# Maintainer: Llewelyn Trahaearn <woefulderelict [at] gmail [dot] com>
# Contributor: Daniel Micay <danielmicay [at] gmail [dot] com>
# Contributor: MThinkCpp <mtc [dot] maintainer [at] outlook [dot] com>

pkgbase=libc++
pkgname=(${pkgbase}{,abi,experimental})
pkgver=6.0.1
pkgrel=1
url="https://libcxx.llvm.org/"
license=('MIT' 'custom:University of Illinois/NCSA Open Source License')
arch=('i686' 'x86_64')
depends=('gcc-libs')
makedepends=('clang' 'cmake' 'ninja' 'python' 'libunwind')
source=("https://releases.llvm.org/$pkgver/llvm-$pkgver.src.tar.xz"{,.sig}
        "https://releases.llvm.org/$pkgver/libcxx-$pkgver.src.tar.xz"{,.sig}
        "https://releases.llvm.org/$pkgver/libcxxabi-$pkgver.src.tar.xz"{,.sig})
noextract=("${source[@]##*/}")
sha512sums=('cbbb00eb99cfeb4aff623ee1a5ba075e7b5a76fc00c5f9f539ff28c108598f5708a0369d5bd92683def5a20c2fe60cab7827b42d628dbfcc79b57e0e91b84dd9'
            'SKIP'
            'c04f628b0924d76f035f615b59d19ce42dfc19c9a8eea4fe2b22a95cfe5a037ebdb30943fd741443939df5b4cf692bc1e51c840fefefbd134e3afbe2a75fe875'
            'SKIP'
            'bbb4c7b412e295cb735f637df48a83093eef45ed5444f7766790b4b047f75fd5fd634d8f3a8ac33a5c1407bd16fd450ba113f60a9bcc1d0a911fe0c54e9c81f2'
            'SKIP')
# see https://releases.llvm.org/download.html
validpgpkeys=(# Tom Stellard <tstellar@redhat.com> (.1 releases)
              # https://pgp.mit.edu/pks/lookup?op=get&search=0xA2C794A986419D8A
              474E22316ABF4785A88C6E8EA2C794A986419D8A
              # Hans Wennborg <hans@chromium.org> (.0 releases)
              # https://releases.llvm.org/6.0.0/hans-gpg-key.asc
              B6C8F98282B944E3B0D5C2530FC3042E345AD05D)
 
prepare() {
  [[ -d llvm ]] || mkdir llvm
  bsdtar --strip-components 1 --uid 0 --gid 0 -zxf \
         ${srcdir}/${source[0]##*/} -C \
         llvm
  [[ -d llvm/projects/libcxx ]] || mkdir llvm/projects/libcxx
  bsdtar --strip-components 1 --uid 0 --gid 0 -zxf \
         ${srcdir}/${source[2]##*/} -C \
         llvm/projects/libcxx
  [[ -d llvm/projects/libcxxabi ]] || mkdir  llvm/projects/libcxxabi
  bsdtar --strip-components 1 --uid 0 --gid 0 -zxf \
         ${srcdir}/${source[4]##*/} -C \
         llvm/projects/libcxxabi
  sed -i 's/CREDITS.TXT/CREDITS/' llvm/projects/libcxx/LICENSE.TXT
  sed -i 's/CREDITS.TXT/CREDITS/' llvm/projects/libcxxabi/LICENSE.TXT
  [[ -d build ]] || mkdir build
}
 
build() {
  cd build
  cmake \
    -G Ninja \
    -DCMAKE_BUILD_TYPE=Release \
    -DCMAKE_INSTALL_PREFIX=/usr \
    -DCMAKE_C_COMPILER=clang \
    -DCMAKE_CXX_COMPILER=clang++ \
    -DLIBCXX_ENABLE_EXPERIMENTAL_LIBRARY=On \
    -DLIBCXX_INSTALL_EXPERIMENTAL_LIBRARY=Off \
    ${srcdir}/llvm
  ninja cxx cxx_experimental
}

check() {
  cd build
  ninja check-cxx
}

package_libc++() {
  pkgdesc='LLVM C++ standard library.'
  depends=("libc++abi=${pkgver}-${pkgrel}")
  cd ${srcdir}/build
  DESTDIR="${pkgdir}" ninja install-libcxx

  # Remove ABI headers.
  rm "${pkgdir}/usr/include/c++/v1/cxxabi.h"
  rm "${pkgdir}/usr/include/c++/v1/__cxxabi_config.h"

  # Remove experimental headers.
  rm -rf "${pkgdir}/usr/include/c++/v1/experimental"

  # License.
  install -Dm644 ${srcdir}/llvm/projects/libcxx/CREDITS.TXT "${pkgdir}/usr/share/licenses/${pkgname}/CREDITS"
  install -Dm644 ${srcdir}/llvm/projects/libcxx/LICENSE.TXT "${pkgdir}/usr/share/licenses/${pkgname}/LICENSE"
}
 
package_libc++abi() {
  pkgdesc='Low level support for the LLVM C++ standard library.'
  cd ${srcdir}/build
  DESTDIR="${pkgdir}" ninja install-libcxxabi
  install -Dm644 ${srcdir}/build/include/c++/v1/cxxabi.h "${pkgdir}/usr/include/c++/v1/cxxabi.h"
  install -Dm644 ${srcdir}/build/include/c++/v1/__cxxabi_config.h "${pkgdir}/usr/include/c++/v1/__cxxabi_config.h"
  install -Dm644 ${srcdir}/llvm/projects/libcxxabi/CREDITS.TXT "${pkgdir}/usr/share/licenses/${pkgname}/CREDITS"
  install -Dm644 ${srcdir}/llvm/projects/libcxxabi/LICENSE.TXT "${pkgdir}/usr/share/licenses/${pkgname}/LICENSE"
}
 
package_libc++experimental() {
  depends=("libc++=$pkgver-$pkgrel")
  pkgdesc='LLVM C++ experimental library.'
  install -Dm644 ${srcdir}/build/lib/libc++experimental.a ${pkgdir}/usr/lib/libc++experimental.a
  install -Dm644 -t ${pkgdir}/usr/include/c++/v1/experimental ${srcdir}/build/include/c++/v1/experimental/*
  install -Dm644 ${srcdir}/llvm/projects/libcxx/CREDITS.TXT "${pkgdir}/usr/share/licenses/${pkgname}/CREDITS"
  install -Dm644 ${srcdir}/llvm/projects/libcxx/LICENSE.TXT "${pkgdir}/usr/share/licenses/${pkgname}/LICENSE"
}