#
# set +o errexit -o noglob -o nounset is assumed.
# Order: stage1_host, runtime_host, libstdcpp_v3_host, full_host, full
# Order: stage1_mingw32, native_mingw32
#

#
# Private subroutines
#
pkgp_gcc_build_dir() { PKG_BUILD_DIR="${1}-${2}-${PKG_TARGET}"; };
pkgp_gcc_state_set() {
	printf "step unknown %s %s\n" "${PKG_NAME}" "${1}" >&3;
	ex_pkg_state_set "${PKG_NAME}" "${1}" ${2:+"${2}"};
};

pkgp_gcc_configure() {
	if ! rtl_fileop rm "${PKG_BASE_DIR}/${PKG_BUILD_DIR}"		\
	|| ! rtl_fileop mkdir "${PKG_BASE_DIR}/${PKG_BUILD_DIR}"	\
	|| ! rtl_fileop cd "${PKG_BASE_DIR}/${PKG_BUILD_DIR}"		\
	|| ! "../cbb-gcc-${PKG_VERSION}/configure" "${@}"		\
			--disable-bootstrap				\
			--disable-libmudflap				\
			--disable-multilib				\
			--disable-nls					\
			--disable-obsolete				\
			--disable-symvers				\
			--enable-canonical-system-headers		\
			--enable-__cxa_atexit				\
			--enable-debug					\
			--enable-gnu-indirect-function			\
			--enable-gnu-unique-object			\
			--enable-initfini-array				\
			--enable-languages=c,c++,fortran,objc,lto	\
			--enable-libstdcxx-debug			\
			--enable-lto					\
			--enable-multiarch				\
			--enable-secureplt				\
			--enable-shared					\
			--enable-threads=posix				\
			--target="${PKG_TARGET}"			\
			--with-fpmath=sse; then
		return 1;
	else
		pkgp_gcc_state_set "configure" "build";
	fi;
};

pkgp_gcc_setup_env() {
	local _vname="";
	for _vname in	CFLAGS CFLAGS_FOR_BUILD CPPFLAGS_FOR_BUILD			\
			CXXFLAGS CXXFLAGS_FOR_BUILD; do
		export "${_vname}=${GCCFLAGS}";
	done;
	for _vname in	CFLAGS_FOR_TARGET CPPFLAGS_FOR_TARGET CXXFLAGS_FOR_TARGET	\
			LIBCFLAGS_FOR_TARGET XGCC_FLAGS_FOR_TARGET; do
		export "${_vname}=${GCCTARGET_FLAGS}";
	done;
	for _vname in	cbb_cflags_for_stage1 cbb_cflags_for_stage2			\
			cbb_cflags_for_stage3 cbb_cflags_for_stage4; do
		export "${_vname}=${CFLAGS_FOR_BUILD}" ;
	done;
};

pkgp_gcc_setup_vars() {
	local _unwind_midipix_h="";
	export cbb_target="${PKG_TARGET}" MAKE="make LIBTOOL=slibtool";
	_unwind_midipix_h="$(readlink -f "${PKG_BASE_DIR}/cbb-gcc-${PKG_VERSION}/gcc/unwind-midipix.h")";
	case "${PKG_NAME}" in
	gcc_full)
		GCCTARGET_FLAGS="-DIN_TARGET_LIBRARY_BUILD --sysroot=${PKG_PREFIX}";
		GCCTARGET_FLAGS="$(rtl_lconcat "${GCCTARGET_FLAGS}" "--include=${_unwind_midipix_h}")";
		GCCTARGET_FLAGS="$(rtl_lconcat "${GCCTARGET_FLAGS}" "-DTARGET_PERSONALITY_FUNCTION")";
		GCCTARGET_FLAGS="$(rtl_lconcat "${GCCTARGET_FLAGS}" "-DTARGET_PERSONALITY_FUNCTION_MIDIPIX")";
		GCCTARGET_FLAGS="$(rtl_lconcat "${GCCTARGET_FLAGS}" "${DEFAULT_CFLAGS_DEBUG_RUNTIME}")";
		export	cbb_ldflags_for_target=--sysroot="${PKG_PREFIX}"			\
			cbb_sysroot_for_libgcc="${PKG_PREFIX}"					\
			cbb_xgcc_for_specs="${PKG_TARGET}-gcc"					\
			sysroot_headers_suffix="${PKG_PREFIX}"; ;;
	gcc_stage1_cross_mingw32)
		GCCTARGET_FLAGS="-DIN_TARGET_LIBRARY_BUILD --sysroot=${PREFIX_MINGW32} -midata";
		export	cbb_ldflags_for_target=--sysroot="${PREFIX_MINGW32}"			\
			cbb_neutral_libiberty=no						\
			cbb_sysroot_for_libgcc="${PREFIX_MINGW32}"				\
			cbb_xgcc_for_specs="${PKG_BASE_DIR}/${PKG_BUILD_DIR}/gcc/xgcc"; ;;
	gcc_stage1_host)
		GCCTARGET_FLAGS="-DIN_TARGET_LIBRARY_BUILD --sysroot=${PREFIX_CROSS}";
		GCCTARGET_FLAGS="$(rtl_lconcat "${GCCTARGET_FLAGS}" "--include=${_unwind_midipix_h}")";
		GCCTARGET_FLAGS="$(rtl_lconcat "${GCCTARGET_FLAGS}" "-DTARGET_PERSONALITY_FUNCTION")";
		GCCTARGET_FLAGS="$(rtl_lconcat "${GCCTARGET_FLAGS}" "-DTARGET_PERSONALITY_FUNCTION_MIDIPIX")";
		GCCTARGET_FLAGS="$(rtl_lconcat "${GCCTARGET_FLAGS}" "${DEFAULT_CFLAGS_DEBUG_RUNTIME}")";
		export	cbb_ldflags_for_target="--sysroot=${PREFIX_CROSS}"			\
			cbb_neutral_libiberty="no"						\
			cbb_sysroot_for_libgcc="${PREFIX_CROSS}"				\
			cbb_xgcc_for_specs="${PKG_BASE_DIR}/${PKG_BUILD_DIR}/gcc/xgcc"		\
			LDFLAGS="${PKG_LDFLAGS_CONFIGURE}"; ;;
	gcc_stage1_native_mingw32)
		GCCTARGET_FLAGS="-DIN_TARGET_LIBRARY_BUILD --sysroot=${PKG_PREFIX} -midata";
		export	cbb_ldflags_for_target=--sysroot="${PKG_PREFIX}"			\
			cbb_neutral_libiberty=no						\
			cbb_sysroot_for_libgcc="${PKG_PREFIX}"					\
			cbb_xgcc_for_specs="${PKG_TARGET}-gcc"; ;;
	esac;
	GCCFLAGS="$(rtl_lconcat "${PKG_CFLAGS_CONFIGURE}"					\
		"--include $(readlink -f "${PKG_BASE_DIR}/cbb-gcc-${PKG_VERSION}/libc/cbb-musl-pe.h")")";
};

pkgp_gcc_stage1_all() {
	local _restart_at="${1}" _rc=0;
	case "${PKG_NAME}" in
	gcc_stage1_cross_mingw32)
		pkgp_gcc_build_dir "cbb-gcc-${PKG_VERSION}" mingw32; ;;
	gcc_stage1_host)
		if ! rtl_fileop ln_symbolic . "${PREFIX_CROSS}/usr"\
		|| ! rtl_fileop mkdir "${PREFIX_CROSS}/usr/include"\
		|| ! pkgp_gcc_build_dir "cbb-gcc-${PKG_VERSION}" cross; then
			_rc=1;
		fi; ;;
	gcc_stage1_native_mingw32)
		pkgp_gcc_build_dir "cbb-gcc-${PKG_VERSION}" native; ;;
	esac;
	if [ "${_rc}" -ne 0 ]; then
		return 1;
	fi;
	if ! ex_pkg_state_test "${PKG_NAME}" fetch "${_restart_at}"; then
		if ! pkg_fetch_download_dlcache_subdir; then
			return 1;
		elif ! rtl_fetch_urls_git									\
				"${BUILD_DLCACHEDIR}/${PKG_NAME}" "${DEFAULT_GIT_ARGS}" "${PKG_BASE_DIR}"	\
				"${PKG_NAME}" "${PKG_MIRRORS_GIT:-}"						\
				"cbb-gcc-${PKG_VERSION}=${PKG_GITROOT}/cbb/cbb-gcc-${PKG_VERSION}"; then
			return 1;
		else
			pkgp_gcc_state_set "fetch" "patch";
		fi;
	fi;
	if ! ex_pkg_state_test "${PKG_NAME}" patch "${_restart_at}"; then
		if [ -e "${MIDIPIX_BUILD_PWD}/patches/${PKG_NAME}.local.patch" ]; then
			patch -b -d "${PKG_BASE_DIR}" -p0 < "${MIDIPIX_BUILD_PWD}/patches/${PKG_NAME}.local.patch" || return 1;
		fi;
		pkgp_gcc_state_set "patch" "configure";
	fi;
	pkgp_gcc_setup_vars; pkgp_gcc_setup_env;
	if ! ex_pkg_state_test "${PKG_NAME}" configure "${_restart_at}"; then
		case "${PKG_NAME}" in
		gcc_stage1_cross_mingw32)
			pkgp_gcc_configure				\
				--enable-sjlj-exceptions		\
				--prefix="${PREFIX}"			\
				--with-gmp="${PREFIX}"			\
				--with-mpc="${PREFIX}"			\
				--with-mpfr="${PREFIX}"			\
				--with-sysroot="${PREFIX_MINGW32}"	\
				--without-headers; ;;
		gcc_stage1_host)
			pkgp_gcc_configure				\
				--disable-sjlj-exceptions		\
				--prefix="${PREFIX}"			\
				--with-gmp="${PREFIX}"			\
				--with-mpc="${PREFIX}"			\
				--with-mpfr="${PREFIX}"			\
				--with-sysroot="${PREFIX_CROSS}"; ;;
		gcc_stage1_native_mingw32)
			pkgp_gcc_configure				\
				--build=x86_64-unknown-linux-gnu	\
				--enable-sjlj-exceptions		\
				--host=x86_64-nt64-midipix		\
				--prefix=/				\
				--with-elf="${PKG_PREFIX}"		\
				--with-gmp="${PKG_PREFIX}"		\
				--with-mpc="${PKG_PREFIX}"		\
				--with-mpfr="${PKG_PREFIX}"		\
				--with-sysroot=				\
				--without-headers; ;;
		esac;
		if [ "${?}" -ne 0 ]; then
			return 1;
		fi;
	else	rtl_fileop cd "${PKG_BASE_DIR}/${PKG_BUILD_DIR}" || return 1;
	fi;
	if ! ex_pkg_state_test "${PKG_NAME}" build "${_restart_at}"; then
		make ${PKG_MAKEFLAGS_BUILD} "all-gcc" || return 1;
		pkgp_gcc_state_set "build" "install_subdirs";
	fi;
	if ! ex_pkg_state_test "${PKG_NAME}" install_subdirs "${_restart_at}"; then
		pkg_install_subdirs || return 1;
		pkgp_gcc_state_set "install_subdirs" "install_make";
	fi;
	if ! ex_pkg_state_test "${PKG_NAME}" install_make "${_restart_at}"; then
		case "${PKG_NAME}" in
		gcc_stage1_cross_mingw32)
			make ${PKG_MAKEFLAGS_BUILD} "prefix=${PKG_DESTDIR}" "install-gcc"; ;;
		gcc_stage1_host)
			make ${PKG_MAKEFLAGS_BUILD} "prefix=${PKG_DESTDIR}" "install-gcc"; ;;
		gcc_stage1_native_mingw32)
			make ${PKG_MAKEFLAGS_BUILD} "prefix=${PKG_DESTDIR}" "install-gcc"; ;;
		esac;
		if [ "${?}" -ne 0 ]; then
			return 1;
		else	case "$(uname -s)" in
			CYGWIN_*)
				if ! rtl_fileop ln_symbolic "${PKG_DESTDIR}/libexec/gcc/${PKG_TARGET}/${PKG_VERSION}/liblto_plugin.dll.a"\
				|| ! rtl_fileop ln_symbolic "${PKG_DESTDIR}/libexec/gcc/${PKG_TARGET}/${PKG_VERSION}/liblto_plugin.so"; then
					return 1;
				fi; ;;
			esac;
			pkgp_gcc_state_set "install_make" "install";
		fi;
	fi;
	if ! ex_pkg_state_test "${PKG_NAME}" install "${_restart_at}"; then
		pkg_install || return 1;
		pkgp_gcc_state_set "install";
	fi;
	pkgp_gcc_state_set "finish";
};


pkg_gcc_full_all() {
	local _restart_at="${1}" _configure_host="" _vis_hide="vis_hide=-fvisibility=hidden";
	export MAKE="make LIBTOOL=slibtool ${_vis_hide}";
	pkgp_gcc_build_dir "cbb-gcc-${PKG_VERSION}" native;
	if ! ex_pkg_state_test "${PKG_NAME}" fetch "${_restart_at}"; then
		if ! pkg_fetch_download_dlcache_subdir; then
			return 1;
		elif ! rtl_fetch_urls_git						\
				"${BUILD_DLCACHEDIR}/${PKG_NAME}" "${DEFAULT_GIT_ARGS}"	\
				"${PKG_BASE_DIR}" "${PKG_NAME}"				\
				"${PKG_MIRRORS_GIT:-}"					\
				"cbb-gcc-${PKG_VERSION}=${PKG_GITROOT}/cbb/cbb-gcc-${PKG_VERSION}"; then
			return 1;
		else
			pkgp_gcc_state_set "fetch" "patch";
		fi;
	fi;
	if ! ex_pkg_state_test "${PKG_NAME}" patch "${_restart_at}"; then
		if [ -e "${MIDIPIX_BUILD_PWD}/patches/${PKG_NAME}.local.patch" ]; then
			patch -b -d "${PKG_BASE_DIR}" -p0 < "${MIDIPIX_BUILD_PWD}/patches/${PKG_NAME}.local.patch" || return 1;
		fi;
		pkgp_gcc_state_set "patch" "configure";
	fi;
	pkgp_gcc_setup_vars; pkgp_gcc_setup_env;
	if ! ex_pkg_state_test "${PKG_NAME}" configure "${_restart_at}"; then
		rtl_fileop mkdir "${PKG_PREFIX}/${PKG_TARGET}" || return 1;
		if [ \! -d "${PKG_PREFIX}/${PKG_TARGET}/usr" ]; then
			rtl_fileop ln_symbolic . "${PKG_PREFIX}/${PKG_TARGET}/usr" || return 1;
		fi;
		case "${ARCH}" in
		nt32)	_configure_host="i686-nt32-midipix"; ;;
		nt64)	_configure_host="x86_64-nt64-midipix"; ;;
		esac;
		pkgp_gcc_configure				\
			--disable-sjlj-exceptions		\
			--host="${_configure_host}"		\
			--prefix=/				\
			--with-elf="${PKG_PREFIX}"		\
			--with-gmp="${PKG_PREFIX}"		\
			--with-mpc="${PKG_PREFIX}"		\
			--with-mpfr="${PKG_PREFIX}"		\
			--with-sysroot="" || return 1;
	else	rtl_fileop cd "${PKG_BASE_DIR}/${PKG_BUILD_DIR}" || return 1;
	fi;
	if ! ex_pkg_state_test "${PKG_NAME}" build "${_restart_at}"; then
		if ! make ${PKG_MAKEFLAGS_BUILD} "all-gcc"\
		|| ! make ${PKG_MAKEFLAGS_BUILD} "all-target-libgcc" ${_vis_hide}\
		|| ! make ${PKG_MAKEFLAGS_BUILD} "all-target-libstdc++-v3"\
		|| ! make ${PKG_MAKEFLAGS_BUILD} "all-target-libgfortran"\
		|| ! make ${PKG_MAKEFLAGS_BUILD} "all"; then
			return 1;
		else	pkgp_gcc_state_set "build" "install_subdirs";
		fi;
	fi;
	if ! ex_pkg_state_test "${PKG_NAME}" install_subdirs "${_restart_at}"; then
		pkg_install_subdirs || return 1;
		pkgp_gcc_state_set "install_subdirs" "install_make";
	fi;
	if ! ex_pkg_state_test "${PKG_NAME}" install_make "${_restart_at}"; then
		make ${PKG_MAKEFLAGS_BUILD} "prefix=${PKG_DESTDIR}" "install" || return 1;
		pkgp_gcc_state_set "install_make" "install";
	fi;
	if ! ex_pkg_state_test "${PKG_NAME}" install "${_restart_at}"; then
		pkg_install || return 1;
		pkgp_gcc_state_set "install";
	fi;
	pkgp_gcc_state_set "finish";
};

pkg_gcc_full_host_all() {
	local _restart_at="${1}";
	export MAKE="make LIBTOOL=slibtool";
	if ! pkgp_gcc_build_dir "cbb-gcc-${PKG_VERSION}" cross\
	|| ! rtl_fileop cd "${PKG_BASE_DIR}/${PKG_BUILD_DIR}"; then
		return 1;
	else	if ! ex_pkg_state_test "${PKG_NAME}" build "${_restart_at}"; then
			make ${PKG_MAKEFLAGS_BUILD} || return 1;
			pkgp_gcc_state_set "build" "install_subdirs";
		fi;
		if ! ex_pkg_state_test "${PKG_NAME}" install_subdirs "${_restart_at}"; then
			pkg_install_subdirs || return 1;
			pkgp_gcc_state_set "install_subdirs" "install_make";
		fi;
		if ! ex_pkg_state_test "${PKG_NAME}" install_make "${_restart_at}"; then
			make ${PKG_MAKEFLAGS_BUILD} "prefix=${PKG_DESTDIR}" "install" || return 1;
			pkgp_gcc_state_set "install_make" "install";
		fi;
		if ! ex_pkg_state_test "${PKG_NAME}" install "${_restart_at}"; then
			pkg_install || return 1;
			pkgp_gcc_state_set "install";
		fi;
		pkgp_gcc_state_set "finish";
	fi;
};

pkg_gcc_libstdcpp_v3_host_all() {
	local _restart_at="${1}";
	export MAKE="make LIBTOOL=slibtool";
	if ! pkgp_gcc_build_dir "cbb-gcc-${PKG_VERSION}" cross\
	|| ! rtl_fileop cd "${PKG_BASE_DIR}/${PKG_BUILD_DIR}"; then
		return 1;
	else	if ! ex_pkg_state_test "${PKG_NAME}" build "${_restart_at}"; then
			make ${PKG_MAKEFLAGS_BUILD} "all-target-libstdc++-v3" || return 1;
			pkgp_gcc_state_set "build" "install_subdirs";
		fi;
		if ! ex_pkg_state_test "${PKG_NAME}" install_subdirs "${_restart_at}"; then
			pkg_install_subdirs || return 1;
			pkgp_gcc_state_set "install_subdirs" "install_make";
		fi;
		if ! ex_pkg_state_test "${PKG_NAME}" install_make "${_restart_at}"; then
			make ${PKG_MAKEFLAGS_BUILD} "prefix=${PKG_DESTDIR}" "install-target-libstdc++-v3" || return 1;
			pkgp_gcc_state_set "install_make" "install";
		fi;
		if ! ex_pkg_state_test "${PKG_NAME}" install "${_restart_at}"; then
			pkg_install || return 1;
			pkgp_gcc_state_set "install";
		fi;
		pkgp_gcc_state_set "finish";
	fi;
};

pkg_gcc_runtime_host_all() {
	local _restart_at="${1}" _vis_hide="vis_hide=-fvisibility=hidden";
	export MAKE="make LIBTOOL=slibtool ${_vis_hide}";
	if ! pkgp_gcc_build_dir "cbb-gcc-${PKG_VERSION}" cross\
	|| ! rtl_fileop cd "${PKG_BASE_DIR}/${PKG_BUILD_DIR}"; then
		return 1;
	else	if ! ex_pkg_state_test "${PKG_NAME}" build "${_restart_at}"; then
			make ${PKG_MAKEFLAGS_BUILD} "all-target-libgcc" ${_vis_hide} || return 1;
			pkgp_gcc_state_set "build" "install_subdirs";
		fi;
		if ! ex_pkg_state_test "${PKG_NAME}" install_subdirs "${_restart_at}"; then
			pkg_install_subdirs || return 1;
			pkgp_gcc_state_set "install_subdirs" "install_make";
		fi;
		if ! ex_pkg_state_test "${PKG_NAME}" install_make "${_restart_at}"; then
			make ${PKG_MAKEFLAGS_BUILD} "prefix=${PKG_DESTDIR}" "install-target-libgcc" || return 1;
			pkgp_gcc_state_set "install_make" "install";
		fi;
		if ! ex_pkg_state_test "${PKG_NAME}" install "${_restart_at}"; then
			pkg_install || return 1;
			pkgp_gcc_state_set "install";
		fi;
		pkgp_gcc_state_set "finish";
	fi;
};

pkg_gcc_stage1_all() {
	pkgp_gcc_stage1_all "${@}";
};

pkg_gcc_stage1_cross_mingw32_all() {
	if ! rtl_fileop ln_symbolic . "${PKG_PREFIX}/x86_64-w64-mingw32/mingw"\
	|| ! rtl_fileop mkdir "${PKG_DESTDIR}/x86_64-w64-mingw32"\
	|| ! rtl_fileop ln_symbolic . "${PKG_DESTDIR}/x86_64-w64-mingw32/mingw"\
	|| ! rtl_fileop mkdir "${PKG_PREFIX}/x86_64-w64-mingw32/include"\
	|| ! pkgp_gcc_stage1_all "${@}"; then
		return 1;
	fi;
};

pkg_gcc_stage1_host_all() {
	pkgp_gcc_stage1_all "${@}";
};

pkg_gcc_stage1_native_mingw32_all() {
	if ! rtl_fileop ln_symbolic . "${PKG_PREFIX}/x86_64-w64-mingw32/mingw"\
	|| ! rtl_fileop mkdir "${PKG_DESTDIR}/x86_64-w64-mingw32"\
	|| ! rtl_fileop ln_symbolic . "${PKG_DESTDIR}/x86_64-w64-mingw32/mingw"\
	|| ! rtl_fileop mkdir "${PKG_PREFIX}/x86_64-w64-mingw32/include"\
	|| ! pkgp_gcc_stage1_all "${@}"; then
		return 1;
	fi;
};

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