.mx.jvmci/mx_jvmci.py

@@ -184,10 +184,11 @@
         srcCerts = join(mx.get_jdk(tag='default').home, 'lib', 'security', 'cacerts')
         if not exists(srcCerts):
             # Might be building with JDK8 which has cacerts under jre/
             srcCerts = join(mx.get_jdk(tag='default').home, 'jre', 'lib', 'security', 'cacerts')
         dstCerts = join(jdkImageDir, 'lib', 'security', 'cacerts')
+        if srcCerts != dstCerts:
         shutil.copyfile(srcCerts, dstCerts)
 
         _create_jdk_bundle(jdkBuildDir, _vm.debugLevel, jdkImageDir)
 
 def _get_jdk_bundle_arches():