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# Maintainer: Adelie Platform Group <adelie-devel@lists.adelielinux.org>
pkgname=gcc
pkgver=8.3.0
[ "$BOOTSTRAP" = "nolibc" ] && pkgname="gcc-pass2"
[ "$CBUILD" != "$CHOST" ] && _cross="-$CARCH" || _cross=""
[ "$CHOST" != "$CTARGET" ] && _target="-$CTARGET_ARCH" || _target=""

pkgname="$pkgname$_target"
pkgrel=1
pkgdesc="The GNU Compiler Collection"
url="https://gcc.gnu.org"
arch="all"
license="GPL-3.0+ AND LGPL-2.1+"
_gccrel=$pkgver-r$pkgrel
depends="binutils$_target isl"
makedepends_build="gcc$_cross g++$_cross byacc flex texinfo zip gmp-dev
	mpfr-dev mpc1-dev zlib-dev"
makedepends_host="linux-headers gmp-dev mpfr-dev mpc1-dev isl-dev zlib-dev
	libucontext-dev"
subpackages=" "
[ "$CHOST" = "$CTARGET" ] && subpackages="gcc-doc$_target gcc-lang$_target"
replaces="libstdc++ binutils"
options="$options !check !dbg strip toolchain"

: ${LANG_CXX:=true}
: ${LANG_OBJC:=true}
: ${LANG_GO:=true}
: ${LANG_FORTRAN:=true}
: ${LANG_ADA:=true}

LIBGOMP=true
LIBGCC=true
LIBATOMIC=true
LIBITM=true

if [ "$CHOST" != "$CTARGET" ]; then
	if [ "$BOOTSTRAP" = nolibc ]; then
		LANG_CXX=false
		LANG_ADA=false
		LIBGCC=false
		_builddir="$srcdir/build-cross-pass2"
	else
		_builddir="$srcdir/build-cross-final"
	fi
	LANG_OBJC=false
	LANG_GO=false
	LANG_FORTRAN=false
	LIBGOMP=false
	LIBATOMIC=false
	LIBITM=false

	# reset target flags (should be set in crosscreate abuild)
	# fixup flags. seems gcc treats CPPFLAGS as global without
	# _FOR_xxx variants. wrap it in CFLAGS and CXXFLAGS.
	export CFLAGS="$CPPFLAGS $CFLAGS"
	export CXXFLAGS="$CPPFLAGS $CXXFLAGS"
	unset CPPFLAGS
	export CFLAGS_FOR_TARGET=" "
	export CXXFLAGS_FOR_TARGET=" "
	export LDFLAGS_FOR_TARGET=" "

	STRIP_FOR_TARGET="$CTARGET-strip"
elif [ "$CBUILD" != "$CHOST" ]; then
	# fixup flags. seems gcc treats CPPFLAGS as global without
	# _FOR_xxx variants. wrap it in CFLAGS and CXXFLAGS.
	export CFLAGS="$CPPFLAGS $CFLAGS"
	export CXXFLAGS="$CPPFLAGS $CXXFLAGS"
	unset CPPFLAGS

	# reset flags and cc for build
	export CC_FOR_BUILD="gcc"
	export CXX_FOR_BUILD="g++"
	export CFLAGS_FOR_BUILD=" "
	export CXXFLAGS_FOR_BUILD=" "
	export LDFLAGS_FOR_BUILD=" "
	export CFLAGS_FOR_TARGET=" "
	export CXXFLAGS_FOR_TARGET=" "
	export LDFLAGS_FOR_TARGET=" "

	# Languages that do not need bootstrapping
	LANG_OBJC=false
	LANG_GO=false
	LANG_FORTRAN=false

	STRIP_FOR_TARGET=${CROSS_COMPILE}strip
	_builddir="$srcdir/build-cross-native"
else
	STRIP_FOR_TARGET=${CROSS_COMPILE}strip
	_builddir="$srcdir/build"
fi

# libitm has TEXTRELs in ARM build, so disable for now
# gcc itself has TEXTRELs in m68k; until this is fixed, we need it
case "$CTARGET_ARCH" in
arm*)		LIBITM=false ;;
m68k)		options="$options textrels" ;;
esac

# Fortran uses libquadmath if toolchain has __float128
# currently on x86, x86_64 and ia64
LIBQUADMATH=$LANG_FORTRAN
case "$CTARGET_ARCH" in
pmmx | x86 | x86_64)	LIBQUADMATH=$LANG_FORTRAN ;;
*)			LIBQUADMATH=false ;;
esac

# libatomic is a dependency for openvswitch
$LIBATOMIC && subpackages="$subpackages libatomic::$CTARGET_ARCH"
$LIBGCC && subpackages="$subpackages libgcc::$CTARGET_ARCH"
$LIBQUADMATH && subpackages="$subpackages libquadmath::$CTARGET_ARCH"
if $LIBGOMP; then
	depends="$depends libgomp=$_gccrel"
	subpackages="$subpackages libgomp::$CTARGET_ARCH"
fi

_languages=c
if $LANG_CXX; then
	subpackages="$subpackages libstdc++:libcxx:$CTARGET_ARCH g++$_target:gpp"
	_languages="$_languages,c++"
fi
if $LANG_OBJC; then
	subpackages="$subpackages libobjc::$CTARGET_ARCH gcc-objc$_target:objc"
	_languages="$_languages,objc"
fi
if $LANG_GO; then
	subpackages="$subpackages libgo::$CTARGET_ARCH gcc-go$_target:go"
	_languages="$_languages,go"
fi
if $LANG_FORTRAN; then
	subpackages="$subpackages libgfortran::$CTARGET_ARCH gfortran$_target:gfortran"
	_languages="$_languages,fortran"
fi
if $LANG_ADA; then
	subpackages="$subpackages libgnat::$CTARGET_ARCH gcc-gnat$_target:gnat"
	_languages="$_languages,ada"
	makedepends_build="$makedepends_build gcc-gnat gcc-gnat$_cross"
fi
makedepends="$makedepends_build $makedepends_host"

source="https://ftp.gnu.org/gnu/gcc/gcc-$pkgver/gcc-$pkgver.tar.xz

	0002-posix_memalign.patch
	0008-s390x-muslldso.patch
	0009-microblaze-pr65649.patch
	0010-ldbl128-config.patch
	0011-m68k.patch
	0012-static-pie.patch
	0016-invalid-tls-model.patch

	002_all_default-relro.patch
	005_all_default-as-needed.patch
	006_as-needed-gold.patch
	011_all_default-warn-format-security.patch
	012_all_default-warn-trampolines.patch
	020_all_msgfmt-libstdc++-link.patch
	051_all_libiberty-pic.patch

	201-ada.patch
	205-nopie.patch

	libgcc-always-build-gcceh.a.patch
	gcc-4.9-musl-fortify.patch
	gcc-6.1-musl-libssp.patch
	gcc-pure64.patch

	fix-cxxflags-passing.patch
	ada-shared.patch

	320-libffi-gnulinux.patch
	330-gccgo-link-to-ucontext.patch
	331-gccgo-use-real-off_t-type.patch
	332-gccgo-sysinfo.patch
	333-gccgo-signal-ppc64.patch
	334-gccgo-signal-shell.patch
	335-gccgo-signal-ppc32.patch
	336-gccgo-mmap64.patch
	337-gccgo-signal-sig34.patch
	338-gccgo-syscall.patch
	339-gccgo-errstr.patch
	340-gccgo-time64-stat.patch

	add-classic_table-support.patch
	disable-multiarch-ppc32.patch
	gcc-5.4.0-locale.patch

	backport-r267157-posix-conformant-snprintf.patch
	backport-r268048-memcpy-bounds.patch
	"

# we build out-of-tree
_gccdir="$srcdir"/gcc-$pkgver
_gcclibdir=/usr/lib/gcc/${CTARGET}/$pkgver
_gcclibexec=/usr/libexec/gcc/${CTARGET}/$pkgver

prepare() {
	cd "$_gccdir"

	_err=
	for i in $source; do
		case "$i" in
		*.patch)
			msg "Applying $i"
			patch -p1 -F3 -i "$srcdir"/$i || _err="$_err $i"
			;;
		esac
	done

	if [ -n "$_err" ]; then
		error "The following patches failed:"
		for i in $_err; do
			echo "  $i"
		done
		return 1
	fi

	echo ${pkgver} > gcc/BASE-VER
}

build() {
	local _arch_configure=
	local _libc_configure=
	local _cross_configure=
	local _bootstrap_configure=
	local _hash_style=gnu
	local _symvers=

	cd "$_gccdir"

	case "$CTARGET" in
	aarch64-*-*-*)		_arch_configure="--with-arch=armv8-a --with-abi=lp64 --enable-fix-cortex-a53-835769 --enable-fix-cortex-a53-843419";;
	armv5-*-*-*eabi)	_arch_configure="--with-arch=armv5te --with-tune=arm926ej-s --with-float=soft --with-abi=aapcs-linux";;
	armv6-*-*-*eabihf)	_arch_configure="--with-arch=armv6zk --with-tune=arm1176jzf-s --with-fpu=vfp --with-float=hard --with-abi=aapcs-linux";;
	armv7-*-*-*eabihf)	_arch_configure="--with-arch=armv7-a --with-tune=generic-armv7-a --with-fpu=vfpv3-d16 --with-float=hard --with-abi=aapcs-linux --with-mode=thumb";;
	m68k-*-*-*)		_arch_configure="--with-arch=68020 --with-tune=68020-40";;
	mipsel-*-*-*)		_arch_configure="--with-arch-32=mips2 --with-tune-32=mips32 --with-fp-32=32 --with-mips-plt --with-float=hard --with-abi=32";;
	mips-*-*-*)		_arch_configure="--with-arch=mips3 --with-mips-plt --with-abi=32"; _hash_style="sysv";;
	mips32el-*-*-*)		_arch_configure="--with-arch=mips32 --with-mips-plt --with-abi=32"; _hash_style="sysv";;
	powerpc-*-*-*)		_arch_configure="--enable-secureplt --enable-decimal-float=no";;
	powerpc64*-*-*-*)	_arch_configure="--with-abi=elfv2 --enable-secureplt --enable-decimal-float=no";;
	powerpc64le*-*-*-*)	_arch_configure="--with-abi=elfv2 --enable-secureplt --enable-decimal-float=no";;
	i486-*-*-*)		_arch_configure="--with-arch=i486 --with-tune=generic --enable-cld";;
	i586-*-*-*)		_arch_configure="--with-arch=i586 --with-tune=pentium2 --enable-cld --enable-mmx";;
	pentium3-*-*-*)		_arch_configure="--with-arch=pentium3 --with-tune=pentium-m";;
	s390x-*-*-*)		_arch_configure="--with-arch=z196 --with-tune=zEC12 --with-zarch --with-long-double-128 --enable-decimal-float";;
	esac

	case "$CTARGET_LIBC" in
	musl)
		# musl does not support mudflap
		# libmpx uses secure_getenv and struct _libc_fpstate not present in musl
		_libc_configure="--disable-libmpx --disable-libmudflap --disable-libsanitizer"
		_symvers="--disable-symvers"
		export libat_cv_have_ifunc=no
		export ac_cv_type_off64_t=no
		;;
	esac

	[ "$CBUILD" != "$CHOST"   ] && _cross_configure="--disable-bootstrap"
	[ "$CHOST"  != "$CTARGET" ] && _cross_configure="--disable-bootstrap --with-sysroot=$CBUILDROOT"

	case "$BOOTSTRAP" in
	nolibc)	_bootstrap_configure="--with-newlib --disable-shared --enable-threads=no" ;;
	*)	_bootstrap_configure="--enable-shared --enable-threads --enable-tls" ;;
	esac

	$LIBGOMP	|| _bootstrap_configure="$_bootstrap_configure --disable-libgomp"
	$LIBATOMIC	|| _bootstrap_configure="$_bootstrap_configure --disable-libatomic"
	$LIBITM		|| _bootstrap_configure="$_bootstrap_configure --disable-libitm"
	$LIBQUADMATH	|| _arch_configure="$_arch_configure --disable-libquadmath"

	msg "Building the following:"
	echo ""
	echo "  CBUILD=$CBUILD"
	echo "  CHOST=$CHOST"
	echo "  CTARGET=$CTARGET"
	echo "  CTARGET_ARCH=$CTARGET_ARCH"
	echo "  CTARGET_LIBC=$CTARGET_LIBC"
	echo "  languages=$_languages"
	echo "  arch_configure=$_arch_configure"
	echo "  libc_configure=$_libc_configure"
	echo "  cross_configure=$_cross_configure"
	echo "  bootstrap_configure=$_bootstrap_configure"
	echo "  hash_style=$_hash_style"
	echo ""

	mkdir -p "$_builddir"
	cd "$_builddir"
	"$_gccdir"/configure --prefix=/usr \
		--mandir=/usr/share/man \
		--infodir=/usr/share/info \
		--build=${CBUILD} \
		--host=${CHOST} \
		--target=${CTARGET} \
		--with-pkgversion="Adelie ${pkgver}" \
		--with-bugurl="https://bts.adelielinux.org/" \
		--enable-checking=release \
		--disable-fixed-point \
		--disable-libstdcxx-pch \
		--disable-multiarch \
		--disable-multilib \
		--disable-werror \
		$_symvers \
		--enable-__cxa_atexit \
		--enable-default-pie \
		--enable-default-ssp \
		--enable-cloog-backend \
		--enable-languages=$_languages \
		$_arch_configure \
		$_libc_configure \
		$_cross_configure \
		$_bootstrap_configure \
		--with-system-zlib \
		--with-linker-hash-style=$_hash_style
	make
}

check() {
	cd "$_builddir"
	make check
}

package() {
	cd "$_builddir"
	make -j1 DESTDIR="${pkgdir}" install

	ln -s gcc "$pkgdir"/usr/bin/cc

	# strip debug info from some static libs
	${STRIP_FOR_TARGET} -g `find "$pkgdir" \( -name libgfortran.a -o -name libobjc.a -o -name libgomp.a \
		-o -name libmudflap.a -o -name libmudflapth.a \
		-o -name libgcc.a -o -name libgcov.a -o -name libquadmath.a \
		-o -name libitm.a -o -name libgo.a -o -name libcaf\*.a \
		-o -name libatomic.a -o -name libasan.a -o -name libtsan.a \) \
		-a -type f`

	if $LIBGOMP; then
		mv "$pkgdir"/usr/lib/libgomp.spec "$pkgdir"/$_gcclibdir
	fi
	if $LIBITM; then
		mv "$pkgdir"/usr/lib/libitm.spec "$pkgdir"/$_gcclibdir
	fi

	# remove ffi
	rm -f "$pkgdir"/usr/lib/libffi* "$pkgdir"/usr/share/man/man3/ffi*
	find "$pkgdir" -name 'ffi*.h' | xargs rm -f

	local gdblib="${_target:+$CTARGET/}lib"
	for i in $(find "$pkgdir"/usr/$gdblib/ -type f -maxdepth 1 -name "*-gdb.py" ); do
		mkdir -p "$pkgdir"/usr/share/gdb/python/auto-load/usr/$gdblib
		mv "$i" "$pkgdir"/usr/share/gdb/python/auto-load/usr/$gdblib/
	done

	# move ada runtime libs
	if $LANG_ADA; then
		for i in $(find "$pkgdir"/$_gcclibdir/adalib/ -type f -maxdepth 1 -name "libgna*.so"); do
			mv "$i" "$pkgdir"/usr/lib/
			ln -s ../../../../${i##*/} $i
		done
	fi

	if [ "$CHOST" != "$CTARGET" ]; then
		# cross-gcc: remove any files that would conflict with the
		# native gcc package
		rm -rf "$pkgdir"/usr/bin/cc "$pkgdir"/usr/include "$pkgdir"/usr/share
		# libcc1 does not depend on target, don't ship it
		rm -rf "$pkgdir"/usr/lib/libcc1.so*

		# fixup gcc library symlinks to be linker scripts so
		# linker finds the libs from relocated sysroot
		for so in "$pkgdir"/usr/$CTARGET/lib/*.so; do
			if [ -h "$so" ]; then
				local _real="$(basename $(readlink "$so"))"
				rm -f "$so"
				echo "GROUP ($_real)" > "$so"
			fi
		done
	fi
}

libatomic() {
	pkgdesc="GCC Atomic library"
	depends=
	replaces="gcc"

	mkdir -p "$subpkgdir"/usr/lib
	mv "$pkgdir"/usr/${_target:+$CTARGET/}lib/libatomic.so.* "$subpkgdir"/usr/lib/
}

libcxx() {
	pkgdesc="GNU C++ standard runtime library"
	depends=

	mkdir -p "$subpkgdir"/usr/lib
	mv "$pkgdir"/usr/${_target:+$CTARGET/}lib/libstdc++.so.* "$subpkgdir"/usr/lib/
}

gpp() {
	pkgdesc="GNU C++ standard library and compiler"
	depends="libstdc++=$_gccrel gcc=$_gccrel libc-dev"
	mkdir -p "$subpkgdir/$_gcclibexec" \
		"$subpkgdir"/usr/bin \
		"$subpkgdir"/usr/${_target:+$CTARGET/}include \
		"$subpkgdir"/usr/${_target:+$CTARGET/}lib \

	mv "$pkgdir/$_gcclibexec/cc1plus" "$subpkgdir/$_gcclibexec/"

	mv "$pkgdir"/usr/${_target:+$CTARGET/}lib/*++* "$subpkgdir"/usr/${_target:+$CTARGET/}lib/
	mv "$pkgdir"/usr/${_target:+$CTARGET/}include/c++ "$subpkgdir"/usr/${_target:+$CTARGET/}include/
	mv "$pkgdir"/usr/bin/*++ "$subpkgdir"/usr/bin/
}

libobjc() {
	pkgdesc="GNU Objective-C runtime"
	replaces="objc"
	depends=
	mkdir -p "$subpkgdir"/usr/lib
	mv "$pkgdir"/usr/${_target:+$CTARGET/}lib/libobjc.so.* "$subpkgdir"/usr/lib/
}

objc() {
	pkgdesc="GNU Objective-C"
	replaces="gcc"
	depends="libc-dev gcc=$_gccrel libobjc=$_gccrel"

	mkdir -p "$subpkgdir"/$_gcclibdir/include \
		"$subpkgdir"/usr/lib
	mv "$pkgdir"/$_gcclibdir/include/objc "$subpkgdir"/$_gcclibdir/include/
	mv "$pkgdir"/usr/lib/libobjc.so "$pkgdir"/usr/lib/libobjc.a \
		"$subpkgdir"/usr/lib/
}

libgcc() {
	pkgdesc="GNU C compiler runtime libraries"
	depends=

	mkdir -p "$subpkgdir"/usr/lib
	mv "$pkgdir"/usr/${_target:+$CTARGET/}lib/libgcc_s.so.* "$subpkgdir"/usr/lib/
}

libgomp() {
	pkgdesc="GCC shared-memory parallel programming API library"
	depends=
	replaces="gcc"

	mkdir -p "$subpkgdir"/usr/lib
	mv "$pkgdir"/usr/${_target:+$CTARGET/}lib/libgomp.so.* "$subpkgdir"/usr/lib/
}

libgo() {
	pkgdesc="Go runtime library for GCC"
	depends=

	mkdir -p "$subpkgdir"/usr/lib
	mv "$pkgdir"/usr/lib/libgo.so.* "$subpkgdir"/usr/lib/
}

go() {
	pkgdesc="Go support for GCC"
	depends="gcc=$_gccrel libgo=$_gccrel"

	mkdir -p "$subpkgdir"/$_gcclibexec \
		"$subpkgdir"/usr/lib \
		"$subpkgdir"/usr/bin
	mv "$pkgdir"/usr/lib/go "$subpkgdir"/usr/lib/
	mv "$pkgdir"/usr/bin/*gccgo "$subpkgdir"/usr/bin/
	mv "$pkgdir"/usr/bin/*go "$subpkgdir"/usr/bin
	mv "$pkgdir"/usr/bin/*gofmt "$subpkgdir"/usr/bin
	mv "$pkgdir"/$_gcclibexec/go1 "$subpkgdir"/$_gcclibexec/
	mv "$pkgdir"/$_gcclibexec/cgo "$subpkgdir"/$_gcclibexec/
	mv "$pkgdir"/$_gcclibexec/buildid "$subpkgdir"/$_gcclibexec/
	mv "$pkgdir"/$_gcclibexec/test2json "$subpkgdir"/$_gcclibexec/
	mv "$pkgdir"/$_gcclibexec/vet "$subpkgdir"/$_gcclibexec/
	mv "$pkgdir"/usr/lib/libgo.a \
		"$pkgdir"/usr/lib/libgo.so \
		"$pkgdir"/usr/lib/libgobegin.a \
		"$pkgdir"/usr/lib/libgolibbegin.a \
		"$subpkgdir"/usr/lib/
}

libgfortran() {
	pkgdesc="Fortran runtime library for GCC"
	depends=

	mkdir -p "$subpkgdir"/usr/lib
	mv "$pkgdir"/usr/lib/libgfortran.so.* "$subpkgdir"/usr/lib/
}

libquadmath() {
	replaces="gcc"
	pkgdesc="128-bit math library for GCC"
	depends=

	mkdir -p "$subpkgdir"/usr/lib
	mv "$pkgdir"/usr/lib/libquadmath.so.* "$subpkgdir"/usr/lib/
}

gfortran() {
	pkgdesc="GNU Fortran Compiler"
	depends="gcc=$_gccrel libgfortran=$_gccrel"
	$LIBQUADMATH && depends="$depends libquadmath=$_gccrel"
	replaces="gcc"

	mkdir -p "$subpkgdir"/$_gcclibexec \
		"$subpkgdir"/$_gcclibdir \
		"$subpkgdir"/usr/lib \
		"$subpkgdir"/usr/bin
	mv "$pkgdir"/usr/bin/*gfortran "$subpkgdir"/usr/bin/
	mv "$pkgdir"/usr/lib/libgfortran.a \
		"$pkgdir"/usr/lib/libgfortran.so \
		"$subpkgdir"/usr/lib/
	if $LIBQUADMATH; then
		mv "$pkgdir"/usr/lib/libquadmath.a \
			"$pkgdir"/usr/lib/libquadmath.so \
			"$subpkgdir"/usr/lib/
	fi
	mv "$pkgdir"/$_gcclibexec/f951 "$subpkgdir"/$_gcclibexec
	mv "$pkgdir"/usr/lib/libgfortran.spec "$subpkgdir"/$_gcclibdir
}

libgnat() {
	pkgdesc="GNU Ada runtime shared libraries"
	depends=

	mkdir -p "$subpkgdir"/usr/lib
	mv "$pkgdir"/usr/lib/libgna*.so "$subpkgdir"/usr/lib/
}

gnat() {
	pkgdesc="Ada support for GCC"
	depends="gcc=$_gccrel"
	[ "$CHOST" = "$CTARGET" ] && depends="$depends libgnat=$_gccrel"

	mkdir -p "$subpkgdir"/$_gcclibexec \
		"$subpkgdir"/$_gcclibdir \
		"$subpkgdir"/usr/bin
	mv "$pkgdir"/$_gcclibexec/*gnat* "$subpkgdir"/$_gcclibexec/
	mv "$pkgdir"/$_gcclibdir/*ada* "$subpkgdir"/$_gcclibdir/
	mv "$pkgdir"/usr/bin/*gnat* "$subpkgdir"/usr/bin/
}

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