--- a/make/lib/Lib-jdk.attach.gmk Thu Feb 07 10:26:32 2019 +0100
+++ b/make/lib/Lib-jdk.attach.gmk Thu Feb 07 12:35:45 2019 +0100
@@ -27,7 +27,7 @@
################################################################################
-ifeq ($(OPENJDK_TARGET_OS), windows)
+ifeq ($(call isTargetOs, windows), true)
# In (at least) VS2013 and later, -DPSAPI_VERSION=1 is needed to generate
# a binary that is compatible with windows versions older than 7/2008R2.
# See MSDN documentation for GetProcessMemoryInfo for more information.