--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lib/compiler-rt/compiler-rt.sh	Thu Mar 28 20:58:49 2019 +0100
@@ -0,0 +1,65 @@
+#!/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=compiler-rt
+PKGVERSION=8.0.0
+PKGREVISION=1
+PKGLICENSE="MIT CUSTOM"
+PKGSUMMARY="compiler-rt runtime libraries"
+PKGDOWNLOAD="http://releases.llvm.org/$PKGVERSION/$PKGNAME-$PKGVERSION.src.tar.xz"
+
+: ${CC:=clang}
+: ${CFLAGS:=-O2}
+: ${CXX:=clang++}
+: ${CXXFLAGS:=-O2}
+
+build()
+{
+	rm -rf $PKGNAME-$PKGVERSION.src
+	tar xvaf $PKGNAME-$PKGVERSION.src.tar.xz
+	pushd $PKGNAME-$PKGVERSION.src
+
+	# LLVM 9.0.0: remove this patch and the links created below.
+	patch -p1 < ../D28791.diff
+	mkdir build && pushd build
+	cmake .. \
+		-DCMAKE_BUILD_TYPE=Release \
+		-DCMAKE_CXX_COMPILER="$CXX" \
+		-DCMAKE_CXX_FLAGS="$CXXFLAGS" \
+		-DCMAKE_C_COMPILER="$CC" \
+		-DCMAKE_C_FLAGS="$CFLAGS" \
+		-DCMAKE_INSTALL_PREFIX=/usr/lib/clang/$PKGVERSION \
+		-DCOMPILER_RT_BUILD_BUILTINS=On \
+		-DCOMPILER_RT_BUILD_SANITIZERS=Off \
+		-DCOMPILER_RT_BUILD_XRAY=Off \
+		-DCOMPILER_RT_USE_BUILTINS_LIBRARY=On
+	make
+	make install DESTDIR=$DESTDIR
+	# LLVM 9.0.0: remove the following temporary links.
+	ln -sf clang_rt.crtbegin_shared-$(uname -m).o \
+		$DESTDIR/usr/lib/clang/$PKGVERSION/lib/linux/crtbeginS.o
+	ln -sf clang_rt.crtend_shared-$(uname -m).o \
+		$DESTDIR/usr/lib/clang/$PKGVERSION/lib/linux/crtendS.o
+	ln -sf clang_rt.crtbegin-$(uname -m).o \
+		$DESTDIR/usr/lib/clang/$PKGVERSION/lib/linux/crtbeginT.o
+	ln -sf clang_rt.crtend-$(uname -m).o \
+		$DESTDIR/usr/lib/clang/$PKGVERSION/lib/linux/crtend.o
+	popd
+
+	popd
+	rm -rf $PKGNAME-$PKGVERSION.src
+}