#
# Chakra Packages for Chakra, part of chakra-project.org
#
# maintainer (i686): Phil Miller <philm[at]chakra-project[dog]org>
# maintainer (x86_64): Manuel Tortosa <manutortosa[at]chakra-project[dot]org>

pkgname=('llvm' 'llvm-ocaml' 'clang' 'clang-analyzer')
pkgver=3.0
_gcc_ver=4.6.2
pkgrel=1
arch=('i686' 'x86_64')
url="http://llvm.org/"
license=('custom:University of Illinois/NCSA Open Source License')
makedepends=('gcc-libs' 'libffi' 'python2' 'ocaml' "gcc=${_gcc_ver}" 'groff')
source=("http://llvm.org/releases/${pkgver}/${pkgname}-${pkgver}.tar.gz"
        "http://llvm.org/releases/${pkgver}/clang-${pkgver}.tar.gz"
        'clang-fix-gcc-paths.patch'
        'archlinux-clang-pure64.patch'
        'archlinux-enable-lto.patch'
        'archlinux-fix-gold-lto-linking.patch'
        'fedora-llvm-2.6-timestamp.patch')
md5sums=('a8e5f5f1c1adebae7b4a654c376a6005'
         '43350706ae6cf05d0068885792ea0591'
         '0dfddfb58f23470a14d8ef5e0c668137'
         'ddf6c1d4aaf5c58a933247f423cf6c59'
         '76f40a48805347fd5e0ba6f93517fec1'
         '33eb8f686eb9b7bb02051e7fd7b53467'
         '43c540ec04f23f07620357211d28c25c')

build() {
  # Apply external patches
  cd "${srcdir}/clang-${pkgver}.src"
  patch -Np0 -i "${srcdir}/archlinux-clang-pure64.patch"
  patch -Np0 -i "${srcdir}/archlinux-enable-lto.patch"
  patch -Np1 -i "${srcdir}/clang-fix-gcc-paths.patch"

  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
  rm -rf tools/clang
  cp -r "${srcdir}/clang-${pkgver}.src" tools/clang

  # 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

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

  # 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)"

  _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

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

  # Apply external patches
  patch -Np1 -i "${srcdir}/archlinux-fix-gold-lto-linking.patch"
  patch -Np1 -i "${srcdir}/fedora-llvm-2.6-timestamp.patch"

  ./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 \
              --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_llvm() {
  pkgdesc="Low Level Virtual Machine"
  depends=('perl' 'libffi')

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

  # The OCaml binding installation is currently broken, let's fix it
  # see https://github.com/mxcl/homebrew/issues/8947#issuecomment-3256464
  sed -i 's#^install-meta:: \$(ObjDir)/META.llvm$#install-meta:: $(OcamlDir)/META.llvm#g' bindings/ocaml/llvm/Makefile

  # 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

  # 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"

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

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

  # 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"

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

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

  cd "${srcdir}/${pkgname}-${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/"
  # It looks like clang still needs GCC to assemble and link object files
  # See http://old.nabble.com/%22clang--v%22-shows-a-GCC-call-td28378453.html
  depends=("llvm=${pkgver}-${pkgrel}" "gcc=${_gcc_ver}")

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

  cd "${srcdir}/${pkgname}-${pkgver}.src/tools/clang"
  make DESTDIR="${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:' \
    "${srcdir}/${pkgname}-${pkgver}.src/Makefile.config"

  # Install old libstdc++ headers. Contains combined headers from
  # gcc 4.5.2-6-i686 and gcc-multilib-4.5.2-6-x86_64
  # install -d "${pkgdir}/usr/include/c++"
  # cp -rd "${srcdir}/gcc-headers-${_gcc_ver}" "${pkgdir}/usr/include/c++/clang-${pkgver}"

  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 "${srcdir}/${pkgname}-${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

  # Use Python 2
  sed -i 's/env 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: