diff --git a/Makefile b/Makefile
index 402e401c..967fb65c 100644
--- a/Makefile
+++ b/Makefile
@@ -93,7 +93,7 @@ VERSION_EXT =
 
 BIN_EXT =
 
-IS_APPLE := $(shell $(CC) -dM -E - < /dev/null | grep __apple_build_version__ | wc -l | tr -d " ")
+IS_APPLE := $(shell $(CC) -dM -E - < /dev/null | grep -cm 1 -e __apple_build_version__ -e __APPLE_CC__)
 ifeq ($(IS_APPLE),1)
 EXT = dylib
 VERSION_EXT = $(API_MAJOR).$(EXT)