aports/community/gcc-cross-embedded/APKBUILD

# Maintainer: Marian Buschsieweke <marian.buschsieweke@ovgu.de>
# Based upon Alpine's avr-gcc and Arch Linux's arm-none-eabi-gcc, to which
# the following people contributed:
# Contributor: Pedro Filipe <xpecex@outlook.com>
# Contributor: Stefan Wagner <stw@bit-strickerei.de>
# Contributor: Anatol Pomozov <anatol.pomozov@gmail.com>
# Contributor: Martin Schmölzer <mschmoelzer@gmail.com>

# mips-mti-elf fails to build newlib right now
_targets="
	aarch64-none-elf
	arm-none-eabi
	mips-mti-elf
	msp430-elf
	riscv-none-elf
	"
# or1k-elf fails to build on 32-bit architectures
case "$CARCH" in
	x86_64|aarch64|ppc64le) _targets="$_targets or1k-elf"
esac
pkgname=gcc-cross-embedded
pkgver=11.2.0
pkgrel=2
pkgdesc="The GNU Compiler Collection for embedded targets"
url="https://gcc.gnu.org/"
depends="gcc"
makedepends="bash linux-headers gmp-dev mpfr-dev mpc1-dev zlib-dev isl-dev"
arch="all !s390x !riscv64" # fails on s390x with error message:
# 'internal compiler error: Segmentation fault'
license="GPL-3.0-or-later"
for target in $_targets; do
	targetnorm="${target//-/_}"
	subpackages="gcc-$target:$targetnorm $subpackages"
	makedepends="$makedepends binutils-$target newlib-$target-stage1"
done

source="https://mirrors.kernel.org/gnu/gcc/gcc-$pkgver/gcc-$pkgver.tar.xz
	0001-RISC-V-Fixing-misa-spec-PR-target-104853.patch
	0002-RISC-V-Always-pass-misa-spec-to-assembler-PR104219.patch"

options="!check"

builddir="$srcdir/gcc-$pkgver"

prepare() {
	default_prepare

	# hack! - some configure tests for header files using "$CPP $CPPFLAGS"
	for dir in libiberty gcc; do
		sed -i "/ac_cpp=/s/\$CPPFLAGS/\$CPPFLAGS -O2/" $dir/configure
	done
}

_build_gcc() {
	case "$target" in
		# Support M and R architecture profiles for ARM
		arm-none-eabi) _target_specific_flags="--with-multilib-list=rmprofile" ;;
		*) _target_specific_flags="" ;;
	esac

	msg "Running ./configure for $target"
	"$builddir"/configure \
		--target=$target \
		--prefix=/usr \
		--with-sysroot=/usr/$target \
		--with-native-system-header-dir=/include \
		--with-headers=/usr/$target/include \
		--with-python-dir=share/gcc-$target \
		--libexecdir=/usr/lib \
		--infodir=/deleteme/info \
		--htmldir=/deleteme/html \
		--pdfdir=/deleteme/pdf \
		--mandir=/deleteme/man \
		--enable-languages=c,c++ \
		--enable-lto \
		--enable-plugins \
		--enable-gnu-indirect-function \
		--disable-decimal-float \
		--disable-libffi \
		--disable-libgomp \
		--disable-libmudflap \
		--disable-libquadmath \
		--disable-libssp \
		--disable-libstdcxx-pch \
		--disable-nls \
		--disable-shared \
		--disable-threads \
		--disable-werror \
		--with-gmp \
		--with-gnu-as \
		--with-gnu-ld \
		--with-host-libstdcxx='-static-libgcc -Wl,-Bstatic,-lstdc++,-Bdynamic -lm' \
		--with-isl \
		--with-libelf \
		--with-mpc \
		--with-mpfr \
		--with-newlib \
		--with-system-zlib \
		--with-pkgversion='Alpine Linux' \
		$_target_specific_flags

	msg "Running make for $target"
	make INHIBIT_LIBC_CFLAGS='-DUSE_TM_CLONE_REGISTRY=0'
}

build() {
	for target in $_targets; do
		# Build "regular" variant
		workingdir="$srcdir/build-$target"
		mkdir "$workingdir"
		cd "$workingdir"
		export CFLAGS_FOR_TARGET='-pipe -Os -ffunction-sections -fdata-sections'
		export CXXFLAGS_FOR_TARGET='-pipe -Os -ffunction-sections -fdata-sections'
		_build_gcc

		# Rebuild without exceptions to generate nano variant of libstc++
		workingdir="$srcdir/build-$target-nano"
		mkdir "$workingdir"
		cd "$workingdir"
		export CFLAGS_FOR_TARGET='-pipe -Os -ffunction-sections -fdata-sections  -fno-exceptions'
		export CXXFLAGS_FOR_TARGET='-pipe -Os -ffunction-sections -fdata-sections  -fno-exceptions'
		_build_gcc
	done
}

package() {
	for target in $_targets; do
		depends="$depends gcc-$target"
	done
	mkdir -p "$pkgdir"
}

_install_subpkg() {
	target="${subpkgname#gcc-}"
	pkgdesc="The GNU Compiler Collection for $target targets"
	depends="$depends binutils-$target"
	workingdir="$srcdir/build-$target"
	cd "$workingdir"
	make install DESTDIR="$subpkgdir" -j1

	# install nano-variant into temporary folder to obtain libstdc++ from there
	workingdir="$srcdir/build-$target-nano"
	cd "$workingdir"
	make install DESTDIR="$subpkgdir-nano" -j1

	# Fetch libstdc++ from nano variant
	multilibs=$($subpkgdir/usr/bin/$target-gcc -print-multi-lib 2>/dev/null)
	for multilib in $multilibs; do
		dir="${multilib%%;*}"
		from_dir=$subpkgdir-nano/usr/$target/lib/$dir
		to_dir=$subpkgdir/usr/$target/lib/$dir
		cp -f $from_dir/libstdc++.a $to_dir/libstdc++_nano.a
		cp -f $from_dir/libsupc++.a $to_dir/libsupc++_nano.a
	done

	# Delete documentation. (The user can use the host GCC doc instead)
	rm -rf "$subpkgdir"/deleteme
	# Delete libcc1.so*, which is already part of the host's gcc
	rm -f "$subpkgdir"/usr/lib/libcc1.so*

	# Strip libs using target binutils
	find "$subpkgdir"/usr/lib -type f -name "*.a" -exec /usr/bin/$target-strip --strip-debug '{}' \;

	# Strip executables using host binutils
	find "$subpkgdir"/usr/bin -type f -executable -exec strip '{}' \;
}

arm_none_eabi() {
	_install_subpkg
}

mips_mti_elf() {
	_install_subpkg
}

msp430_elf() {
	_install_subpkg
}

or1k_elf() {
	_install_subpkg
}

riscv_none_elf() {
	_install_subpkg
}

aarch64_none_elf() {
	_install_subpkg
}

sha512sums="
d53a0a966230895c54f01aea38696f818817b505f1e2bfa65e508753fcd01b2aedb4a61434f41f3a2ddbbd9f41384b96153c684ded3f0fa97c82758d9de5c7cf  gcc-11.2.0.tar.xz
834c3a0e6163e91d485eceb7c3438a25e43d8be888ed3d6b96f50e5386926ba1443c5fe5f0b731ecd6dad809359952bd543cd22124deccc476ae6f6945b8f2bc  0001-RISC-V-Fixing-misa-spec-PR-target-104853.patch
0dcf680dec1989685073c7123278c0bb335d1caae75e4a226a490f26f5a0502c511e60f5a2a269f565a172fb8f5b5d96a13f5bf507d9c354c37f7e332d7bd3ed  0002-RISC-V-Always-pass-misa-spec-to-assembler-PR104219.patch
"