Can't compile openjdk6 b16

[ArtemGr]

cc1plus: warnings being treated as errors
/usr/ports/java/openjdk6/work/hotspot/src/share/vm/ci/ciMethodBlocks.cpp:332: 
warning: deprecated conversion from string constant to 'char*'
/usr/ports/java/openjdk6/work/hotspot/src/share/vm/ci/ciMethodBlocks.cpp:332: 
warning: deprecated conversion from string constant to 'char*'
/usr/ports/java/openjdk6/work/hotspot/src/share/vm/ci/ciMethodBlocks.cpp:332: 
warning: deprecated conversion from string constant to 'char*'
/usr/ports/java/openjdk6/work/hotspot/src/share/vm/ci/ciMethodBlocks.cpp:332: 
warning: deprecated conversion from string constant to 'char*'
/usr/ports/java/openjdk6/work/hotspot/src/share/vm/ci/ciMethodBlocks.cpp:332: 
warning: deprecated conversion from string constant to 'char*'
/usr/ports/java/openjdk6/work/hotspot/src/share/vm/ci/ciMethodBlocks.cpp:332: 
warning: deprecated conversion from string constant to 'char*'
/usr/ports/java/openjdk6/work/hotspot/src/share/vm/ci/ciMethodBlocks.cpp:332: 
warning: deprecated conversion from string constant to 'char*'
gmake[7]: *** [ciMethodBlocks.o] Error 1
gmake[7]: *** Waiting for unfinished jobs....
gmake[7]: Leaving directory 
`/usr/ports/java/openjdk6/work/build/bsd-amd64-debug/hotspot/outputdir/bsd_amd64_compiler2/jvmg'
gmake[6]: *** [the_vm] Error 2
gmake[6]: Leaving directory 
`/usr/ports/java/openjdk6/work/build/bsd-amd64-debug/hotspot/outputdir/bsd_amd64_compiler2/jvmg'
gmake[5]: *** [jvmg] Error 2
gmake[5]: Leaving directory 
`/usr/ports/java/openjdk6/work/build/bsd-amd64-debug/hotspot/outputdir'
gmake[4]: *** [generic_build2] Error 2
gmake[4]: Leaving directory `/usr/ports/java/openjdk6/work/hotspot/make'
gmake[3]: *** [jvmg] Error 2
gmake[3]: Leaving directory `/usr/ports/java/openjdk6/work/hotspot/make'
gmake[2]: *** [hotspot-build] Error 2
gmake[2]: Leaving directory `/usr/ports/java/openjdk6/work'
gmake[1]: *** [generic_debug_build] Error 2
gmake[1]: Leaving directory `/usr/ports/java/openjdk6/work'
gmake: *** [debug_build] Error 2
*** Error code 1