jdk15/jdk16 build problems on amd64, 7.2-RELEASE

[Todd Wasson]

I've recently been unable to get jdk15 and jdk16 to build, with some  
very cryptic errors (if any, really) being reported.  I've pasted a  
build log for jdk16 here, since it's about 9100 lines long: http://paste2.org/p/224897

This seems to be the relevant portion:
cd bsd_amd64_compiler2/product && gmake -w
gmake[4]: Entering directory `/usr/ports/java/jdk16/work/control/build/ 
bsd-amd64/hotspot/outputdir/bsd_amd64_compiler2/product'
Note: Some input files use unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
gmake[4]: *** [../generated/MakeDeps.class] Killed: 9
gmake[4]: *** Deleting file `../generated/MakeDeps.class'
gmake[4]: Leaving directory `/usr/ports/java/jdk16/work/control/build/ 
bsd-amd64/hotspot/outputdir/bsd_amd64_compiler2/product'
gmake[3]: *** [product] Error 2
gmake[3]: Leaving directory `/usr/ports/java/jdk16/work/control/build/ 
bsd-amd64/hotspot/outputdir'
gmake[2]: *** [generic_build2] Error 2
gmake[2]: Leaving directory `/usr/ports/java/jdk16/work/hotspot/make'
gmake[1]: *** [product] Error 2
gmake[1]: Leaving directory `/usr/ports/java/jdk16/work/hotspot/make'
gmake: *** [hotspot-build] Error 2
*** Error code 2

Stop in /usr/ports/java/jdk16.
*** Error code 1

Stop in /usr/ports/java/jdk16.


I don't see anything about this in the PRs or The Google, so any help  
would be appreciated.  I'm not sure how to do the -Xlint thing it  
suggests, so I haven't tried that yet, but I can do so if someone  
tells me what I need to tweak to pull it off.

Thanks!


Todd