# $Id: PKGBUILD 51447 2011-07-09 06:18:32Z lcarlier $
# Maintainer: Evangelos Foutras <foutrelis@gmail.com>
# Contributor: Jan "heftig" Steffens <jan.steffens@gmail.com>
# Contributor: Sebastian Nowicki <sebnow@gmail.com>
# Contributor: Devin Cofer <ranguvar{AT]archlinux[DOT}us>
# Contributor: Tobias Kieslich <tobias@justdreams.de>
# Contributor: Geoffroy Carrier <geoffroy.carrier@aur.archlinux.org>
# Contributor: Tomas Lindquist Olsen <tomas@famolsen.dk>
# Contributor: Roberto Alsina <ralsina@kde.org>
# Contributor: Gerardo Exequiel Pozzi <vmlinuz386@yahoo.com.ar>

pkgname=('lib32-llvm')
pkgver=2.9
#_gcc_ver=4.6.1
pkgrel=2
arch=('x86_64')
url="http://llvm.org/"
license=('custom:University of Illinois/NCSA Open Source License')
makedepends=('lib32-libffi' 'python2' 'gcc-multilib')
source=(http://llvm.org/releases/$pkgver/llvm-$pkgver.tgz
        http://llvm.org/releases/$pkgver/clang-$pkgver.tgz
        ftp://ftp.archlinux.org/other/community/clang/gcc-headers-4.5.2.tar.xz
        clang-plugin-loader-registry.patch
        cindexer-clang-path.patch
        clang-toolchains-gcc-versions.patch
        clang-pure64.patch
        enable-lto.patch)
md5sums=('793138412d2af2c7c7f54615f8943771'
         '634de18d04b7a4ded19ec4c17d23cfca'
         '70e23a3dc2b38ecb2bb4d2c48f47295d'
         '02c23b4aaca3445b8bf39fddb2f9906e'
         '87a7162dbe99e9ffce6c40bd09f5f4f0'
         '8da236120a9a287a977b575b8b905c93'
         '225ee6b531f8327f34f344a18cb4ec81'
         '8f7582d7440e4a8342c3aea9ec714fb4')

build() {
  cd "$srcdir/llvm-$pkgver"

  export CC="gcc -m32"
  export CXX="g++ -m32"
  export PKG_CONFIG_PATH="/usr/lib32/pkgconfig"

  # Fix symbolic links from OCaml bindings to LLVM libraries
  sed -i 's:\$(PROJ_libdir):/usr/lib/llvm:' bindings/ocaml/Makefile.ocaml

  # Fix installation directories, ./configure doesn't seem to set them right
  sed -i -e 's:\$(PROJ_prefix)/etc/llvm:/etc/llvm:' \
         -e 's:\$(PROJ_prefix)/lib:$(PROJ_prefix)/lib32/llvm:' \
         -e 's:\$(PROJ_prefix)/docs/llvm:$(PROJ_prefix)/share/doc/llvm:' \
    Makefile.config.in

  # Fix insecure rpath (http://bugs.archlinux.org/task/14017)
  sed -i 's:$(RPATH) -Wl,$(\(ToolDir\|LibDir\|ExmplDir\))::g' Makefile.rules

  # Get the correct list of symbols to export
  # See http://lists.cs.uiuc.edu/pipermail/cfe-dev/2010-April/008559.html
  patch -Np1 -i "$srcdir/clang-plugin-loader-registry.patch"

  # Fix clang path in CIndexer.cpp (https://bugs.archlinux.org/task/22799)
  #patch -d tools/clang -Np0 -i "$srcdir/cindexer-clang-path.patch"

  # Add GCC 4.6.0 to GccVersions (FS#23631)
  #patch -d tools/clang -Np1 -i "$srcdir/clang-toolchains-gcc-versions.patch"

  # Adjust lib paths
  #patch -d tools/clang -Np0 -i "$srcdir/clang-pure64.patch"

  # Make -flto work
  # Use gold instead of default linker, and always use the plugin
  #patch -d tools/clang -Np0 -i "$srcdir/enable-lto.patch"

  # Apply strip option to configure
  _optimized_switch="enable"
  [[ $(check_option strip) == n ]] && _optimized_switch="disable"

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

  # TODO: Uncomment when clang works with GCC 4.6+
  #_cxx_headers="/usr/include/c++/$_gcc_ver"
  #if [[ ! -d $_cxx_headers ]]; then
  #  error "Couldn't find the C++ headers, PKGBUILD needs fixing!"
  #  return 1
  #fi
  _cxx_headers="/usr/include/c++/clang-$pkgver"

  _32bit_headers=""
  if [[ $CARCH == x86_64 ]]; then
    # Important for multilib
    _32bit_headers="32"
  fi

  ./configure \
    --prefix=/usr \
    --libdir=/usr/lib32/llvm \
    --sysconfdir=/etc \
    --enable-shared \
    --enable-libffi \
    --enable-targets=all \
    --disable-expensive-checks \
    --disable-debug-runtime \
    --disable-assertions \
    --with-binutils-include=/usr/include \
    --with-cxx-include-root=$_cxx_headers \
    --with-cxx-include-arch=$CHOST \
    --with-cxx-include-32bit-dir=$_32bit_headers \
    --$_optimized_switch-optimized

  make REQUIRES_RTTI=1
}

package() {
  pkgdesc="Low Level Virtual Machine (32 bits version)"
  depends=('perl' 'lib32-libffi' 'llvm')

  cd "$srcdir/llvm-$pkgver"

  # We move the clang directory out of the tree so it won't get installed and
  # then we bring it back in for the clang package
  # mv tools/clang "$srcdir"
  # -j1 is due to race conditions during the installation of the OCaml bindings
  make -j1 DESTDIR="$pkgdir" install
  # mv "$srcdir/clang" tools

  # OCaml bindings go to a separate package
  # rm -rf "$srcdir"/{ocaml,ocamldoc}
  # mv "$pkgdir"/usr/{lib/ocaml,share/doc/llvm/ocamldoc} "$srcdir"

  # Remove duplicate files installed by the OCaml bindings
  # rm "$pkgdir"/usr/{lib/llvm/libllvm*,share/doc/llvm/ocamldoc.tar.gz}

  # Fix permissions of static libs
  chmod -x "$pkgdir"/usr/lib32/llvm/*.a

  # Fix libdir in llvm-config (http://bugs.archlinux.org/task/14487)
  #sed -i 's:\(ABS_RUN_DIR/lib\):\1/llvm:' "$pkgdir/usr/bin/llvm-config"
  sed -i 's:ABS_RUN_DIR/lib:ABS_RUN_DIR/llvm:' "$pkgdir/usr/bin/llvm-config"
  mv "$pkgdir/usr/bin/llvm-config" "$pkgdir/usr/lib32/llvm/llvm-config"
  # Get rid of example Hello transformation
  rm "$pkgdir"/usr/lib32/llvm/*LLVMHello.*

  # Symlink the gold plugin where clang expects it
  ln -s llvm/LLVMgold.so "$pkgdir/usr/lib32/LLVMgold.so"

  # Add ld.so.conf.d entry
  install -d "$pkgdir/etc/ld.so.conf.d"
  echo /usr/lib32/llvm >"$pkgdir/etc/ld.so.conf.d/llvm32.conf"

  install -Dm644 LICENSE.TXT "$pkgdir/usr/share/licenses/$pkgname/LICENSE"

  rm -r "$pkgdir"/usr/{bin,include,share/{doc,man}}
}