pkgname=mingw-w64-mesa
pkgver=19.0.3
pkgrel=1
pkgdesc="An open-source implementation of the OpenGL specification (mingw-w64)"
arch=('any')
url="https://www.mesa3d.org/"
license=("custom")
makedepends=('mingw-w64-gcc' 'scons' 'python2-mako')
depends=('mingw-w64-dlfcn' 'mingw-w64-llvm')
options=('staticlibs' '!strip' '!buildflags')
validpgpkeys=('71C4B75620BC75708B4BDB254C95FAAB3EB073EC') # Dylan Baker <dylan@pnwbakers.com>
source=(https://mesa.freedesktop.org/archive/mesa-${pkgver}.tar.xz{,.sig})
sha256sums=('f027244e38dc309a4c12db45ef79be81ab62c797a50a88d566e4edb6159fc4d5' SKIP)

_architectures="i686-w64-mingw32 x86_64-w64-mingw32"

prepare () {
  cd "${srcdir}"/mesa-${pkgver}
  # sh: /usr/bin/i686-w64-mingw32-g++-posix: No such file or directory
  sed -i "s|env\['CXX'\] = env\['CXX'\] + '-posix'||g" scons/llvm.py

  # hack: libLLVMSupport.a: undefined reference to `compressBound'
  sed -i "s|'LLVMSupport',|'LLVMSupport','z',|g" scons/llvm.py
}

build() {
  cd "${srcdir}"/mesa-${pkgver}
  for _arch in ${_architectures}; do
    if test "${_arch}" = x86_64-w64-mingw32
    then
      machine="x86_64"
    else
      machine="x86"
    fi
    LLVM=/usr/${_arch} scons platform=windows toolchain=crossmingw machine=${machine} build=release libgl-gdi
  done
}

package() {
  cd "${srcdir}"/mesa-${pkgver}
  for _arch in ${_architectures}; do
    if test "${_arch}" = x86_64-w64-mingw32
    then
      machine="x86_64"
    else
      machine="x86"
    fi
    install -d "$pkgdir"/usr/${_arch}/bin
    install -m755 build/windows-${machine}/gallium/targets/libgl-gdi/opengl32.dll "$pkgdir"/usr/${_arch}/bin
    ${_arch}-strip --strip-unneeded "$pkgdir"/usr/${_arch}/bin/*.dll
  done
}