Crux port for gcc7

Pkgfile

# Description: The GNU Compiler Collection
# URL:	     http://gcc.gnu.org
# Maintainer:  CRUX System Team, core-ports at crux dot nu
# Depends on:  zlib libmpc

name=gcc7
version=7.3.0-RC-20180117
release=1-local
source=(https://gcc.gnu.org/pub/gcc/snapshots/$version/gcc-$version.tar.xz \
	gcc-nocheck-fixincludes.patch gcc-4.7.3-multilib-dirs.patch)

build() {
	patch -d gcc-$version -p1 -i $SRC/gcc-nocheck-fixincludes.patch
	patch -d gcc-$version -p1 -i $SRC/gcc-4.7.3-multilib-dirs.patch

	sed -i -e "s/7.2.1/$version/" gcc-$version/gcc/BASE-VER

	mkdir build
	cd build
	../gcc-$version/configure \
		--prefix=/opt/$name \
		--libexecdir=/opt/$name/lib \
		--enable-languages=c,c++,objc \
		--enable-threads=posix \
		--enable-__cxa_atexit \
		--enable-clocale=gnu \
		--enable-shared \
		--disable-nls \
		--with-x=no \
		--with-system-zlib \
		--disable-multilib \
		--enable-default-pie \
		--enable-default-ssp \
		--with-pkgversion="CRUX-x86_64"

	make bootstrap
	make -j1 DESTDIR=$PKG install

	ln -sf gcc $PKG/opt/$name/bin/cc
	ln -sf g++ $PKG/opt/$name/bin/c++

	mv $PKG/opt/gcc7/lib/gcc/*/$version/include-fixed/{limits.h,syslimits.h} \
		$PKG/opt/gcc7/lib/gcc/*/$version/include/
	rm -r $PKG/opt/gcc7/share/{info,gcc-$version} 
	rm -r $PKG/opt/gcc7/bin/*-linux-gnu-*
	rm -r $PKG/opt/gcc7/lib/gcc/*/$version/{install-tools,include-fixed}

	install -d -m 0755 $PKG/opt/$name/share/gdb/auto-load/usr/lib
	mv $PKG/opt/$name/lib/libstdc++.so.*-gdb.py $PKG/opt/$name/share/gdb/auto-load/usr/lib

	sed -i "s|-L$SRC[^ ]* ||g" $PKG/opt/gcc7/lib/{libstdc++.la,libsupc++.la}
}