diff --git a/sys-devel/llvm/llvm-3.5.2.ebuild b/sys-devel/llvm/llvm-3.5.2.ebuild
index 8a8c32c9f7805..f6bb2c37914c8 100644
--- a/sys-devel/llvm/llvm-3.5.2.ebuild
+++ b/sys-devel/llvm/llvm-3.5.2.ebuild
@@ -165,6 +165,9 @@ src_prepare() {
 			projects/compiler-rt/make/platform/clang_*.mk || die
 	fi
 
+	# disable use of SDK on OSX, bug #568758
+	sed -i -e 's/xcrun/false/' utils/lit/lit/util.py || die
+
 	local sub_files=(
 		Makefile.config.in
 		Makefile.rules
diff --git a/sys-devel/llvm/llvm-3.6.2.ebuild b/sys-devel/llvm/llvm-3.6.2.ebuild
index 2e7bc9ad9b174..21f4f9df756d5 100644
--- a/sys-devel/llvm/llvm-3.6.2.ebuild
+++ b/sys-devel/llvm/llvm-3.6.2.ebuild
@@ -172,6 +172,9 @@ src_prepare() {
 			projects/compiler-rt/make/platform/clang_*.mk || die
 	fi
 
+	# disable use of SDK on OSX, bug #568758
+	sed -i -e 's/xcrun/false/' utils/lit/lit/util.py || die
+
 	local sub_files=(
 		Makefile.config.in
 		Makefile.rules
diff --git a/sys-devel/llvm/llvm-3.7.1.ebuild b/sys-devel/llvm/llvm-3.7.1.ebuild
index d41de0686b95b..fa15adf29fa7a 100644
--- a/sys-devel/llvm/llvm-3.7.1.ebuild
+++ b/sys-devel/llvm/llvm-3.7.1.ebuild
@@ -173,6 +173,9 @@ src_prepare() {
 	# Fix msan with newer kernels, #569894
 	epatch "${FILESDIR}"/llvm-3.7-msan-fix.patch
 
+	# disable use of SDK on OSX, bug #568758
+	sed -i -e 's/xcrun/false/' utils/lit/lit/util.py || die
+
 	if use clang; then
 		# Automatically select active system GCC's libraries, bugs #406163 and #417913
 		epatch "${FILESDIR}"/clang-3.5-gentoo-runtime-gcc-detection-v3.patch
diff --git a/sys-devel/llvm/llvm-9999.ebuild b/sys-devel/llvm/llvm-9999.ebuild
index bf4286783fd36..582064971ca6c 100644
--- a/sys-devel/llvm/llvm-9999.ebuild
+++ b/sys-devel/llvm/llvm-9999.ebuild
@@ -174,6 +174,9 @@ src_prepare() {
 	# https://bugs.gentoo.org/show_bug.cgi?id=565358
 	epatch "${FILESDIR}"/llvm-3.8-llvm-config.patch
 
+	# disable use of SDK on OSX, bug #568758
+	sed -i -e 's/xcrun/false/' utils/lit/lit/util.py || die
+
 	if use clang; then
 		# Automatically select active system GCC's libraries, bugs #406163 and #417913
 		epatch "${FILESDIR}"/clang-3.5-gentoo-runtime-gcc-detection-v3.patch