diff --git a/build-llvm.sh b/build-llvm.sh
index d7b29e2..7616a69 100755
--- a/build-llvm.sh
+++ b/build-llvm.sh
@@ -144,6 +144,8 @@ else
     BUILDCMD=make
 fi
 
+CMAKEFLAGS="$LLVM_CMAKEFLAGS"
+
 if [ -n "$HOST" ]; then
     CMAKEFLAGS="$CMAKEFLAGS -DCMAKE_SYSTEM_NAME=Windows"
     CMAKEFLAGS="$CMAKEFLAGS -DCMAKE_CROSSCOMPILING=TRUE"