# Maintainer: Vladimir Panteleev <arch-pkg at thecybershadow.net>
# Contributor: zfo <zfoofz1@gmail.com>
# Contributor: Mihails Strasuns <public@dicebot.lv>
# Contributor: Sven-Hendrik Haase <sh@lutzhaase.com>

_pkgname=ldc
pkgname=("${_pkgname}-git" 'liblphobos-git')
groups=('dlang' 'dlang-ldc')
pkgver=v1.9.0.beta1
epoch=1
pkgrel=2
pkgdesc="A D Compiler based on the LLVM Compiler Infrastructure including D runtime and libphobos2"
arch=('i686' 'x86_64')
url="https://github.com/ldc-developers/ldc"
license=('BSD')
makedepends=('git' 'cmake' 'llvm' 'dmd' 'bash-completion')

source=("git+https://github.com/ldc-developers/ldc.git"
        "git+https://github.com/ldc-developers/druntime.git"
        "git+https://github.com/ldc-developers/phobos.git"
        "git+https://github.com/ldc-developers/dmd-testsuite.git"
        "ldc2.conf")
sha256sums=('SKIP'
            'SKIP'
            'SKIP'
            'SKIP'
            '7f7eea41e730175ea52993f82bef5bdea6d6fc628344cda9488c04bf4b430024')

pkgver() {
  cd "${srcdir}/${_pkgname}"
  git describe --tags HEAD | sed 's/-/./g'
}

prepare() {
  cd "${srcdir}/${_pkgname}"

  git submodule init
  git config submodule.druntime.url "${srcdir}/druntime"
  git config submodule.phobos.url "${srcdir}/phobos"
  git config submodule.tests/d2/dmd-testsuite.url "${srcdir}/dmd-testsuite"
  git submodule update

  # patch the config file to be /etc/ldc2-git.conf
  sed 's/ldc2[.]conf/ldc2-git.conf/' -i driver/configfile.cpp

  # patch ldc to properly link to ldc-git (needed for ldmd)
  sed 's/LDC_EXE ldc2/LDC_EXE ldc2-git/' -i CMakeLists.txt
  sed 's/LDMD_EXE ldmd2/LDMD_EXE ldmd2-git/' -i CMakeLists.txt

  # patch bash-completion
  sed 's/\(ldc2\?\)\b/\1-git/g' -i bash_completion.d/ldc2

  # it's faster just to rename the config files
  mv ldc2_phobos.conf.in ldc2-git_phobos.conf.in
  mv ldc2_install.conf.in ldc2-git_install.conf.in
}

build() {
  cd "${srcdir}/${_pkgname}"

  mkdir -p build && cd build

  # workaround for wrong ld flag format generated by cmake:
  # export LDFLAGS="-L-O1 -L--sort-common -L--as-needed -L-z -Lrelro"

  local args=(
    env

    # Use host DMD
    # This 1) ensures we use the main dmd package, and not something in the user's $PATH;
    # and 2) compilation with ldc links Phobos/Druntime as shared libraries;
    # dmd does static linking to the rescue!
    DMD=/usr/bin/dmd

    cmake
    -DCMAKE_INSTALL_PREFIX=/usr
    -DCMAKE_BUILD_TYPE=Release
    -DCMAKE_SKIP_RPATH=ON
    -DINCLUDE_INSTALL_DIR=/usr/include/dlang/ldc-git

    # This is the git version - use static linking by default
    -DBUILD_SHARED_LIBS=OFF

    # https://github.com/ldc-developers/ldc/issues/2661
    -DLDC_WITH_LLD=OFF

    ..
  )
  "${args[@]}"

  make
}

package_ldc-git() {
  local dmd_fe_ver
  dmd_fe_ver=$(sed -n 's/^.*dmd_version = "v\(.*\)";$/\1/p' \
                   "${srcdir}/${_pkgname}/build/driver/ldc-version.cpp")

  depends=('liblphobos-git' 'llvm-libs')
  backup=('etc/ldc2-git.conf')
  provides=("d-compiler=${dmd_fe_ver}")

  cd "${srcdir}/${_pkgname}/build"
  make install DESTDIR="${pkgdir}"

  # rename binaries
  for f in profdata prune-cache; do
    mv "${pkgdir}/usr/bin/ldc-$f" \
       "${pkgdir}/usr/bin/ldc-git-$f"
  done

  # rename bash-completion
  mv "${pkgdir}/usr/share/bash-completion/completions/ldc2" \
     "${pkgdir}/usr/share/bash-completion/completions/ldc2-git"

  # remove liblphobos files
  rm -rf "${pkgdir}/usr/include"
  rm -rf "${pkgdir}/usr/lib"

  # remove misc
  rm -rf "${pkgdir}/usr/bin/ldc-build-runtime"

  # symlinks
  ln -s ldc2-git "${pkgdir}/usr/share/bash-completion/completions/ldc-git"
  ln -s ldc2-git "${pkgdir}/usr/bin/ldc-git"
  ln -s ldmd2-git "${pkgdir}/usr/bin/ldmd-git"

  # licenses
  install -D -m644 "${srcdir}/ldc/LICENSE" "${pkgdir}/usr/share/licenses/${pkgname}/LICENSE"

  # default configuration files
  install -D -m644 "${srcdir}/ldc2.conf" "${pkgdir}/etc/ldc2-git.conf"
}

package_liblphobos-git() {
  provides=('d-runtime' 'd-stdlib')
  depends=('curl')

  cd "${srcdir}/ldc/build"
  make install DESTDIR="${pkgdir}"

  # remove ldc files
  rm -rf "${pkgdir}/usr/bin/"
  rm -rf "${pkgdir}/etc/"
  rm -rf "${pkgdir}/usr/share/bash-completion/"

  # rename libraries
  for f in libphobos2-ldc libdruntime-ldc libphobos2-ldc-debug libdruntime-ldc-debug \
                          libldc-jit libldc-jit-rt libldc-profile-rt; do
    for ext in a so; do
      test -e "${pkgdir}/usr/lib/$f.$ext" && \
          mv "${pkgdir}/usr/lib/$f.$ext" "${pkgdir}/usr/lib/$f-git.$ext"
    done
  done

  # licenses
  install -D -m644 "${srcdir}/ldc/LICENSE" "${pkgdir}/usr/share/licenses/${pkgname}/LICENSE"
}