--- a/make/jprt.properties	Thu Apr 07 12:44:23 2016 -0700
+++ b/make/jprt.properties	Fri Apr 08 13:14:23 2016 +0200
@@ -129,9 +129,15 @@
 jprt.build.flavor.optimizedOpen.target=jprt_bundle
 jprt.build.flavor.slowdebug.target=jprt_bundle
 
-# Use these configure args to define debug level
+# Use these configure args to define debug level or provide specific
+# configuration details not covered by Jib profiles.
 jprt.slowdebug.build.configure.args=
 jprt.fastdebug.build.configure.args=--disable-precompiled-headers
+# Don't disable precompiled headers on windows. It's simply too slow.
+jprt.windows_i586.fastdebug.build.configure.args=
+jprt.windows_x64.fastdebug.build.configure.args=
+jprt.windows_i586.fastdebugOpen.build.configure.args=
+jprt.windows_x64.fastdebugOpen.build.configure.args=
 jprt.product.build.configure.args=
 jprt.optimized.build.configure.args=--with-debug-level=optimized
 jprt.slowdebugOpen.build.configure.args=${jprt.slowdebug.build.configure.args}