--- a/make/launcher/Launcher-jdk.pack.gmk	Thu Feb 07 10:26:32 2019 +0100
+++ b/make/launcher/Launcher-jdk.pack.gmk	Thu Feb 07 12:35:45 2019 +0100
@@ -45,7 +45,7 @@
   CXXFLAGS_JDKEXE += -fvisibility=hidden
   LDFLAGS_JDKEXE += -Wl,--exclude-libs,ALL
 else ifeq ($(TOOLCHAIN_TYPE), clang)
-  ifneq ($(OPENJDK_TARGET_OS), macosx)
+  ifeq ($(call isTargetOs, macosx), false)
     CXXFLAGS_JDKEXE += -fvisibility=hidden
   endif
 else ifeq ($(TOOLCHAIN_TYPE), solstudio)