name='lib32-mesa'
version='25.2.6'
release='5'
epoch='1'
desc='Open-source OpenGL and Vulkan drivers (32-bit) with AMD RDNA 4 support for gaming'
desc_ru='OpenGL и Vulkan драйверы (32-бит) с открытым исходным кодом с поддержкой AMD RDNA 4 для игр'
homepage='https://www.mesa3d.org/'
maintainer='Evgeniy Khramov <xpamych@yandex.ru>'
maintainer_ru='Евгений Храмов <xpamych@yandex.ru>'
architectures=('amd64')
license=('MIT' 'BSD-3-Clause' 'SGI-B-2.0')
provides=(
	'mesa-dri-drivers(x86-32)'
	'mesa-vulkan-drivers(x86-32)'
	'mesa-va-drivers(x86-32)'
	'mesa-vdpau-drivers(x86-32)'
	'mesa-libgbm(x86-32)'
	'mesa-libEGL(x86-32)'
	'mesa-libGL(x86-32)'
	'mesa-libGLES(x86-32)'
	'libglvnd-gles(x86-32)'
	'lib32-mesa'
	'lib32-mesa-dri-drivers'
	'lib32-mesa-vulkan-drivers'
	'lib32-mesa-va-drivers'
	'lib32-mesa-vdpau-drivers'
	'lib32-mesa-libgbm'
	'lib32-mesa-libEGL'
	'lib32-mesa-libGL'
	'lib32-mesa-libGLES'
	'lib32-vulkan-radeon'
	'lib32-libva-mesa-driver'
	'lib32-opengl-driver'
	'lib32-vulkan-driver'
	'libGLESv1_CM.so.1'
	'libGLESv2.so.2'
)
conflicts=(
	'mesa-dri-drivers(x86-32) < 25.2.6'
	'mesa-vulkan-drivers(x86-32) < 25.2.6'
	'mesa-va-drivers(x86-32) < 25.2.6'
	'mesa-vdpau-drivers(x86-32) < 25.2.6'
	'mesa-libgbm(x86-32) < 25.2.6'
	'mesa-libEGL(x86-32) < 25.2.6'
	'mesa-libGL(x86-32) < 25.2.6'
	'mesa-libGLES(x86-32) < 25.2.6'
	'libglvnd-gles(x86-32) < 25.2.6'
)

# 32-битные зависимости
deps=(
	'expat(x86-32)'
	'libdrm(x86-32)'
	'libelf(x86-32)'
	'libglvnd(x86-32)'
	'libx11(x86-32)'
	'libxcb(x86-32)'
	'libxext(x86-32)'
	'libxshmfence(x86-32)'
	'libxxf86vm(x86-32)'
	'libwayland-client(x86-32)'
	'libwayland-server(x86-32)'
	'zlib(x86-32)'
	'libzstd(x86-32)'
	'vulkan-icd-loader(x86-32)'
)

# Зависимости для RedOS (32-бит)
deps_redos=(
	'expat(x86-32)'
	'lib32-libdrm'
	'elfutils-libelf(x86-32)'
	'libglvnd(x86-32)'
	'libX11(x86-32)'
	'libxcb(x86-32)'
	'libXext(x86-32)'
	'libxshmfence(x86-32)'
	'libXxf86vm(x86-32)'
	'libwayland-client(x86-32)'
	'libwayland-server(x86-32)'
	'zlib(x86-32)'
	'libzstd(x86-32)'
	'vulkan-loader(x86-32)'
	'lib32-llvm18'
	'lib32-lm_sensors'
)

# Зависимости для сборки (в основном 64-бит tools + 32-бит libs)
build_deps=(
	'gcc'
	'clang'
	'meson'
	'ninja-build'
	'cmake'
	'python3'
	'python3-mako'
	'python3-packaging'
	'python3-pyyaml'
	'bison'
	'flex'
	'llvm18'
	'llvm18-devel'
	'clang-devel'
	'rust'
	'rust-bindgen-devel'
	'cbindgen'
	'glslang-devel'
	'spirv-tools-devel'
	'glibc-devel(x86-32)'
	'lib32-libdrm'
	'libxcb-devel(x86-32)'
	'libX11-devel(x86-32)'
	'libXext-devel(x86-32)'
	'libXxf86vm-devel(x86-32)'
	'libXfixes-devel(x86-32)'
	'libXdamage-devel(x86-32)'
	'libxshmfence-devel(x86-32)'
	'libXrandr-devel(x86-32)'
	'elfutils-libelf-devel(x86-32)'
	'libglvnd-devel(x86-32)'
	'wayland-devel(x86-32)'
	'wayland-protocols-devel'
	'libva-devel(x86-32)'
	'libvdpau-devel(x86-32)'
	'expat-devel(x86-32)'
	'libxml2-devel(x86-32)'
	'libzstd-devel(x86-32)'
	'lm_sensors-devel'
	'lib32-lm_sensors'
	'systemd-devel(x86-32)'
	'libpng-devel(x86-32)'
	'vulkan-headers'
	'vulkan-loader-devel(x86-32)'
	'lib32-llvm18'
)

build_deps_redos=("${build_deps[@]}")

_pkgver="${version}"

sources=("https://archive.mesa3d.org/mesa-${_pkgver}.tar.xz")
checksums=('361c97e8afa5fe20141c5362c5b489040751e12861c186a16c621a2fb182fc42')

prepare() {
	cd "$srcdir/mesa-${_pkgver}"

	# Установка версии для правильной идентификации
	echo "${version}-alr${epoch}.${release}" > VERSION

	# Create llvm-config-i386.h for 32-bit LLVM support
	echo "==> Creating llvm-config-i386.h for 32-bit LLVM..."
	sudo cp /usr/lib64/llvm18/include/llvm/Config/llvm-config-x86_64.h /usr/lib64/llvm18/include/llvm/Config/llvm-config-i386.h
	sudo sed -i 's/x86_64-redsoft-linux-gnu/i686-redsoft-linux-gnu/g' /usr/lib64/llvm18/include/llvm/Config/llvm-config-i386.h

	# Create meson cross-file for 32-bit compilation
	cat > "$srcdir/lib32-cross.ini" <<EOF
[binaries]
c = ['gcc', '-m32']
cpp = ['g++', '-m32']
ar = 'gcc-ar'
strip = 'strip'
pkg-config = 'pkg-config'

[built-in options]
c_args = ['-m32']
c_link_args = ['-m32']
cpp_args = ['-m32']
cpp_link_args = ['-m32']

[host_machine]
system = 'linux'
cpu_family = 'x86'
cpu = 'i686'
endian = 'little'
EOF

	echo "==> Preparing Mesa ${version} (32-bit) with LLVM for AMD RDNA 4 gaming support..."
}

build() {
	cd "$srcdir/mesa-${_pkgver}"

	# Set environment for 32-bit build
	export PKG_CONFIG_PATH="/usr/lib/pkgconfig:/usr/share/pkgconfig"
	export LLVM_CONFIG="/usr/bin/llvm-config-18"

	# 32-bit CFLAGS/CXXFLAGS
	export CFLAGS="-m32 -O2 -g1"
	export CXXFLAGS="-m32 -O2 -g1"
	export LDFLAGS="-m32"

	echo "==> Configuring Mesa (32-bit) with Meson..."
	meson setup builddir \
		--cross-file="$srcdir/lib32-cross.ini" \
		--prefix=/usr \
		--libdir=lib \
		--buildtype=release \
		-Db_ndebug=true \
		-Dplatforms=x11,wayland \
		-Dgallium-drivers=r300,r600,radeonsi,llvmpipe,softpipe,zink \
		-Dvulkan-drivers=amd,swrast \
		-Dvideo-codecs=all \
		-Dgallium-extra-hud=true \
		-Dgallium-rusticl=false \
		-Dgallium-va=enabled \
		-Dgallium-vdpau=enabled \
		-Dgbm=enabled \
		-Dgles1=disabled \
		-Dgles2=enabled \
		-Dglvnd=enabled \
		-Dglx=dri \
		-Degl=enabled \
		-Dllvm=enabled \
		-Dlmsensors=enabled \
		-Dvalgrind=disabled \
		-Dvulkan-layers=device-select,overlay \
		-Dintel-rt=disabled \
		-Dlibunwind=disabled \
		-Dmicrosoft-clc=disabled

	echo "==> Building Mesa (32-bit) - this may take 15-30 minutes..."
	meson compile -C builddir -j$(nproc)
}

package() {
	cd "$srcdir/mesa-${_pkgver}"

	echo "==> Installing Mesa (32-bit)..."
	DESTDIR="$pkgdir" meson install -C builddir --no-rebuild

	# Install license
	install -Dm644 docs/license.rst "$pkgdir/usr/share/licenses/$name/LICENSE"

	# Remove files that conflict with 64-bit mesa
	rm -rf "$pkgdir/usr/include"
	rm -rf "$pkgdir/usr/share/drirc.d"
	rm -rf "$pkgdir/usr/share/vulkan"
	rm -rf "$pkgdir/usr/share/glvnd"
	rm -rf "$pkgdir/usr/lib/pkgconfig"
	rm -f "$pkgdir/usr/bin"/*

	echo "==> Mesa ${version} (32-bit) installed with LLVM and AMD RDNA 4 gaming support"
}

files() {
	# Find all installed 32-bit library files
	if [ -d ./usr/lib ]; then
		find ./usr/lib -type f -printf '%p\n'
		find ./usr/lib -type l -printf '%p\n'
	fi

	if [ -d ./usr/share/licenses ]; then
		find ./usr/share/licenses -type f -printf '%p\n'
	fi
}