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# Maintainer: Lone_Wolf <lonewolf at xs4all dot nl>
# Contributor: Armin K. <krejzi at email dot com>
# Contributor: Kristian Klausen <klausenbusk@hotmail.com>
# Contributor: Egon Ashrafinia <e.ashrafinia@gmail.com>
# Contributor: Tavian Barnes <tavianator@gmail.com>
# Contributor: Jan de Groot <jgc@archlinux.org>
# Contributor: Andreas Radke <andyrtr@archlinux.org>
# Contributor: Thomas Dziedzic < gostrc at gmail >
# Contributor: Antti "Tera" Oja <antti.bofh@gmail.com>
# Contributor: Diego Jose <diegoxter1006@gmail.com>

pkgname=(lib32-mesa-git)
pkgdesc="an open-source implementation of the OpenGL specification, git version"
pkgver=19.2.0_devel.110857.8b3baa27440
pkgrel=1
arch=('x86_64')
makedepends=('python-mako' 'lib32-libxml2' 'lib32-libx11' 'xorgproto'
             'lib32-gcc-libs' 'lib32-libvdpau' 'lib32-libelf' 'git' 'lib32-libgcrypt' 'lib32-systemd'
             'mesa-git' 'lib32-libglvnd' 'wayland-protocols' 'lib32-wayland' 'meson' 'lib32-libva' 'lib32-libxrandr')
depends=('mesa-git' 'lib32-gcc-libs' 'lib32-libdrm' 'lib32-wayland' 'lib32-libxxf86vm' 'lib32-libxdamage' 'lib32-libxshmfence' 'lib32-elfutils'
           'lib32-libunwind' 'lib32-lm_sensors' 'glslang')
optdepends=('opengl-man-pages: for the OpenGL API man pages')
provides=(lib32-mesa=$pkgver-$pkgrel lib32-vulkan-intel=$pkgver-$pkgrel lib32-vulkan-radeon=$pkgver-$pkgrel lib32-libva-mesa-driver=$pkgver-$pkgrel lib32-mesa-vdpau=$pkgver-$pkgrel 'lib32-opengl-driver')
conflicts=('lib32-mesa' 'lib32-vulkan-intel' 'lib32-vulkan-radeon' 'lib32-libva-mesa-driver' 'lib32-mesa-vdpau')
url="https://www.mesa3d.org"
license=('custom')
source=('mesa::git://anongit.freedesktop.org/mesa/mesa'
         'LICENSE'
	'llvm32.native'
)

md5sums=('SKIP'
         '5c65a0fe315dd347e09b1f2826a1df5a'
         '6b4a19068a323d7f90a3d3cd315ed1f9')
sha512sums=('SKIP'
            '25da77914dded10c1f432ebcbf29941124138824ceecaf1367b3deedafaecabc082d463abcfa3d15abff59f177491472b505bcb5ba0c4a51bb6b93b4721a23c2'
            'c7dbb390ebde291c517a854fcbe5166c24e95206f768cc9458ca896b2253aabd6df12a7becf831998721b2d622d0c02afdd8d519e77dea8e1d6807b35f0166fe')

# mesa_which_llvm is an evironment variable used to determine which llvm package tree is used to built mesa-git against
# 1: lone_wolf-llvm-git (aur) Default value
# 2: llvm-git (aur)
# 3  llvm-svn (lordheavy unoffical repo)
# 4  llvm (stable from extra)
# 
# N.B. make sure lib32-mesa-git uses same value for this as mesa-git to avoid problems !

if [[ ! $mesa_which_llvm ]] ; then
    mesa_which_llvm=1
fi

case $mesa_which_llvm in
    1)
        # aur lone_wolf-llvm-git
        makedepends+=('lone_wolf-lib32-llvm-git')
        depends+=('lone_wolf-lib32-llvm-libs-git')
        ;;
    2)
        # aur llvm-git
        makedepends+=('lib32-llvm-git')
        depends+=('lib32-llvm-libs-git')
        ;;
    3)
        # mesa-git/llvm-svn (lordheavy unofficial repo)
        makedepends+=('lib32-llvm-svn')
        depends+=('lib32-llvm-libs-svn')
        ;;
    4)
        # extra/llvm
        makedepends+=(lib32-llvm=8.0.0)
        depends+=(lib32-llvm-libs=8.0.0)
        ;;
    *)
esac


pkgver() {
    cd mesa
    read -r _ver <VERSION
    echo ${_ver/-/_}.$(git rev-list --count HEAD).$(git rev-parse --short HEAD)
}

build () {
    export CC="gcc -m32"
    export CXX="g++ -m32"
    export PKG_CONFIG=/usr/bin/pkg-config-32  

      if [  -d _build ]; then
        rm -rf _build
    fi
    meson setup mesa _build \
        --native-file llvm32.native \
        -D b_ndebug=true \
        -D buildtype=plain \
        --wrap-mode=nofallback \
        -D prefix=/usr \
        -D sysconfdir=/etc \
        --libdir=/usr/lib32 \
        -D platforms=x11,wayland,drm,surfaceless \
        -D dri-drivers=i915,i965,r200,r100,nouveau \
        -D gallium-drivers=r300,r600,radeonsi,nouveau,svga,swrast,virgl,iris \
        -D vulkan-drivers=amd,intel \
        -D dri3=true \
        -D egl=true \
        -D gallium-extra-hud=true \
        -D vulkan-overlay-layer=true \
        -D gallium-nine=true \
        -D gallium-omx=disabled \
        -D gallium-opencl=disabled \
        -D gallium-va=true \
        -D gallium-vdpau=true \
        -D gallium-xa=true \
        -D gallium-xvmc=false \
        -D gbm=true \
        -D gles1=true \
        -D gles2=true \
        -D glvnd=true \
        -D glx=dri \
        -D libunwind=true \
        -D llvm=true \
        -D lmsensors=true \
        -D osmesa=gallium \
        -D shared-glapi=true \
        -D valgrind=false \
        -D tools=[] \

    meson configure _build
    if [[ ! $NINJAFLAGS ]]; then
        ninja  -C _build 
    else
        ninja  "$NINJAFLAGS" -C _build
    fi
}


package() {

  DESTDIR="$pkgdir" ninja -C _build install

  # remove files provided by mesa-git
  rm -rf "$pkgdir"/etc
  rm -rf "$pkgdir"/usr/include
  rm -rf "$pkgdir"/usr/share/glvnd/
  rm -rf "$pkgdir"/usr/share/drirc.d/
  rm -rf "$pkgdir"/usr/share/vulkan/explicit_layer.d/

  # indirect rendering
  ln -s /usr/lib32/libGLX_mesa.so.0 "${pkgdir}/usr/lib32/libGLX_indirect.so.0"
  install -Dt  "$pkgdir"/usr/share/licenses/$pkgbase/ -m644 "$srcdir"/LICENSE 
}