diff --git a/llvm.spec b/llvm.spec
index 6e055ec..4255d3b 100644
--- a/llvm.spec
+++ b/llvm.spec
@@ -271,6 +271,9 @@ mv %{cmake_srcdir} cmake
 %global optflags %(echo %{optflags} | sed 's/-g /-g1 /')
 %endif
 
+# Copy CFLAGS into ASMFLAGS, so -fcf-protection is used when compiling assembly files.
+export ASMFLAGS=$CFLAGS
+
 # force off shared libs as cmake macros turns it on.
 %cmake	-G Ninja \
 	-DBUILD_SHARED_LIBS:BOOL=OFF \