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#
# . ./build.vars and set -o errexit -o noglob are assumed.
# Order: stage1, runtime, libstdcpp_v3, full, native
# Order: stage1_x86_64_w64_mingw32, native_x86_64_w64_mingw32
#

pkgp_gcc_setup_env() {
	export MAKE="make LIBTOOL=slibtool";
	export	cbb_ldflags_for_target=--sysroot=${PKG_PREFIX}	\
		cbb_sysroot_for_libgcc=${PKG_PREFIX}		\
		cbb_target=${PKG_TARGET}			\
		cbb_neutral_libiberty=no			\
		cbb_xgcc_for_specs=${WORKDIR}/${PKG_BUILD_DIR}/gcc/xgcc;
	GCCTARGET_FLAGS="-DIN_TARGET_LIBRARY_BUILD --sysroot=${PKG_PREFIX}";
	GCCFLAGS="${CFLAGS:+${CFLAGS} }--include $(readlink -f ${WORKDIR}/cbb-gcc-${1}/libc/cbb-musl-pe.h)";
	for __ in CFLAGS CFLAGS_FOR_BUILD CPPFLAGS_FOR_BUILD CXXFLAGS CXXFLAGS_FOR_BUILD; do
		export "${__}=${GCCFLAGS}";
	done;
	for __ in CFLAGS_FOR_TARGET CPPFLAGS_FOR_TARGET CXXFLAGS_FOR_TARGET LIBCFLAGS_FOR_TARGET XGCC_FLAGS_FOR_TARGET; do
		export "${__}=${GCCTARGET_FLAGS}";
	done;
	for __ in cbb_cflags_for_stage1 cbb_cflags_for_stage2 cbb_cflags_for_stage3 cbb_cflags_for_stage4; do
		export "${__}=${CFLAGS_FOR_BUILD}" ;
	done;
	export CFLAGS CXXFLAGS CFLAGS_FOR_BUILD CPPFLAGS_FOR_BUILD CXXFLAGS_FOR_BUILD CFLAGS_FOR_TARGET XGCC_FLAGS_FOR_TARGET CPPFLAGS_FOR_TARGET CXXFLAGS_FOR_TARGET LIBCFLAGS_FOR_TARGET;
};

pkgp_gcc_configure() {
	secure_rm ${PKG_BUILD_DIR};
	insecure_mkdir ${PKG_BUILD_DIR};
	secure_cd ${PKG_BUILD_DIR};
	../cbb-gcc-${PKG_GCC_VERSION}/configure "${@}"	\
		--disable-bootstrap			\
		--disable-libmudflap			\
		--disable-multilib			\
		--disable-nls				\
		--disable-obsolete			\
		--disable-symvers			\
		--enable-__cxa_atexit			\
		--enable-canonical-system-headers	\
		--enable-debug				\
		--enable-gnu-indirect-function		\
		--enable-gnu-unique-object		\
		--enable-initfini-array			\
		--enable-languages=c,c++,objc,lto	\
		--enable-libstdcxx-debug		\
		--enable-lto				\
		--enable-multiarch			\
		--enable-secureplt			\
		--enable-shared				\
		--enable-threads=posix			\
		--target=${PKG_TARGET}			\
		--with-fpmath=sse;
	set_build_script_done configure clean -build;
};

pkg_gcc_stage1_x86_64_w64_mingw32_all() {
	pkg_gcc_stage1_all "${@}";
};

pkg_gcc_stage1_all() {
	if [ "${PKG_TARGET}" = "x86_64-w64-mingw32" ]; then
		PKG_GCC_VERSION="${PKG_GCC_STAGE1_X86_64_W64_MINGW32_VERSION}";
	else
		PKG_GCC_VERSION="${PKG_GCC_STAGE1_VERSION}";
	fi;
	# GCC, stage1.
	if ! is_build_script_done fetch; then
		fetch_git cbb-gcc-${PKG_GCC_VERSION}		\
			${GITROOT}/cbb/cbb-gcc-${PKG_GCC_VERSION};
		set_build_script_done fetch -configure;
	fi;
	if [ "${PKG_TARGET}" = "x86_64-w64-mingw32" ]; then
		set_build_dir cbb-gcc-${PKG_GCC_VERSION}_${PKG_TARGET} cross;
	else
		set_build_dir cbb-gcc-${PKG_GCC_VERSION} cross;
	fi;
	pkgp_gcc_setup_env "${PKG_GCC_VERSION}";
	if ! is_build_script_done configure; then
		insecure_mkdir ${PKG_PREFIX}/include;
		[ \! -d ${PKG_PREFIX}/usr ] &&			\
			ln -s -- . ${PKG_PREFIX}/usr;
		if [ "${PKG_TARGET}" = "x86_64-w64-mingw32" ]; then
			pkgp_gcc_configure				\
				--enable-sjlj-exceptions		\
				--prefix=${PREFIX}			\
				--with-sysroot=${PREFIX}/${PKG_TARGET}	\
				--without-headers;
		else
			pkgp_gcc_configure				\
				--disable-sjlj-exceptions		\
				--prefix=${PREFIX}			\
				--with-sysroot=${PREFIX}/${PKG_TARGET};
		fi;
	else
		cd ${PKG_BUILD_DIR};
	fi;
	if ! is_build_script_done clean; then
		make ${MAKEFLAGS} clean;
		set_build_script_done clean -build;
	fi;
	if ! is_build_script_done build; then
		make ${MAKEFLAGS} all-gcc;
		set_build_script_done build -install;
	fi;
	if ! is_build_script_done install; then
		make ${MAKEFLAGS} install-gcc;
		__="$(uname -s)";
		if [ "${__#*CYGWIN*}" != "${__}" ]; then
			ln -s -- ${PREFIX}/libexec/gcc/${PKG_TARGET}/${PKG_GCC_VERSION}/liblto_plugin.dll.a	\
				ln -s -- ${PREFIX}/libexec/gcc/${PKG_TARGET}/${PKG_GCC_VERSION}/liblto_plugin.so;
		fi;
		set_build_script_done install finish;
	fi;
};

pkg_gcc_runtime_all() {
	export MAKE="make LIBTOOL=slibtool";
	set_build_dir cbb-gcc-${PKG_GCC_RUNTIME_VERSION} cross;
	cd ${PKG_BUILD_DIR};
	# GCC, compiler runtime.
	if ! is_build_script_done build; then
		make ${MAKEFLAGS} all-target-libgcc;
		set_build_script_done build -install;
	fi;
	if ! is_build_script_done install; then
		make ${MAKEFLAGS} install-target-libgcc;
		set_build_script_done install finish;
	fi;
};

pkg_gcc_libstdcpp_v3_all() {
	export MAKE="make LIBTOOL=slibtool";
	set_build_dir cbb-gcc-${PKG_GCC_LIBSTDCPP_V3_VERSION} cross;
	cd ${PKG_BUILD_DIR};
	# GCC, libstdc++-v3.
	if ! is_build_script_done build; then
		make ${MAKEFLAGS} all-target-libstdc++-v3;
		set_build_script_done build -install;
	fi;
	if ! is_build_script_done install; then
		make ${MAKEFLAGS} install-target-libstdc++-v3;
		set_build_script_done install finish;
	fi;
};

pkg_gcc_full_all() {
	export MAKE="make LIBTOOL=slibtool";
	set_build_dir cbb-gcc-${PKG_GCC_FULL_VERSION} cross;
	cd ${PKG_BUILD_DIR};
	# GCC, everything else.
	if ! is_build_script_done build; then
		make ${MAKEFLAGS};
		set_build_script_done build -install;
	fi;
	if ! is_build_script_done install; then
		make ${MAKEFLAGS} install;
		set_build_script_done install finish;
	fi;
};

pkg_gcc_native_x86_64_w64_mingw32_all() {
	pkg_gcc_native_all "${@}";
};

pkg_gcc_native_all() {
	if [ "${PKG_TARGET}" = "x86_64-w64-mingw32" ]; then
		PKG_GCC_VERSION="${PKG_GCC_NATIVE_X86_W64_MINGW32_VERSION}";
	else
		PKG_GCC_VERSION="${PKG_GCC_NATIVE_VERSION}";
	fi;
	export MAKE="make LIBTOOL=slibtool";
	# GCC, native.
	if [ "${PKG_TARGET}" = "x86_64-w64-mingw32" ]; then
		set_build_dir cbb-gcc-${PKG_GCC_VERSION}_${PKG_TARGET} native;
	else
		set_build_dir cbb-gcc-${PKG_GCC_VERSION} native;
	fi;
	pkgp_gcc_setup_env "${PKG_GCC_VERSION}";
	if ! is_build_script_done configure; then
		insecure_mkdir ${PKG_PREFIX}/${PKG_TARGET};
		if [ \! -d ${PKG_PREFIX}/${PKG_TARGET}/usr ]; then
			ln -s -- . ${PKG_PREFIX}/${PKG_TARGET}/usr;
		fi;
		if [ "${PKG_TARGET}" = "x86_64-w64-mingw32" ]; then
			patch -b -d ${PKG_SUBDIR} -p1 < ${MIDIPIX_BUILD_PWD}/patches/${PKG_NAME}.local.patch;
			pkgp_gcc_configure				\
				--build=x86_64-unknown-linux-gnu	\
				--enable-sjlj-exceptions		\
				--host=x86_64-nt64-midipix		\
				--prefix=/				\
				--with-elf=${PKG_PREFIX}		\
				--with-gmp=${PKG_PREFIX}		\
				--with-mpc=${PKG_PREFIX}		\
				--with-mpfr=${PKG_PREFIX}		\
				--with-sysroot=				\
				--without-headers;
		else
			pkgp_gcc_configure				\
				--disable-sjlj-exceptions		\
				--prefix=/				\
				--with-elf=${PKG_PREFIX}		\
				--with-gmp=${PKG_PREFIX}		\
				--with-mpc=${PKG_PREFIX}		\
				--with-mpfr=${PKG_PREFIX}		\
				--with-sysroot=;
		fi;
	else
		cd ${PKG_BUILD_DIR};
	fi;
	if ! is_build_script_done clean; then
		make ${MAKEFLAGS} clean;
		set_build_script_done clean -build;
	fi;
	if ! is_build_script_done build; then
		make ${MAKEFLAGS} all-gcc;
		make ${MAKEFLAGS} all-target-libgcc;
		make ${MAKEFLAGS} all-target-libstdc++-v3;
		make ${MAKEFLAGS} all;
		set_build_script_done build -install;
	fi;
	if ! is_build_script_done install; then
		make ${MAKEFLAGS} DESTDIR=${PKG_PREFIX} install;
		set_build_script_done install finish;
	fi;
};

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