make/lib/Lib-jdk.attach.gmk

@@ -25,11 +25,11 @@
 
 include LibCommon.gmk
 
 ################################################################################
 
-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.
   LIBATTACH_CFLAGS := -DPSAPI_VERSION=1
 endif