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#!/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

include ../targets.mk
target = $$(printf '%s' '$@' | sed 's/^[a-z]*-//')
builddir = obj-$(target)
destdir = dest-$(target)

nop:
	@:

$(configure_targets):
	if [ 'x$(OPK_HOST_PLAT)' = 'xbootstrap1' ]; then \
		oh-autoconfigure -B "$(builddir)" -t "$(target)" -- \
		$(bootstrap1_opts); \
	else \
		oh-autoconfigure -B "$(builddir)" -t "$(target)" -- \
		$(full_opts); \
	fi
	touch $@

configure: $(configure_targets)
	touch $@

$(build_targets): configure
	libsubdir="/usr/lib/$(target)/gcc-$(base_version)" && \
	oh-autobuild -B "$(builddir)" -T bootstrap-lean -- -j $${JOBS:-1} \
		libsubdir="$${libsubdir}" \
		libexecsubdir="$${libsubdir}" \
		libsubincludedir="$${libsubdir}/include" \
		fincludedir="$${libsubdir}/finclude" \
		toolexeclibdir="/usr/lib/$(target)" \
		MULTIOSDIR=
	touch $@

build: $(build_targets)
	touch $@

$(install_targets): build
	# The -T option is necessary because otherwise:
	#   * oh-autoinstall checks for an "install" target by running make with
	#     the -n option,
	#   * Many commands in GCC makefiles contain the "$(MAKE)" macro
	#     expansion, and
	#   * GNU Make executes any commands that contain "$(MAKE)", even if -n
	#     is specified.
	# See also: <http://gcc.gnu.org/ml/gcc/2013-04/msg00171.html>.
	libsubdir="/usr/lib/$(target)/gcc-$(base_version)" && \
	oh-autoinstall -B "$(builddir)" -d "$(destdir)" -T install -- \
		gxx_include_dir=/usr/include/c++-4.7 \
		host_installdir=/usr/include/$(target)/c++-4.7/bits \
		libsubdir="$${libsubdir}" \
		libexecsubdir="$${libsubdir}" \
		libsubincludedir="$${libsubdir}/include" \
		fincludedir="$${libsubdir}/finclude" \
		toolexeclibdir="/usr/lib/$(target)" \
		MULTIOSDIR=
	# Change the target architecture prefix of files in /usr/bin.
	rm -f $(destdir)/usr/bin/*-gcc-$(base_version).*
	for f in c++ g++ gcc gcc-ar gcc-nm gcc-ranlib; do \
		rm -f $(destdir)/usr/bin/$${f}-$(base_version); \
		mv $(destdir)/usr/bin/*-$${f}-$(base_version) \
			$(destdir)/usr/bin/$(target)-$$(printf '%s' \
				$(destdir)/usr/bin/*-$${f}-$(base_version) | \
				sed "s/^.*-\($${f}\)/\1/"); \
		ln -sf $(target)-$$(printf '%s' \
				$(destdir)/usr/bin/*-$${f}-$(base_version) | \
				sed "s/^.*-\($${f}\)/\1/") \
			$(destdir)/usr/bin/$$(printf '%s' \
				$(destdir)/usr/bin/*-$${f}-$(base_version) | \
				sed "s/^.*-\($${f}\)/\1/"); \
	done
	# Remove the internal libiberty.a.
	rm -f $(destdir)/usr/lib/$(target)/libiberty.a
	# Move libstdc++.so link.
	rm -f $(destdir)/usr/lib/$(target)/libstdc++.so
	ln -sf /usr/lib/$(target)/libstdc++.so.6 \
		$(destdir)/usr/lib/$(target)/gcc-$(base_version)/libstdc++.so
	# Move libstdc++.a and libsupc++.a.
	mv $(destdir)/usr/lib/$(target)/libstdc++.a \
		$(destdir)/usr/lib/$(target)/gcc-$(base_version)/
	mv $(destdir)/usr/lib/$(target)/libsupc++.a \
		$(destdir)/usr/lib/$(target)/gcc-$(base_version)/
	# Move libmudflap.so and libmudflapth.so links.
	rm -f $(destdir)/usr/lib/$(target)/libmudflap.so
	ln -sf /usr/lib/$(target)/libmudflap.so.0 \
		$(destdir)/usr/lib/$(target)/gcc-$(base_version)/libmudflap.so
	rm -f $(destdir)/usr/lib/$(target)/libmudflapth.so
	ln -sf /usr/lib/$(target)/libmudflapth.so.0 \
		$(destdir)/usr/lib/$(target)/gcc-$(base_version)/libmudflapth.so
	# Move libmudflap.a and libmudflapth.a.
	mv $(destdir)/usr/lib/$(target)/libmudflap.a \
		$(destdir)/usr/lib/$(target)/gcc-$(base_version)/
	mv $(destdir)/usr/lib/$(target)/libmudflapth.a \
		$(destdir)/usr/lib/$(target)/gcc-$(base_version)/
	# Move libssp.so link.
	rm -f $(destdir)/usr/lib/$(target)/libssp.so
	ln -sf /usr/lib/$(target)/libssp.so.0 \
		$(destdir)/usr/lib/$(target)/gcc-$(base_version)/libssp.so
	# Move libssp.a and libssp_nonshared.a.
	mv $(destdir)/usr/lib/$(target)/libssp.a \
		$(destdir)/usr/lib/$(target)/gcc-$(base_version)/
	mv $(destdir)/usr/lib/$(target)/libssp_nonshared.a \
		$(destdir)/usr/lib/$(target)/gcc-$(base_version)/
	# Move libgcc_s.so.1 under /lib.
	mkdir -p $(destdir)/lib/$(target)
	mv $(destdir)/usr/lib/$(target)/libgcc_s.so.1 $(destdir)/lib/$(target)
	# Move libgcc_s.so link.
	rm -f $(destdir)/usr/lib/$(target)/libgcc_s.so
	ln -sf /lib/$(target)/libgcc_s.so.1 \
		$(destdir)/usr/lib/$(target)/gcc-$(base_version)/libgcc_s.so
	# Move libquadmath.so link.
	rm -f $(destdir)/usr/lib/$(target)/libquadmath.so
	ln -sf /usr/lib/$(target)/libquadmath.so.0 \
		$(destdir)/usr/lib/$(target)/gcc-$(base_version)/libquadmath.so
	# Move libquadmath.a.
	mv $(destdir)/usr/lib/$(target)/libquadmath.a \
		$(destdir)/usr/lib/$(target)/gcc-$(base_version)/
	# Move libgomp.so link.
	rm -f $(destdir)/usr/lib/$(target)/libgomp.so
	ln -sf /usr/lib/$(target)/libgomp.so.1 \
		$(destdir)/usr/lib/$(target)/gcc-$(base_version)/libgomp.so
	# Move libgomp.a.
	mv $(destdir)/usr/lib/$(target)/libgomp.a \
		$(destdir)/usr/lib/$(target)/gcc-$(base_version)/
	# Move libitm.so link.
	rm -f $(destdir)/usr/lib/$(target)/libitm.so
	ln -sf /usr/lib/$(target)/libitm.so.1 \
		$(destdir)/usr/lib/$(target)/gcc-$(base_version)/libitm.so
	# Move libitm.a.
	mv $(destdir)/usr/lib/$(target)/libitm.a \
		$(destdir)/usr/lib/$(target)/gcc-$(base_version)/
	# Remove libtool archives.
	libdir=usr/lib/$(target) && \
	rm -f \
		$(destdir)/$(libdir)/libmudflap.la \
		$(destdir)/$(libdir)/libmudflapth.la \
		$(destdir)/$(libdir)/libssp.la \
		$(destdir)/$(libdir)/libssp_nonshared.la \
		$(destdir)/$(libdir)/gcc-$(base_version)/liblto_plugin.la \
		$(destdir)/$(libdir)/libquadmath.la \
		$(destdir)/$(libdir)/libgomp.la \
		$(destdir)/$(libdir)/libitm.la \
		$(destdir)/$(libdir)/libstdc++.la \
		$(destdir)/$(libdir)/libsupc++.la
	# Remove the info directory node.
	rm -f $(destdir)/usr/share/info/dir
	# Remove empty documentation files.
	find $(destdir)/usr/share/man -type f -a -size 0c -a \
		-exec rm -f '{}' ';'
	find $(destdir)/usr/share/info -type f -a -size 0c -a \
		-exec rm -f '{}' ';'
	# TODO: Provide these files in a fixincludes package (arch:any,
	# target-specific?).
	rm -Rf $(destdir)/usr/lib/$(target)/gcc-$(base_version)/install-tools/
	# TODO: Provide these files in a libstdc++-*-dbg package.
	rm -f $(destdir)/usr/lib/$(target)/libstdc++.so.*-gdb.py
	rm -Rf $(destdir)/usr/share/gcc-*/python/libstdcxx/
	# TODO: Provide these files in a doc package.
	rm -Rf $(destdir)/usr/share/man/ $(destdir)/usr/share/info/
	# TODO: Provide these files in a gcc-*-plugin-dev package.
	rm -Rf $(destdir)/usr/lib/$(target)/gcc-$(base_version)/plugin/
	OPK_PACKAGES="\
		gcc-$(base_version)-$(target) \
		cpp-$(base_version)-$(target) \
		g++-$(base_version)-$(target) \
		"; \
	if [ "x$(target)" = 'x$(OPK_HOST_ARCH)' ]; then \
		OPK_PACKAGES="$${OPK_PACKAGES} \
		libgcc.1 \
		libstdc++.6 \
		libstdc++.6-$(base_version)-dev \
		gcc-$(base_version)-locales \
		"; \
	fi; \
	export OPK_PACKAGES; \
	oh-installfiles -d "$(destdir)"

install: $(install_targets)

# 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