# $Id$
# 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>

# ALARM: Kevin Mihelich <kevin@archlinuxarm.org>
#  - v5: disable compiler-rt, don't install in clang package
#  - v5: patch to remove ThreadPool: unsupported c++ usage
#  - v5: disable lldb, unsupported c++ usage
#  - v8: disable lldb, unsupported architecture

pkgname=('llvm' 'llvm-libs' 'llvm-ocaml' 'lldb' 'clang' 'clang-tools-extra')
pkgver=3.8.0
pkgrel=1
_ocaml_ver=4.02.3
arch=('i686' 'x86_64')
url="http://llvm.org/"
license=('custom:University of Illinois/NCSA Open Source License')
makedepends=('cmake' 'libffi' 'python2' "ocaml=$_ocaml_ver" 'python-sphinx'
             'ocaml-ctypes' 'ocaml-findlib' 'libedit' 'swig')
# Use gcc-multilib to build 32-bit compiler-rt libraries on x86_64 (FS#41911)
makedepends_x86_64=('gcc-multilib')
options=('staticlibs')
source=(http://llvm.org/releases/$pkgver/llvm-$pkgver.src.tar.xz{,.sig}
        http://llvm.org/releases/$pkgver/cfe-$pkgver.src.tar.xz{,.sig}
        http://llvm.org/releases/$pkgver/clang-tools-extra-$pkgver.src.tar.xz{,.sig}
        http://llvm.org/releases/$pkgver/compiler-rt-$pkgver.src.tar.xz{,.sig}
        http://llvm.org/releases/$pkgver/lldb-$pkgver.src.tar.xz{,.sig}
        D17567-PR23529-Sema-part-of-attrbute-abi_tag-support.patch
        D18035-PR23529-Mangler-part-of-attrbute-abi_tag-support.patch
        llvm-Config-llvm-config.h
        remove-threadpool.patch)
sha256sums=('555b028e9ee0f6445ff8f949ea10e9cd8be0d084840e21fbbe1d31d51fc06e46'
            'SKIP'
            '04149236de03cf05232d68eb7cb9c50f03062e339b68f4f8a03b650a11536cf9'
            'SKIP'
            'afbda810106a6e64444bc164b921be928af46829117c95b996f2678ce4cb1ec4'
            'SKIP'
            'c8d3387e55f229543dac1941769120f24dc50183150bf19d1b070d53d29d56b0'
            'SKIP'
            'e3f68f44147df0433e7989bf6ed1c58ff28d7c68b9c47553cb9915f744785a35'
            'SKIP'
            '406754764e83d58bc3b859ab4b7893abd48c760278c4619cf4341ef9b9b75c85'
            'd2ea6d06352d378961a6970cdefb23ef1ba8e4c046c0ace0c479e2dd674aabce'
            '597dc5968c695bbdbb0eac9e8eb5117fcd2773bc91edf5ec103ecffffab8bc48'
            'ea686a21076aeefdb81af22ab7e5d786e4f6d490507320275f443d8bcf663040')
validpgpkeys=('B6C8F98282B944E3B0D5C2530FC3042E345AD05D')

prepare() {
  cd "$srcdir/llvm-$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 "$srcdir/cfe-$pkgver.src" tools/clang

  mv "$srcdir/clang-tools-extra-$pkgver.src" tools/clang/tools/extra

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

  [[ $CARCH != 'aarch64' && $CARCH != 'arm' ]] && mv "$srcdir/lldb-$pkgver.src" tools/lldb

  # https://llvm.org/bugs/show_bug.cgi?id=23529
  patch -d tools/clang -Np2 <../D17567-PR23529-Sema-part-of-attrbute-abi_tag-support.patch
  patch -d tools/clang -Np0 <../D18035-PR23529-Mangler-part-of-attrbute-abi_tag-support.patch

  if [[ $CARCH == "arm" ]]; then
    patch -p1 -i ../remove-threadpool.patch
    rm lib/Support/ThreadPool.cpp
    rm include/llvm/Support/ThreadPool.h
    rm unittests/Support/ThreadPool.cpp
  fi

  mkdir build
}

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

  [[ $CARCH == "arm" ]] && CONFIG="-DLLVM_BUILD_EXTERNAL_COMPILER_RT=ON"

  cmake \
    -DCMAKE_BUILD_TYPE=Release \
    -DCMAKE_INSTALL_PREFIX=/usr \
    -DLLVM_BUILD_LLVM_DYLIB=ON \
    -DLLVM_DYLIB_EXPORT_ALL=ON \
    -DLLVM_LINK_LLVM_DYLIB=ON \
    -DLLVM_ENABLE_RTTI=ON \
    -DLLVM_ENABLE_FFI=ON \
    -DLLVM_BUILD_TESTS=ON \
    -DLLVM_BUILD_DOCS=ON \
    -DLLVM_ENABLE_SPHINX=ON \
    -DLLVM_ENABLE_DOXYGEN=OFF \
    -DSPHINX_WARNINGS_AS_ERRORS=OFF \
    -DFFI_INCLUDE_DIR=$(pkg-config --variable=includedir libffi) \
    -DLLVM_BINUTILS_INCDIR=/usr/include \
    $CONFIG ..

  make
  make ocaml_doc

  # Disable automatic installation of components that go into subpackages
  sed -i '/\(clang\|lldb\)\/cmake_install.cmake/d' tools/cmake_install.cmake
  sed -i '/extra\/cmake_install.cmake/d' tools/clang/tools/cmake_install.cmake
  sed -i '/compiler-rt\/cmake_install.cmake/d' projects/cmake_install.cmake
}

check() {
  cd "$srcdir/llvm-$pkgver.src/build"
  make check
  make check-clang || { [[ $CARCH == i686 ]] && warning \
    'Ignoring clang test failures caused by name mangling differences'; }
}

package_llvm() {
  pkgdesc="Low Level Virtual Machine"
  depends=("llvm-libs=$pkgver-$pkgrel" 'perl')

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

  make -C build DESTDIR="$pkgdir" install

  # Remove documentation sources
  rm -r "$pkgdir"/usr/share/doc/$pkgname/html/{_sources,.buildinfo}

  # The runtime libraries go into llvm-libs
  mv -f "$pkgdir"/usr/lib/lib{LLVM,LTO}*.so "$srcdir"
  mv -f "$pkgdir"/usr/lib/LLVMgold.so "$srcdir"

  # OCaml bindings go to a separate package
  rm -rf "$srcdir"/ocaml.{lib,doc}
  mv "$pkgdir/usr/lib/ocaml" "$srcdir/ocaml.lib"
  mv "$pkgdir/usr/docs/ocaml/html" "$srcdir/ocaml.doc"
  rm -r "$pkgdir/usr/docs"

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

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

package_llvm-libs() {
  pkgdesc="Low Level Virtual Machine (runtime libraries)"
  depends=('gcc-libs' 'zlib' 'libffi' 'libedit' 'ncurses')

  install -d "$pkgdir/usr/lib"
  cp -P \
    "$srcdir"/lib{LLVM,LTO}*.so \
    "$srcdir"/LLVMgold.so \
    "$pkgdir/usr/lib/"

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

  install -Dm644 "$srcdir/llvm-$pkgver.src/LICENSE.TXT" \
    "$pkgdir/usr/share/licenses/$pkgname/LICENSE"
}

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

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

  install -d "$pkgdir"/{usr/lib,usr/share/doc}
  cp -a "$srcdir/ocaml.lib" "$pkgdir/usr/lib/ocaml"
  cp -a "$srcdir/ocaml.doc" "$pkgdir/usr/share/doc/$pkgname"

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

package_lldb() {
  pkgdesc="Next generation, high-performance debugger"
  url="http://lldb.llvm.org/"
  depends=('libedit' 'libxml2' 'python2' 'python2-six')

  [[ $CARCH == "aarch64" || $CARCH == "arm" ]] && return

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

  make -C build/tools/lldb DESTDIR="$pkgdir" install

  # Remove bundled six library
  rm "$pkgdir/usr/lib/python2.7/site-packages/six.py"

  # Compile Python scripts
  python2 -m compileall "$pkgdir/usr/lib/python2.7/site-packages/lldb"
  python2 -O -m compileall "$pkgdir/usr/lib/python2.7/site-packages/lldb"

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

package_clang() {
  pkgdesc="C language family frontend for LLVM"
  url="http://clang.llvm.org/"
  depends=("llvm-libs=$pkgver-$pkgrel" 'gcc' 'libxml2')
  optdepends=('openmp: OpenMP support in clang with -fopenmp'
              'python2: for scan-view and git-clang-format')
  provides=("clang-analyzer=$pkgver")
  conflicts=('clang-analyzer')
  replaces=('clang-analyzer')

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

  make -C build/tools/clang DESTDIR="$pkgdir" install
  [[ $CARCH != "arm" ]] && make -C build/projects/compiler-rt DESTDIR="$pkgdir" install

  # Remove documentation sources
  rm -r "$pkgdir"/usr/share/doc/$pkgname/html/{_sources,.buildinfo}

  # Move analyzer scripts out of /usr/libexec
  mv "$pkgdir"/usr/libexec/{ccc,c++}-analyzer "$pkgdir/usr/lib/clang/"
  rmdir "$pkgdir/usr/libexec"
  sed -i 's|libexec|lib/clang|' "$pkgdir/usr/bin/scan-build"

  # Install Python bindings
  install -d "$pkgdir/usr/lib/python2.7/site-packages"
  cp -a tools/clang/bindings/python/clang "$pkgdir/usr/lib/python2.7/site-packages/"

  # Use Python 2
  sed -i 's|/usr/bin/env python|&2|' \
    "$pkgdir/usr/bin/scan-view" \
    "$pkgdir/usr/bin/git-clang-format" \
    "$pkgdir/usr/share/$pkgname/clang-format-diff.py"

  # Compile Python scripts
  python2 -m compileall "$pkgdir"
  python2 -O -m compileall "$pkgdir"

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

package_clang-tools-extra() {
  pkgdesc="Extra tools built using clang's tooling APIs"
  url="http://clang.llvm.org/"
  depends=("clang=$pkgver-$pkgrel")

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

  make -C build/tools/clang/tools/extra DESTDIR="$pkgdir" install

  # Use Python 2
  sed -i \
    -e 's|env python$|&2|' \
    -e 's|/usr/bin/python$|&2|' \
    "$pkgdir"/usr/share/clang/{clang-tidy-diff,run-clang-tidy}.py

  install -Dm644 tools/clang/tools/extra/LICENSE.TXT \
    "$pkgdir/usr/share/licenses/$pkgname/LICENSE"
}

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