--- a/.hgtags-top-repo	Fri May 16 07:16:18 2014 -0700
+++ b/.hgtags-top-repo	Fri May 23 10:48:42 2014 -0700
@@ -256,3 +256,4 @@
 ab55a18a95e1990a588929d5d29db3eb9985fea0 jdk9-b11
 59f6350295f9681fe5956d8bc889bf341914c6cb jdk9-b12
 5800456add07e1a68170a229fb5e27376f8875e5 jdk9-b13
+4e3aa9723e9972623e3dafc321b368e7db7e9b3b jdk9-b14

--- a/make/Jprt.gmk	Fri May 16 07:16:18 2014 -0700
+++ b/make/Jprt.gmk	Fri May 23 10:48:42 2014 -0700
@@ -23,8 +23,22 @@
 # questions.
 #
 
-# This file is contains targets utilities needed by JPRT.
+# This file contains targets and utilities needed by JPRT.
 
+# Cygpath is only defined when running on Cygwin
+ifneq ($(CYGPATH), )
+  # If we get JPRT_ARCHIVE_*BUNDLE externally, make sure they have /cygdrive
+  # style paths
+  ifdef JPRT_ARCHIVE_BUNDLE
+    override JPRT_ARCHIVE_BUNDLE := $(shell $(CYGPATH) -u $(JPRT_ARCHIVE_BUNDLE))
+  endif
+  ifdef JPRT_ARCHIVE_INSTALL_BUNDLE
+    override JPRT_ARCHIVE_INSTALL_BUNDLE := $(shell $(CYGPATH) -u $(JPRT_ARCHIVE_INSTALL_BUNDLE))
+  endif
+endif
+
+# When running in JPRT these will be provided. Need defaults so that this makefile
+# is valid anyway.
 ifndef JPRT_ARCHIVE_BUNDLE
   JPRT_ARCHIVE_BUNDLE=/tmp/jprt_bundles/j2sdk-image.zip
 endif