_target=mips64
_prefix="/opt/n64-toolchain-slim"
_mpfr=mpfr-3.1.4
_gmp=gmp-6.1.0
_mpc=mpc-1.0.3
_isl=isl-0.16.1
pkgname=n64-toolkit-bootstrap
pkgver=6.2.0
pkgrel=1
_gcc="gcc-$pkgver"
pkgdesc="The GNU Compiler Collection. Stage 1 for toolchain building (${_target})"
arch=('any')
license=('GPL' 'LGPL' 'FDL')
url='http://www.gnu.org/software/gcc/'
depends=('zlib' 'n64-toolkit-binutils') # 'libmpc'
makedepends=('gmp' 'mpfr')
provides=('n64-toolkit-gcc')
source=("ftp://gcc.gnu.org/pub/gcc/releases/$_gcc/$_gcc.tar.bz2"
        "ftp://gcc.gnu.org/pub/gcc/infrastructure/$_mpfr.tar.bz2"
        "ftp://gcc.gnu.org/pub/gcc/infrastructure/$_gmp.tar.bz2"
        "ftp://gcc.gnu.org/pub/gcc/infrastructure/$_mpc.tar.gz"
        "ftp://gcc.gnu.org/pub/gcc/infrastructure/$_isl.tar.bz2")
md5sums=('9768625159663b300ae4de2f4745fcc4'
         'b8a2f6b0e68bef46e53da2ac439e1cf4'
         '86ee6e54ebfc4a90b643a65e402c4048'
         'd6a1d5f8ddea3abd2cc3e98f58352d26'
         'ac1f25a0677912952718a51f5bc20f32')
options=('!emptydirs' '!strip')

prepare() {
  cd "$srcdir/$_isl"
  # Fix trailing comma which errors with -pedantic for host GCC <= 4.3
  sed -i 's/isl_stat_ok = 0,/isl_stat_ok = 0/' "include/isl/ctx.h"

  cd "$srcdir/$_gcc"
  rm -rf mpfr gmp mpc isl
  ln -sf "$srcdir/$_mpfr" mpfr
  ln -sf "$srcdir/$_gmp" gmp
  ln -sf "$srcdir/$_mpc" mpc
  ln -sf "$srcdir/$_isl" isl
  # Hack - see native package for details
  sed -i "/ac_cpp=/s/\$CPPFLAGS/\$CPPFLAGS -O2/" {libiberty,gcc}/configure
}

build() {
  # the programs we're compiling are really picky about flags.
  # it's best to keep it simple.
  export CFLAGS="-O2"
  export CXXFLAGS="-O2"
  export CPPFLAGS=""
  export LDFLAGS=""

  export CFLAGS_FOR_TARGET="-O2 -ffunction-sections -fdata-sections \
-fno-exceptions -fno-unwind-tables -fno-asynchronous-unwind-tables"
  export CXXFLAGS_FOR_TARGET="$CFLAGS_FOR_TARGET -fno-rtti"

  cd "$srcdir"
  [ -d "build-bootstrap-gcc" ] || mkdir "build-bootstrap-gcc"
  cd "build-bootstrap-gcc"

  local _build=
  if [ -n "$MINGW_CHOST" ]; then
    _build="--build=$MINGW_CHOST --host=$MINGW_CHOST"
  fi

  "../$_gcc/configure" $_build --target=${_target} --prefix="$_prefix" \
    --disable-__cxa_atexit \
    --disable-decimal-float \
    --disable-gold \
    --disable-initfini-array \
    --disable-libada \
    --disable-libatomic \
    --disable-libgcj \
    --disable-libgomp \
    --disable-libitm \
    --disable-libquadmath \
    --disable-libquadmath-support \
    --disable-libsanitizer \
    --disable-libssp \
    --disable-libunwind-exceptions \
    --disable-libvtv \
    --disable-multiarch \
    --disable-multilib \
    --disable-nls \
    --disable-plugin \
    --disable-shared \
    --disable-threads \
    --disable-tls \
    --disable-werror \
    --enable-languages=c,c++,lto \
    --enable-static \
    --enable-target-optspace \
    --with-abi=32 \
    --with-arch=vr4300 \
    --with-newlib \
    --with-tune=vr4300 \
    --without-included-gettext \
    --without-headers \

  make all-gcc
}

package() {
  local PREFIX="$pkgdir$_prefix"

  cd "$srcdir/build-bootstrap-gcc"
  make DESTDIR="$pkgdir" install-gcc -j1

  # strip target binaries
  find "$PREFIX/lib" \( -name "*.a" -or -name "*.o" \) -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 "$PREFIX/bin" "$PREFIX/lib/gcc/$_target/${_gcc/gcc-/}" \
    -type f -and \( -executable \) -exec strip '{}' \;

  rm -r "$PREFIX/share/info"
}