mesa-mini.sh

#!/bin/sh

set -e

get-pkgbuild
cd "$BUILD_DIR"

common_gallium=radeonsi,softpipe,virgl,zink
common_vulkan=amd,virtio,gfxstream

# drivers to build per architecture
case "$ARCH" in
	x86_64)
		gallium_drivers=r600,crocus,iris,nouveau,svga,$common_gallium
		vulkan_drivers=intel,intel_hasvk,$common_vulkan
		;;
	aarch64)
		gallium_drivers=asahi,freedreno,etnaviv,lima,panfrost,v3d,vc4,nouveau,$common_gallium
		vulkan_drivers=asahi,broadcom,freedreno,panfrost,imagination,$common_vulkan
		;;
	riscv64|loongarch64)
		gallium_drivers=$common_gallium
		vulkan_drivers=
		;;
	ppc64le)
		gallium_drivers=r600,nouveau,$common_gallium
		vulkan_drivers=
		;;
	ppc64)
		gallium_drivers=r300,r600,$common_gallium
		vulkan_drivers=
		;;
esac

# drop the drivers and packages that don't belong to the target architecture
case "$ARCH" in
	x86_64)
		delete-func vulkan-freedreno vulkan-asahi vulkan-broadcom vulkan-panfrost vulkan-powervr
		sed -i \
			-e '/_pick vkfdreno/d'    \
			-e '/_pick vkasahi/d'     \
			-e '/_pick vkbrcom/d'     \
			-e '/_pick vkpfrost/d'    \
			-e '/_pick vkpowrvr/d'    \
			-e "s|gallium-drivers=.*|gallium-drivers=$gallium_drivers|" \
			-e "s|vulkan-drivers=.*|vulkan-drivers=$vulkan_drivers|"    \
			"$PKGBUILD"
		;;
	aarch64)
		delete-func vulkan-intel
		sed -i \
			-e 's/-D video-codecs=all/-D video-codecs=all -D legacy-wayland=bind-wayland-display/' \
			-e '/_pick vkintel/d' \
			-e "s|gallium-drivers=.*|gallium-drivers=$gallium_drivers|" \
			-e "s|vulkan-drivers=.*|vulkan-drivers=$vulkan_drivers|"    \
			"$PKGBUILD"
		;;
	riscv64|loongarch64|ppc64le|ppc64)
		# the ported arches can only build libgallium, there are no vulkan drivers
		delete-func opencl-mesa vulkan-asahi vulkan-broadcom vulkan-dzn \
			vulkan-freedreno vulkan-gfxstream vulkan-intel vulkan-nouveau \
			vulkan-panfrost vulkan-powervr vulkan-radeon vulkan-swrast \
			vulkan-virtio vulkan-mesa-implicit-layers vulkan-mesa-layers
		sed -i \
			-e '/_pick vk\(asahi\|brcom\|d3d12\|fdreno\|gfxstr\|intel\|nvidia\|pfrost\|powrvr\|radeon\|swrast\|virtio\)/d' \
			-e '/_pick opencl/d' \
			-e "s|gallium-drivers=.*|gallium-drivers=$gallium_drivers|" \
			-e "s|vulkan-drivers=.*|vulkan-drivers=$vulkan_drivers|" \
			"$PKGBUILD"
		;;
esac

# debloat package, remove software rast, remove ancient drivers, build without linking to llvm
delete-func vulkan-swrast vulkan-kosmickrisp vulkan-nouveau opencl-mesa vulkan-dzn
sed -i \
	-e '/llvm-libs/d'           \
	-e '/sysprof/d'             \
	-e '/_pick vkswrast/d'      \
	-e '/_pick vknvidia/d'      \
	-e '/_pick opencl/d'        \
	-e '/_pick vkkosmic/d'      \
	-e '/_pick vkd3d12/d'       \
	-e '/gallium-rusticl-enable-drivers/d' \
	-e 's/intel-rt=enabled/intel-rt=disabled/'         \
	-e 's/gallium-rusticl=true/gallium-rusticl=false/' \
	-e 's/valgrind=enabled/valgrind=disabled/'         \
	-e 's/-D video-codecs=all/-D video-codecs=all -D amd-use-llvm=false -D draw-use-llvm=false/' \
	"$PKGBUILD"

# Patch AMDGPU DRM version check for compatibility with older kernels
sed -i '/^  cd mesa-\$_pkgver$/a\
	echo "Patching amdgpu DRM version check..."\
	find . -name "ac_gpu_info.c" -print -exec sed -i "s/info->drm_minor < 54/info->drm_minor < 0/" {} \\;' "$PKGBUILD"

# Replace gen_perf.py with a stub to drop the Intel OA performance-counter
# metrics (~4.5MiB of const data for GL_INTEL_performance_query). The stub keeps
# the same generated API (no-op intel_oa_register_queries_*), so iris/crocus and
# intel_perf.c compile/link unchanged; the perf query extension just reports no
# counters at runtime. Saves ~5MiB in libgallium.
sed -i '/^  cd mesa-\$_pkgver$/a\
	echo "Patching gen_perf.py (drop Intel OA perf metrics)..."\
	cat > src/intel/perf/gen_perf.py <<PYEOF\
import os, sys\
args = sys.argv[1:]\
code = args[args.index("--code") + 1]\
header = args[args.index("--header") + 1]\
gens = [os.path.basename(x)[3:-4] for x in args if os.path.basename(x).startswith("oa-")]\
NL = chr(10)\
Q = chr(34)\
open(header, "w").write("#pragma once" + NL + "struct intel_perf_config;" + NL + "".join("void intel_oa_register_queries_" + g + "(struct intel_perf_config *perf);" + NL for g in gens))\
open(code, "w").write("#include " + Q + "perf/intel_perf_metrics.h" + Q + NL + "".join("void intel_oa_register_queries_" + g + "(struct intel_perf_config *perf) { (void)perf; }" + NL for g in gens))\
PYEOF' "$PKGBUILD"

cat "$PKGBUILD"

# fail loudly instead of silently shipping a package without the debloat.
if ! grep -q "Patching gen_perf.py" "$PKGBUILD"; then
	>&2 echo "Failed to patch gen_perf.py!"
	exit 1
fi

# Do not build if version does not match with upstream
if check-upstream-version; then
	makepkg -fs --noconfirm --skippgpcheck
else
	exit 0
fi

ls -la
rm -fv ./*-docs-*.pkg.tar.* ./*-debug-*.pkg.tar.*
mv -v ./mesa-*.pkg.tar.zst ../mesa-mini-"$ARCH".pkg.tar.zst

# the ported arches build no vulkan drivers
case "$ARCH" in
	x86_64)
		mv -v ./vulkan-radeon-*.pkg.tar.zst  ../vulkan-radeon-mini-"$ARCH".pkg.tar.zst
		mv -v ./vulkan-virtio-*.pkg.tar.zst  ../vulkan-virtio-mini-"$ARCH".pkg.tar.zst
		mv -v ./vulkan-intel-*.pkg.tar.zst   ../vulkan-intel-mini-"$ARCH".pkg.tar.zst
		;;
	aarch64)
		mv -v ./vulkan-radeon-*.pkg.tar.zst  ../vulkan-radeon-mini-"$ARCH".pkg.tar.zst
		mv -v ./vulkan-virtio-*.pkg.tar.zst  ../vulkan-virtio-mini-"$ARCH".pkg.tar.zst
		mv -v ./vulkan-broadcom-*.pkg.tar.zst  ../vulkan-broadcom-mini-"$ARCH".pkg.tar.zst
		mv -v ./vulkan-panfrost-*.pkg.tar.zst  ../vulkan-panfrost-mini-"$ARCH".pkg.tar.zst
		mv -v ./vulkan-freedreno-*.pkg.tar.zst ../vulkan-freedreno-mini-"$ARCH".pkg.tar.zst
		mv -v ./vulkan-asahi-*.pkg.tar.zst     ../vulkan-asahi-mini-"$ARCH".pkg.tar.zst
		mv -v ./vulkan-powervr-*.pkg.tar.zst   ../vulkan-powervr-mini-"$ARCH".pkg.tar.zst
		;;
esac

echo "All done!"