openjdk7 build failed because genstubs 9.1R3

Hello everyone, I just installed 9.1R3 onto one machine and I was trying to build openjdk7 and I got an error indicating that it failed because genstubs failed. Not knowing what does genstubs does I'm completely lost here. I know 9.1R3 is not final and may have bugs but maybe is something else. Any ideas?
 
Ports have nothing to do with the version of FreeBSD. Please post the full error.
 
this is the only thing I could get:

Code:
-create-import-jdk-stubs:
[genstubs] Genrating 81 stub files to /usr/ports/java/openjdk7/work/openjdk7/build/bsd-amd64/langtools/build/genstubs

BUILD FAILED
/usr/ports/java/openjdk7/work/openjdk7/work/openjdk/langtools/make/build.xml:665: genstubs failed

Totl time: 4 seconds
gmake[2]: *** [build] Error 1
gmake[2]: Leaving Directory '/usr/ports/java/openjdk7/work/openjdk7/work/openjdk/langtools/make/'

gmkae[1]: [langtooks-build] Error 2
gmkae[1]: Leaving Directory '/usr/ports/java/openjdk7/work/openjdk7/work/openjdk/'
gmake: *** [build_product_image] Error: 2
*** [do_build] Error code 1

Stop in /usr/ports/java/openjdk7.
*** [install] Error code 1


Stop in /usr/ports/java/openjdk7.
 
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