In particular mach5 system, jtreg headful tests are failing with error

Failed to load library. error (null)

The failure is emanating from
http://hg.openjdk.java.net/lanai/lanai/file/eaea7745cf54/src/java.desktop/macosx/native/libawt_lwawt/java2d/metal/MTLContext.m#l119.
which seems to suggest that java is not able to find metal shaders library generated during compile time.