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# $Id: PKGBUILD 183300 2013-04-20 23:37:12Z foutrelis $
# Maintainer: Evangelos Foutras <evangelos@foutrelis.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=('llvm' 'llvm-ocaml' 'clang' 'clang-analyzer')
pkgver=3.2
pkgrel=6
arch=('i686' 'x86_64')
url="http://llvm.org/"
license=('custom:University of Illinois/NCSA Open Source License')
makedepends=('libffi' 'python2' 'ocaml' 'python-sphinx')
source=(http://llvm.org/releases/$pkgver/$pkgname-$pkgver.src.tar.gz
        http://llvm.org/releases/$pkgver/clang-$pkgver.src.tar.gz
        http://dev.archlinux.org/~foutrelis/sources/compiler-rt/compiler-rt-$pkgver.src.tar.xz
        llvm-Config-config.h
        llvm-Config-llvm-config.h
        cindexer-clang-path.patch
        enable-lto.patch
        llvm-3.1-fix-debug-line-info.patch
        clang-3.2-fix-std-thread-with-libstdc++.patch
        clang-3.1-fix-libprofile_rt.a-location.patch)
sha256sums=('125090c4d26740f1d5e9838477c931ed7d9ad70d599ba265f46f3a42cb066343'
            '2aaaf03f7c0f6b16fe97ecc81247dc2bf2d4bec7620a77cc74670b7e07ff5658'
            'a9a6b73a1bd5fc763f3b3826a6ce796cb150042d37d319e06e72d3d9778aaac1'
            '312574e655f9a87784ca416949c505c452b819fad3061f2cde8aced6540a19a3'
            '597dc5968c695bbdbb0eac9e8eb5117fcd2773bc91edf5ec103ecffffab8bc48'
            '3074df5322900e087377a8e03a02115463ccc0011c25917c2f06df11facd9b92'
            'fe3969d9ec93263814d9892a15b6a1eb60ad756fe7c3985a45d8cd82bc9b7a7b'
            'db1f1aadebbc4c4232bdad49fb9b7dc61eac727085c63154b870fa9ce64fd18d'
            '02b2c0fd29bc165140eb4524700254bfdd88369706719acb3f3be3134f1e67e8'
            '0d32ad283566357ca1bfbeb4cbe6b0b961943b79d3d718ed0435101c05629137')

prepare() {
  cd "$srcdir/$pkgname-$pkgver.src"

  # At the present, clang must reside inside the LLVM source code tree to build
  # See http://llvm.org/bugs/show_bug.cgi?id=4840
  mv "$srcdir/clang-$pkgver.src" tools/clang

  mv "$srcdir/compiler-rt-$pkgver.src" projects/compiler-rt

  # 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:$(PROJ_prefix)/lib/llvm:' \
         -e 's:\$(PROJ_prefix)/docs/llvm:$(PROJ_prefix)/share/doc/llvm:' \
    Makefile.config.in
  sed -i '/ActiveLibDir = ActivePrefix/s:lib:lib/llvm:' \
    tools/llvm-config/llvm-config.cpp
  sed -i 's:LLVM_LIBDIR="${prefix}/lib":LLVM_LIBDIR="${prefix}/lib/llvm":' \
    autoconf/configure.ac \
    configure

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

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

  # Fix FS#34861: crash on apps built using C++11's std::thread
  # http://llvm.org/bugs/show_bug.cgi?id=12730
  patch -d tools/clang -Np2 -i \
    "$srcdir/clang-3.2-fix-std-thread-with-libstdc++.patch"

  # Fix FS#29984: [clang] -coverage is broken
  patch -d tools/clang -Np1 -i \
    "$srcdir/clang-3.1-fix-libprofile_rt.a-location.patch"

  # Fix FS#31098: LLVM 3.1 produces invalid debug information
  # http://llvm.org/bugs/show_bug.cgi?id=13211
  patch -Np1 -i "$srcdir/llvm-3.1-fix-debug-line-info.patch"

  # Drop "svn" suffix from version string
  sed -i 's/3\.2svn/3.2/g' configure

  # Prepare Python 2 override
  mkdir "$srcdir/python2-path"
  ln -s /usr/bin/python2 "$srcdir/python2-path/python"
}

build() {
  cd "$srcdir/$pkgname-$pkgver.src"

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

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

  # Use Python 2
  export PATH="$srcdir/python2-path:$PATH"

  # Force the use of GCC instead of clang
  CC=gcc CXX=g++ \
  ./configure \
    --prefix=/usr \
    --libdir=/usr/lib/llvm \
    --sysconfdir=/etc \
    --enable-shared \
    --enable-libffi \
    --enable-targets=all \
    --disable-expensive-checks \
    --disable-debug-runtime \
    --disable-assertions \
    --with-binutils-include=/usr/include \
    --$_optimized_switch-optimized

  make REQUIRES_RTTI=1
  make -C docs -f Makefile.sphinx man
  make -C docs -f Makefile.sphinx html
}

package_llvm() {
  pkgdesc="Low Level Virtual Machine"
  depends=('perl' 'libffi')

  cd "$srcdir/$pkgname-$pkgver.src"

  # 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/lib/llvm/*.a

  # Get rid of example Hello transformation
  rm "$pkgdir"/usr/lib/llvm/*LLVMHello.*

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

  # Symlink LLVMgold.so into /usr/lib/bfd-plugins
  # (https://bugs.archlinux.org/task/28479)
  install -d "$pkgdir/usr/lib/bfd-plugins"
  ln -s ../llvm/LLVMgold.so "$pkgdir/usr/lib/bfd-plugins/LLVMgold.so"

  if [[ $CARCH == x86_64 ]]; then
    # Needed for multilib (https://bugs.archlinux.org/task/29951)
    # Header stubs are taken from Fedora
    for _header in config llvm-config; do
      mv "$pkgdir/usr/include/llvm/Config/$_header"{,-64}.h
      cp "$srcdir/llvm-Config-$_header.h" \
        "$pkgdir/usr/include/llvm/Config/$_header.h"
    done
  fi

  # Install man pages
  install -d "$pkgdir/usr/share/man/man1"
  cp docs/_build/man/*.1 "$pkgdir/usr/share/man/man1/"

  # Install html docs
  cp -r docs/_build/html/* "$pkgdir/usr/share/doc/llvm/html/"
  rm -r "$pkgdir/usr/share/doc/llvm/html/_sources"

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

package_llvm-ocaml() {
  pkgdesc="OCaml bindings for LLVM"
  depends=("llvm=$pkgver-$pkgrel" 'ocaml')

  cd "$srcdir/llvm-$pkgver.src"

  install -d "$pkgdir"/{usr/lib,usr/share/doc/llvm}
  cp -r "$srcdir/ocaml" "$pkgdir/usr/lib"
  cp -r "$srcdir/ocamldoc" "$pkgdir/usr/share/doc/llvm"

  # Remove execute bit from static libraries
  chmod -x "$pkgdir"/usr/lib/ocaml/libllvm*.a

  install -Dm644 LICENSE.TXT "$pkgdir/usr/share/licenses/llvm-ocaml/LICENSE"
}

package_clang() {
  pkgdesc="C language family frontend for LLVM"
  url="http://clang.llvm.org/"
  depends=("llvm=$pkgver-$pkgrel" 'gcc')

  # Fix installation path for clang docs
  sed -i 's:$(PROJ_prefix)/share/doc/llvm:$(PROJ_prefix)/share/doc/clang:' \
    "$srcdir/llvm-$pkgver.src/Makefile.config"

  cd "$srcdir/llvm-$pkgver.src/tools/clang"
  make DESTDIR="$pkgdir" install

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

  # Revert the path change in case we want to do a repackage later
  sed -i 's:$(PROJ_prefix)/share/doc/clang:$(PROJ_prefix)/share/doc/llvm:' \
    "$srcdir/llvm-$pkgver.src/Makefile.config"

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

package_clang-analyzer() {
  pkgdesc="A source code analysis framework"
  url="http://clang-analyzer.llvm.org/"
  depends=("clang=$pkgver-$pkgrel" 'python2')

  cd "$srcdir/llvm-$pkgver.src/tools/clang"

  install -d "$pkgdir"/usr/{bin,lib/clang-analyzer}
  for _tool in scan-{build,view}; do
    cp -r tools/$_tool "$pkgdir/usr/lib/clang-analyzer/"
    ln -s /usr/lib/clang-analyzer/$_tool/$_tool "$pkgdir/usr/bin/"
  done

  # scan-build looks for clang within the same directory
  ln -s /usr/bin/clang "$pkgdir/usr/lib/clang-analyzer/scan-build/"

  # Relocate man page
  install -d "$pkgdir/usr/share/man/man1"
  mv "$pkgdir/usr/lib/clang-analyzer/scan-build/scan-build.1" \
    "$pkgdir/usr/share/man/man1/"

  # Use Python 2
  sed -i \
    -e 's|env python$|&2|' \
    -e 's|/usr/bin/python$|&2|' \
    "$pkgdir/usr/lib/clang-analyzer/scan-view/scan-view" \
    "$pkgdir/usr/lib/clang-analyzer/scan-build/set-xcode-analyzer"

  # Compile Python scripts
  python2 -m compileall "$pkgdir/usr/lib/clang-analyzer"
  python2 -O -m compileall "$pkgdir/usr/lib/clang-analyzer"

  install -Dm644 LICENSE.TXT "$pkgdir/usr/share/licenses/clang-analyzer/LICENSE"
}

# vim:set ts=2 sw=2 et: