# Maintainer (Arch): Anatol Pomozov <anatol.pomozov@gmail.com>

_target=@CHOST@
pkgname=$_target-gcc
pkgver=7.3.1+20180312
_islver=0.18
pkgrel=1
pkgdesc='The GNU Compiler Collection - cross compiler for @CARCH@ target'
arch=(x86_64)
url='http://gcc.gnu.org/'
license=(GPL LGPL FDL)
depends=($_target-binutils $_target-glibc libmpc zlib)
makedepends=(gmp mpfr)
options=(!emptydirs !strip staticlibs)
conflicts=($pkgname-bootstrap)
replaces=($pkgname-bootstrap)
source=(https://sources.archlinux.org/other/gcc/gcc-${pkgver/+/-}.tar.xz{,.sig}
        http://isl.gforge.inria.fr/isl-$_islver.tar.bz2
        gcc-pure64.patch::https://gist.githubusercontent.com/alexforsale/a1339a64882ac7df065404f0af9bb639/raw/9586520039c5b83b96aadfff9aa206bd1bb6972d/gcc-pure64.patch
        0001-pthread-reentrant.patch)
validpgpkeys=(F3691687D867B81B51CE07D9BBE43771487328A9  # bpiotrowski@archlinux.org
              13975A70E63C361C73AE69EF6EEB81F8981C74C7  # richard.guenther@gmail.com
              33C235A34C46AA3FFB293709A328C3A2C3C45C06) # Jakub Jelinek <jakub@redhat.com>
sha256sums=('c52618f656f2102b3544419e7d0a8a4f4e6ff052783865202be73edf1a40e28b'
            'SKIP'
            '6b8b0fd7f81d0a957beb3679c81bbb34ccc7568d5682844d8924424a0dadcb1b'
            'c7545a5faca9fc1aee47bd1a4e407e7a64ef1d4c4fb018ede0a5f5ffa16c33be'
            'fc9c6f0edd615f2b39deff28b9626a08fd98ef8ce19f7e34281c0a5bd653ac3b')

prepare() {
  [[ ! -d gcc ]] && ln -s gcc-${pkgver/+/-} gcc
  cd gcc

  # link isl for in-tree builds
  ln -sf ../isl-$_islver isl

  # Do not run fixincludes
  sed -i 's@\./fixinc\.sh@-c true@' gcc/Makefile.in

  # Arch Linux installs 64bit libraries in /lib
  patch -Np1 -i "$srcdir"/gcc-pure64.patch

  # hack! - some configure tests for header files using "$CPP $CPPFLAGS"
  sed -i "/ac_cpp=/s/\$CPPFLAGS/\$CPPFLAGS -O2/" "$srcdir"/gcc/{libiberty,gcc}/configure

  # fix -pthreads behavior on risc-v
  patch -Np1 -i "$srcdir/0001-pthread-reentrant.patch"

  mkdir -p "$srcdir/gcc-build"
}

build() {
  cd gcc-build

  # using -pipe causes spurious test-suite failures
  # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48565
  CFLAGS=${CFLAGS/-pipe/}
  CXXFLAGS=${CXXFLAGS/-pipe/}

  $srcdir/gcc/configure \
      --target=$_target \
      --prefix=/usr \
      --libdir=/usr/lib \
      --libexecdir=/usr/lib \
      --program-prefix=$_target- \
      --with-local-prefix=/usr/$_target \
      --with-build-sysroot=/usr/$_target \
      --with-sysroot=/usr/$_target \
		  --enable-shared \
      --with-system-zlib \
		  --enable-tls \
		  --enable-languages=c,c++,fortran \
		  --disable-libmudflap \
		  --disable-libssp \
		  --disable-libquadmath \
		  --disable-nls \
      --@MULTILIB@-multilib \
		  --disable-bootstrap \
      --enable-checking=release \
      @GCC_CONFIG_FLAGS@

  make
}

package() {
  cd gcc-build

  make DESTDIR="$pkgdir" install

  # strip target binaries
  find "$pkgdir"/usr/lib/gcc/$_target/ "$pkgdir"/usr/$_target/lib -type f -and \( -name \*.a -or -name \*.o \) -exec $_target-objcopy -R .comment -R .note -R .debug_info -R .debug_aranges -R .debug_pubnames -R .debug_pubtypes -R .debug_abbrev -R .debug_line -R .debug_str -R .debug_ranges -R .debug_loc '{}' \;

  # strip host binaries
  find "$pkgdir"/usr/bin/ "$pkgdir"/usr/lib/gcc/$_target/ -type f -and \( -executable \) -exec strip '{}' \;

  # Remove files that conflict with host gcc package
  rm -r "$pkgdir"/usr/lib/libcc1.so{,.0,.0.0.0}
  rm -r "$pkgdir"/usr/share/man/man7
  rm -r "$pkgdir"/usr/share/info
  rm -r "$pkgdir"/usr/share/gcc-*
}