# Maintainer: Celeste <cielesti@protonmail.com>
maintainer="Celeste <cielesti@protonmail.com>"
pkgname=clang-rtlib
pkgver=0.1.0
pkgrel=0
pkgdesc="compiler-rt for non-default Clang"
url="https://compiler-rt.llvm.org/"
arch="all"
license="Apache-2.0"
makedepends="
	clang
	cmake
	linux-headers
	python3
	samurai
	"
_clang_vers="
	16.0.6
	17.0.6
	18.1.8
	19.1.7
	"
for _ver in $_clang_vers; do
	subpackages="$subpackages clang${_ver%%.*}-rtlib"
	source="$source
		https://github.com/llvm/llvm-project/releases/download/llvmorg-$_ver/compiler-rt-$_ver.src.tar.xz
		https://github.com/llvm/llvm-project/releases/download/llvmorg-$_ver/cmake-$_ver.src.tar.xz
		https://github.com/llvm/llvm-project/releases/download/llvmorg-$_ver/llvm-$_ver.src.tar.xz
		"
done
source="$source
	armv6-arch.patch.noauto
	1601-compiler-rt-lsan-dtp-offset.patch
	1602-compiler-rt-ppc-fixes.patch
	1603-fix-msan-with-musl.patch
	1701-compiler-rt-lsan-dtp-offset.patch
	1702-compiler-rt-ppc-fixes.patch
	1703-fix-msan-with-musl.patch
	1801-compiler-rt-lsan-dtp-offset.patch
	1802-compiler-rt-ppc-fixes.patch
	1803-fix-msan-with-musl.patch
	1901-compiler-rt-aarch64-use-getauxval.patch
	1902-compiler-rt-lsan-dtp-offset.patch
	1903-compiler-rt-ppc-fixes.patch
	1904-fix-msan-with-musl.patch
	"
builddir="$srcdir"
options="!check" # first try enabling it for default Clang in main/llvm-runtimes

prepare() {
	default_prepare

	case "$CARCH" in
	armhf)
		msg "armv6-arch.patch.noauto"
		for _ver in $_clang_vers; do
			patch -Np2 -i "$srcdir"/armv6-arch.patch.noauto \
				-d "$builddir"/compiler-rt-$_ver.src
		done
		;;
	esac
}

build() {
	export CFLAGS="$CFLAGS -DNDEBUG -DSANITIZER_CAN_USE_PREINIT_ARRAY=0"
	export CXXFLAGS="$CXXFLAGS -DNDEBUG -DSANITIZER_CAN_USE_PREINIT_ARRAY=0"

	local suffix
	case "$CARCH" in
	x86)		suffix="-i386"		;;
	armv7)		suffix="-armhf"		;;
	ppc64le)	suffix="-powerpc64le"	;;
	*)		suffix="-$CARCH"	;;
	esac

	local builtins=ON sanitizers=ON
	case "$CARCH" in
	arm*|x86)
		sanitizers=OFF
		;;
	s390x)
		builtins=OFF
		sanitizers=OFF
		;;
	esac

	for _ver in $_clang_vers; do
		local llvmver=${_ver%%.*}
		ln -Tsvf cmake-$_ver.src cmake
		ln -Tsvf llvm-$_ver.src llvm

		cmake -B builtins-$_ver -G Ninja -Wno-dev -S compiler-rt-$_ver.src \
			-DCMAKE_BUILD_TYPE=Release \
			-DCMAKE_ASM_COMPILER=clang \
			-DCMAKE_C_COMPILER=clang \
			-DCMAKE_C_COMPILER_TARGET="$CHOST" \
			-DCMAKE_CXX_COMPILER=clang++ \
			\
			-DCOMPILER_RT_BUILD_BUILTINS=ON \
			-DCOMPILER_RT_BUILD_CRT=OFF \
			-DCOMPILER_RT_BUILD_CTX_PROFILE=OFF \
			-DCOMPILER_RT_BUILD_LIBFUZZER=OFF \
			-DCOMPILER_RT_BUILD_MEMPROF=OFF \
			-DCOMPILER_RT_BUILD_ORC=OFF \
			-DCOMPILER_RT_BUILD_PROFILE=OFF \
			-DCOMPILER_RT_BUILD_SANITIZERS=OFF \
			-DCOMPILER_RT_BUILD_XRAY=OFF \
			-DCOMPILER_RT_DEFAULT_TARGET_ONLY=ON \
			-DCOMPILER_RT_INCLUDE_TESTS=OFF
		cmake --build builtins-$_ver

		cmake -B build-$_ver -G Ninja -Wno-dev -S compiler-rt-$_ver.src \
			-DCMAKE_BUILD_TYPE=Release \
			-DCMAKE_ASM_COMPILER=clang \
			-DCMAKE_C_COMPILER=clang \
			-DCMAKE_C_COMPILER_TARGET="$CHOST" \
			-DCMAKE_CXX_COMPILER=clang++ \
			\
			-DCOMPILER_RT_BUILD_GWP_ASAN=OFF \
			-DCOMPILER_RT_BUILD_CTX_PROFILE=$sanitizers \
			-DCOMPILER_RT_BUILD_MEMPROF=$sanitizers \
			-DCOMPILER_RT_BUILD_SANITIZERS=$sanitizers \
			-DCOMPILER_RT_BUILD_XRAY=$sanitizers \
			-DCOMPILER_RT_DEFAULT_TARGET_ONLY=ON \
			-DCOMPILER_RT_ENABLE_WERROR=OFF \
			-DCOMPILER_RT_HAS_WTHREAD_SAFETY_FLAG=OFF \
			-DCOMPILER_RT_INCLUDE_TESTS=OFF \
			-DCOMPILER_RT_INSTALL_PATH=/usr/lib/llvm$llvmver/lib/clang/$llvmver \
			-DCOMPILER_RT_LIBRARY_builtins_$CHOST="$builddir/builtins-$_ver/lib/linux/libclang_rt.builtins$suffix.a" \
			-DCOMPILER_RT_USE_BUILTINS_LIBRARY=$builtins
		cmake --build build-$_ver
	done
}

package() {
	depends="$subpackages"

	local d; for d in build-*; do
		DESTDIR="$pkgdir" cmake --install $d
	done
}

rtlib() {
	local llvmver=${subpkgname%-rtlib}
	llvmver=${llvmver#clang}
	pkgdesc="$pkgdesc $llvmver"

	amove usr/lib/llvm$llvmver/lib/clang/$llvmver
}

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"