diff --git a/toolchain/gcc/common.mk b/toolchain/gcc/common.mk
index f7390c159e..e2dfcea6cb 100644
--- a/toolchain/gcc/common.mk
+++ b/toolchain/gcc/common.mk
@@ -85,7 +85,7 @@ endif
 
 GCC_CONFIGURE:= \
 	SHELL="$(BASH)" \
-	$(if $(shell gcc --version 2>&1 | grep LLVM), \
+	$(if $(shell gcc --version 2>&1 | grep -E "Apple.(LLVM|clang)"), \
 		CFLAGS="-O2 -fbracket-depth=512 -pipe" \
 		CXXFLAGS="-O2 -fbracket-depth=512 -pipe" \
 	) \