH)/libgcc_s.so
	ln -sf /lib/$(OPK_HOST_ARCH)/libgcc_s.so.1 \
		dest/usr/lib/$(OPK_HOST_ARCH)/gcc-$(BASE_VERSION)/libgcc_s.so
	# Move libquadmath.so link.
	rm -f dest/usr/lib/$(OPK_HOST_ARCH)/libquadmath.so
	ln -sf /usr/lib/$(OPK_HOST_ARCH)/libquadmath.so.0 \
		dest/usr/lib/$(OPK_HOST_ARCH)/gcc-$(BASE_VERSION)/libquadmath.so
	# Move libquadmath.a.
	mv dest/usr/lib/$(OPK_HOST_ARCH)/libquadmath.a \
		dest/usr/lib/$(OPK_HOST_ARCH)/gcc-$(BASE_VERSION)/
	# Move libgomp.so link.
	rm -f dest/usr/lib/$(OPK_HOST_ARCH)/libgomp.so
	ln -sf /usr/lib/$(OPK_HOST_ARCH)/libgomp.so.1 \
		dest/usr/lib/$(OPK_HOST_ARCH)/gcc-$(BASE_VERSION)/libgomp.so
	# Move libgomp.a.
	mv dest/usr/lib/$(OPK_HOST_ARCH)/libgomp.a \
		dest/usr/lib/$(OPK_HOST_ARCH)/gcc-$(BASE_VERSION)/
	# Move libitm.so link.
	rm -f dest/usr/lib/$(OPK_HOST_ARCH)/libitm.so
	ln -sf /usr/lib/$(OPK_HOST_ARCH)/libitm.so.1 \
		dest/usr/lib/$(OPK_HOST_ARCH)/gcc-$(BASE_VERSION)/libitm.so
	# Move libitm.a.
	mv dest/usr/lib/$(OPK_HOST_ARCH)/libitm.a \
		dest/usr/lib/$(OPK_HOST_ARCH)/gcc-$(BASE_VERSION)/
	# Remove libtool archives.
	rm -f \
		dest/usr/lib/$(OPK_HOST_ARCH)/libmudflap.la \
		dest/usr/lib/$(OPK_HOST_ARCH)/libmudflapth.la \
		dest/usr/lib/$(OPK_HOST_ARCH)/libssp.la \
		dest/usr/lib/$(OPK_HOST_ARCH)/libssp_nonshared.la \
		dest/usr/lib/$(OPK_HOST_ARCH)/gcc-$(BASE_VERSION)/liblto_plugin.la \
		dest/usr/lib/$(OPK_HOST_ARCH)/libquadmath.la \
		dest/usr/lib/$(OPK_HOST_ARCH)/libgomp.la \
		dest/usr/lib/$(OPK_HOST_ARCH)/libitm.la \
		dest/usr/lib/$(OPK_HOST_ARCH)/libstdc++.la \
		dest/usr/lib/$(OPK_HOST_ARCH)/libsupc++.la

# POSIX.1-2008:
#   If the pathname does not begin with a '/' it shall be treated as relative to
#   the current working directory of the process, not relative to the directory
#   containing the makefile.
include ../source.mk