--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dev/clang/clang.sh	Wed Oct 27 11:32:16 2021 +0200
@@ -0,0 +1,84 @@
+#!/bin/sh
+#
+# Copyright (c) 2019 David Demelier <markand@malikania.fr>
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+#
+
+PKGNAME=clang
+PKGVERSION=9.0.0
+PKGREVISION=1
+PKGLICENSE="MIT CUSTOM"
+PKGSUMMARY="C language family frontend for LLVM"
+PKGDOWNLOAD="http://releases.llvm.org/$PKGVERSION/cfe-$PKGVERSION.src.tar.xz
+             http://releases.llvm.org/$PKGVERSION/clang-tools-extra-$PKGVERSION.src.tar.xz"
+PKGDEPENDS="cmake:build"
+PKGOPTIONS="COMPILER_RT LIBCXX LLD TOOLS"
+
+: ${CC:=clang}
+: ${CFLAGS:=-O2}
+: ${CXX:=clang++}
+: ${CXXFLAGS:=-O2}
+: ${COMPILER_RT:=yes}
+: ${LIBCXX:=yes}
+: ${LLD:=yes}
+: ${TOOLS:=yes}
+
+if [ "$COMPILER_RT" = "yes" ]; then
+	with_compiler_rt="-DCLANG_DEFAULT_RTLIB=compiler-rt"
+fi
+
+if [ "$LIBCXX" = "yes" ]; then
+	with_libcxx="-DCLANG_DEFAULT_CXX_STDLIB=libc++"
+else
+	with_libcxx="-DCLANG_DEFAULT_CXX_STDLIB=libstdc++"
+fi
+
+if [ "$LLD" = "yes" ]; then
+	with_lld="-DCLANG_DEFAULT_LINKER=lld"
+fi
+
+build()
+{
+	rm -rf cfe-$PKGVERSION.src
+	tar xvf cfe-$PKGVERSION.src.tar.xz
+	cd cfe-$PKGVERSION.src
+
+	# Extract clang-extra-tools as tools/extra if requested.
+	if [ "$TOOLS" = "yes" ]; then
+		tar xvf ../clang-tools-extra-$PKGVERSION.src.tar.xz -C tools
+		mv tools/clang-tools-extra-$PKGVERSION.src tools/extra
+	fi
+
+	mkdir build && cd build
+	cmake .. -Wno-dev \
+		-DCMAKE_BUILD_TYPE=Release \
+		-DCMAKE_CXX_COMPILER="$CXX" \
+		-DCMAKE_CXX_FLAGS="$CXXFLAGS" \
+		-DCMAKE_C_COMPILER="$CC" \
+		-DCMAKE_C_FLAGS="$CFLAGS" \
+		-DCMAKE_INSTALL_PREFIX= \
+		-DCMAKE_INSTALL_MANDIR=/share/man \
+		-DCLANG_VENDOR="Vanilla Linux" \
+		-DLLVM_ENABLE_EH=On \
+		-DLLVM_ENABLE_RTTI=On \
+		$with_compiler_rt \
+		$with_libcxx \
+		$with_lld
+	make
+	make DESTDIR=$DESTDIR install
+	cd ..
+
+	cd ..
+	rm -rf cfe-$PKGVERSION.src
+}