This seems to be an old problem, while we fix it on OS X, it is still broken for FreeBSD and likely other BSD platforms.

Understood that FreeBSD is not a supported platform, but we should not break the build in OpenJDK.

Error message is like following,

Compiling /home/henryjen/ws/lambda/hotspot/src/share/vm/gc_implementation/shared
/gcTraceSend.cpp
/home/henryjen/ws/lambda/hotspot/src/share/vm/gc_implementation/shared/gcTraceSe
nd.cpp: In member function 'void YoungGCTracer::send_promotion_failed_event(cons
t PromotionFailedInfo&) const':
/home/henryjen/ws/lambda/hotspot/src/share/vm/gc_implementation/shared/gcTraceSe
nd.cpp:112: error: invalid conversion from 'pthread*' to 'u4'
/home/henryjen/ws/lambda/hotspot/src/share/vm/gc_implementation/shared/gcTraceSe
nd.cpp:112: error: initializing argument 1 of 'void EventPromotionFailed::set_
thread(u4)'
gmake[6]: *** [gcTraceSend.o] Error 1
gmake[5]: *** [the_vm] Error 2
gmake[4]: *** [product] Error 2
gmake[3]: *** [generic_build2] Error 2
gmake[2]: *** [product] Error 2
gmake[1]: *** [/home/henryjen/ws/lambda/build/bsd-x86_64-normal-server-release/h
otspot/_hotspot.timestamp] Error 2