# Maintainer (Arch): PitBall
# Maintainer: André Silva <emulatorman@parabola.nu>

pkgname=lib32-clang
pkgver=3.5.0
_base_ver=3.5.0
pkgrel=1
arch=('x86_64')
url="http://llvm.org/"
license=('custom:University of Illinois/NCSA Open Source License')
makedepends=('lib32-libffi' 'lib32-zlib' 'python2' 'gcc-multilib' 'clang' 'lib32-llvm' 'bc')
options=('staticlibs')
source=(http://llvm.org/releases/$pkgver/llvm-$pkgver.src.tar.xz{,.sig}
        http://llvm.org/releases/$pkgver/cfe-$pkgver.src.tar.xz{,.sig}
        http://llvm.org/releases/$pkgver/compiler-rt-$pkgver.src.tar.xz{,.sig}
        llvm-3.5.0-force-link-pass.o.patch)
sha256sums=('28e199f368ef0a4666708f31c7991ad3bcc3a578342b0306526dd35f07595c03'
            'SKIP'
            'fc80992e004b06f6c7afb612de1cdaa9ac9d25811c55f94fcf7331d9b81cdb8b'
            'SKIP'
            'a4b3e655832bf8d9a357ea2c771db347237460e131988cbb96cda40ff39a8136'
            'SKIP'
            '5702053503d49448598eda1b8dc8c263f0df9ad7486833273e3987b5dec25a19')

prepare() {
  # Change directory names to release names so we don't need to change the
  # whole PKGBUILD
  mv llvm-$pkgver{.src,}
  mv cfe-$pkgver.src clang-$pkgver

  cd "$srcdir/llvm-$pkgver"

  rm -rf projects/compiler-rt
  mv "$srcdir/clang-$pkgver" tools/clang


  rm -rf projects/compiler-rt
  mv "$srcdir/compiler-rt-$_base_ver.src" projects/compiler-rt

  # Fix installation directories, ./configure doesn't seem to set them right
  sed -i -e 's:\$(PROJ_prefix)/lib:$(PROJ_prefix)/lib32:' \
         -e 's:\$(PROJ_prefix)/docs/llvm:$(PROJ_prefix)/share/doc/llvm:' \
    Makefile.config.in
  sed -i '/ActiveLibDir = ActivePrefix/s:lib:lib32:' \
    tools/llvm-config/llvm-config.cpp
  sed -i 's:LLVM_LIBDIR="${prefix}/lib":LLVM_LIBDIR="${prefix}/lib32":' \
    autoconf/configure.ac \
    configure

  # Use system lib32-llvm
  install -d $srcdir/llvm-$pkgver/Release/lib
  for file in ` pacman -Ql lib32-llvm |grep /lib32/ |awk '{print $2}' |sed '/\/$/d'`; do
  ln -sf $file $srcdir/llvm-$pkgver/Release/lib/
  done

  # Fix build with GCC 4.9 (patch from Debian)
  # http://llvm.org/bugs/show_bug.cgi?id=20067
  patch -Np1 -i "$srcdir/llvm-3.5.0-force-link-pass.o.patch"
}

build() {
  cd "$srcdir/llvm-$pkgver"
  export CC="gcc -m32"
  export CXX="g++ -m32"
  export CLANG="clang -m32"
  export PKG_CONFIG_PATH="/usr/lib32/pkgconfig"
  export LLVM_CONFIG=/usr/bin/llvm-config32

  # Include location of libffi headers in CPPFLAGS
  CPPFLAGS+=" $(pkg-config --cflags libffi)"

  ./configure \
    --prefix=/usr \
    --libdir=/usr/lib32 \
    --sysconfdir=/etc \
    --enable-shared \
    --enable-libffi \
    --enable-targets=x86 \
    --enable-experimental-targets=R600 \
    --enable-bindings=none \
    --disable-expensive-checks \
    --disable-debug-runtime \
    --disable-assertions \
    --with-binutils-include=/usr/include \
    --with-python=/usr/bin/python2 \
    --host=i686-pc-linux-gnu \
    --target=i686-pc-linux-gnu \
    --enable-optimized

#    --disable-clang-static-analyzer \

#  make
  make -C projects/compiler-rt clang_linux
  make -C tools/clang/utils/TableGen
  make -C tools/clang/lib
}

package_lib32-clang() {
  pkgdesc="C language family frontend for LLVM (32-bit)"
  url="http://clang.llvm.org/"
  depends=('clang' 'lib32-llvm' 'gcc-multilib')

  install -d $pkgdir/usr/lib32/clang/$pkgver
  ln -s lib32 $pkgdir/usr/lib

  cd "$srcdir/llvm-$pkgver/tools/clang"
  make -C lib DESTDIR="$pkgdir" install
  # Fix permissions of static libs
  chmod -x "$pkgdir"/usr/lib32/*.a
  mv $pkgdir/usr/lib32/clang{,/$pkgver}/include
  rm -rf $pkgdir/usr/lib
}