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+# Maintainer: SovietReimu1228 <reimussr at protonmail dot ch>
+
+pkgname=mesa-rusticl-git
+pkgdesc="An open-source implementation of the OpenGL specification, with Rusticl"
+pkgver=22.1.0_devel.150548.320d00f985a.d41d8cd98f00b204e9800998ecf8427e
+pkgrel=1
+arch=('x86_64')
+makedepends=('python-mako' 'libxml2' 'libx11' 'xorgproto' 'libdrm' 'libxshmfence' 'libxxf86vm'
+             'libxdamage' 'libvdpau' 'libva' 'wayland' 'wayland-protocols' 'zstd' 'elfutils' 'llvm'
+             'libomxil-bellagio' 'libclc' 'clang' 'libglvnd' 'libunwind' 'lm_sensors' 'libxrandr'
+             'valgrind' 'glslang' 'vulkan-icd-loader' 'directx-headers' 'cmake' 'meson'
+             'rust' 'rust-bindgen')
+depends=('libdrm' 'libxcb' 'wayland' 'python'
+         'libclc' 'clang'
+         'libx11' 'libxshmfence' 'zstd'
+         'libelf' 'llvm-libs'
+         'expat'
+         'libxxf86vm' 'libxdamage' 'libomxil-bellagio' 'libunwind' 'lm_sensors' 'libglvnd' 'vulkan-icd-loader'
+         'spirv-llvm-translator')
+optdepends=('opencl-headers: headers necessary for OpenCL development'
+            'opengl-man-pages: for the OpenGL API man pages'
+            'compiler-rt: opencl')
+provides=('vulkan-mesa-layers' 'opencl-mesa' 'vulkan-intel' 'vulkan-radeon' 'vulkan-swrast' 'libva-mesa-driver' 'mesa-vdpau' 'mesa'
+          'opencl-driver' 'vulkan-driver' 'mesa-libgl' 'opengl-driver')
+conflicts=('vulkan-mesa-layers' 'opencl-mesa' 'vulkan-intel' 'vulkan-radeon' 'vulkan-swrast' 'libva-mesa-driver' 'mesa-vdpau' 'mesa'
+           'vulkan-mesa-layer' 'vulkan-mesa' 'mesa-libgl')
+url="https://www.mesa3d.org"
+license=('custom')
+# I couldn't build rusticl/wip branch, so I set branch to rusticl/main.
+source=('mesa::git+https://gitlab.freedesktop.org/karolherbst/mesa.git#branch=rusticl/main'
+        'LICENSE')
+md5sums=('SKIP'
+         '5c65a0fe315dd347e09b1f2826a1df5a')
+sha512sums=('SKIP'
+            '25da77914dded10c1f432ebcbf29941124138824ceecaf1367b3deedafaecabc082d463abcfa3d15abff59f177491472b505bcb5ba0c4a51bb6b93b4721a23c2')
+
+# NINJAFLAGS is an env var used to pass commandline options to ninja
+# NOTE: It's your responbility to validate the value of $NINJAFLAGS. If unsure, don't set it.
+
+pkgver() {
+    cd mesa
+    local _ver
+    read -r _ver <VERSION
+
+    local _patchver
+    local _patchfile
+    for _patchfile in "${source[@]}"; do
+        _patchfile="${_patchfile%%::*}"
+        _patchfile="${_patchfile##*/}"
+        [[ $_patchfile = *.patch ]] || continue
+        _patchver="${_patchver}$(md5sum ${srcdir}/${_patchfile} | cut -c1-32)"
+    done
+    _patchver="$(echo -n $_patchver | md5sum | cut -c1-32)"
+
+    echo ${_ver/-/_}.$(git rev-list --count HEAD).$(git rev-parse --short HEAD).${_patchver}
+}
+
+prepare() {
+    # although removing _build folder in build() function feels more natural,
+    # that interferes with the spirit of makepkg --noextract
+    if [  -d _build ]; then
+        rm -rf _build
+    fi
+
+    local _patchfile
+    for _patchfile in "${source[@]}"; do
+        _patchfile="${_patchfile%%::*}"
+        _patchfile="${_patchfile##*/}"
+        [[ $_patchfile = *.patch ]] || continue
+        echo "Applying patch $_patchfile..."
+        patch --directory=mesa --forward --strip=1 --input="${srcdir}/${_patchfile}"
+    done
+}
+
+build () {
+    meson setup mesa _build \
+        -D b_ndebug=true \
+        -D prefix=/usr \
+        -D sysconfdir=/etc \
+        -D platforms=x11,wayland \
+        -D gallium-drivers=r300,r600,radeonsi,nouveau,svga,swrast,virgl,iris,zink,crocus,d3d12 \
+        -D vulkan-drivers=amd,intel,swrast \
+        -D dri3=enabled \
+        -D egl=enabled \
+        -D gallium-extra-hud=true \
+        -D gallium-nine=true \
+        -D gallium-omx=bellagio \
+        -D gallium-va=enabled \
+        -D gallium-vdpau=enabled \
+        -D gallium-xa=enabled \
+        -D gallium-xvmc=disabled \
+        -D gbm=enabled \
+        -D gles1=disabled \
+        -D gles2=enabled \
+        -D glvnd=true \
+        -D glx=dri \
+        -D libunwind=enabled \
+        -D llvm=enabled \
+        -D lmsensors=enabled \
+        -D osmesa=true \
+        -D shared-glapi=enabled \
+        -D valgrind=enabled \
+        -D vulkan-layers=device-select,intel-nullhw,overlay \
+        -D microsoft-clc=disabled \
+        -D gallium-rusticl=true \
+        -D opencl-spirv=true \
+        -D shader-cache=enabled
+       
+    meson configure _build
+    
+    ninja $NINJAFLAGS -C _build
+}
+
+package() {
+    DESTDIR="${pkgdir}" ninja $NINJAFLAGS -C _build install
+
+    # remove script file from /usr/bin
+    # https://gitlab.freedesktop.org/mesa/mesa/issues/2230
+    rm "${pkgdir}/usr/bin/mesa-overlay-control.py"
+    rmdir "${pkgdir}/usr/bin"
+
+    # indirect rendering
+    ln -s /usr/lib/libGLX_mesa.so.0 "${pkgdir}/usr/lib/libGLX_indirect.so.0"
+  
+    install -m644 -Dt "${pkgdir}/usr/share/licenses/${pkgname}" "${srcdir}/LICENSE"
+}