mono-2.0.1 build spinning on 6.x

[John Hein]

When I build mono-2.0.1_6 on 6.x, it spins during the build here...

===>  Building for mono-2.0.1_6
 .
 .
 .
gmake[3]: Entering directory `/usr/local/ports/lang/mono/work/mono-2.0.1/mcs'
gmake profile-do--default--all profile-do--net_2_0--all profile-do--net_3_5--all profile-do--net_2_1--all
gmake[4]: Entering directory `/usr/local/ports/lang/mono/work/mono-2.0.1/mcs'
gmake PROFILE=basic all
gmake[5]: Entering directory `/usr/local/ports/lang/mono/work/mono-2.0.1/mcs'
gmake[6]: *** [build/deps/basic-profile-check.exe] Error 1
gmake[6]: Entering directory `/usr/local/ports/lang/mono/work/mono-2.0.1/mcs'
*** The compiler 'false' doesn't appear to be usable.
*** Trying the 'monolite' directory.
gmake[7]: Entering directory `/usr/local/ports/lang/mono/work/mono-2.0.1/mcs'


ps shows this:

USER      PID  PPID   SID NI %CPU %MEM   VSZ   RSS  TT  WCHAN  STAT STARTED      TIME COMMAND
jhein   76352 76351  9294 19 24.2  0.5 30524  9632  pb  -      RN    8:12AM  15:12.28 /usr/local/ports/lang/mono/work/mono-2.0.1/mono/mini/mono --config /usr/local/ports/lang/mono/work/mono-2.0.1/runtime/etc/mono/config ./class/lib/monolite/mcs.exe /out:build/deps/basic-profile-check.exe build/deps/basic-profile-check.cs


This is after restarting, but after first letting it run overnight
'TIME' was up to 846:15.37.


ktrace shows this over and over...

 76352 mono     PSIG  SIGSEGV caught handler=0x341dcac8 mask=0xfffefaff code=0xc
 76352 mono     PSIG  SIGSEGV caught handler=0x341dcac8 mask=0xfffefaff code=0xc
 76352 mono     PSIG  SIGSEGV caught handler=0x341dcac8 mask=0xfffefaff code=0xc
 76352 mono     PSIG  SIGSEGV caught handler=0x341dcac8 mask=0xfffefaff code=0xc
 76352 mono     PSIG  SIGSEGV caught handler=0x341dcac8 mask=0xfffefaff code=0xc
 76352 mono     PSIG  SIGSEGV caught handler=0x341dcac8 mask=0xfffefaff code=0xc