[Vm-dev] problem building latest cog.v3 on linux

[djm1329 at san.rr.com]

Trying to build the latest squeak.cog.v3 on Ubuntu 12.04 (gcc 4.6.3), I encountered the following problems:

1. Due to the compile flag -Werror in platforms/Cross/unix/vm-display-fbdev/Makefile.in, vm-display-fbdev does not compile. Removing -Werror allows the build to complete.

gcc -m32 -g -O2 -DNDEBUG -DDEBUGVM=0 -msse2 -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -DCOGMTVM=0 -DLSB_FIRST=1 -g -O2 -DNDEBUG -DDEBUGVM=0 -msse2 -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -DCOGMTVM=0 -DLSB_FIRST=1 -Wall -Werror -Wno-unknown-pragmas -DHAVE_CONFIG_H -I/home/dmcphers/Cog/build.linux32x86/squeak.cog.v3/build -I/home/dmcphers/Cog/build.linux32x86/squeak.cog.v3/build -I/home/dmcphers/Cog/platforms/unix/vm -I/home/dmcphers/Cog/platforms/Cross/vm -I/home/dmcphers/Cog/src/vm -I/home/dmcphers/Cog/build.linux32x86/squeak.cog.v3/build -I/home/dmcphers/Cog/build.linux32x86/squeak.cog.v3/build -I/home/dmcphers/Cog/platforms/unix/vm -I/home/dmcphers/Cog/platforms/Cross/vm -I/home/dmcphers/Cog/src/vm -I/home/dmcphers/Cog/platforms/Cross/plugins/FilePlugin -I/home/dmcphers/Cog/platforms/Cross/plugins/B3DAcceleratorPlugin -I/home/dmcphers/Cog/platforms/unix/plugins/B3DAcceleratorPlugin -c /home/dmcphers/Cog/platforms/unix/vm-display-fbdev/sqUnixFBDev.c  -fPIC -DPIC -DPIC -o sqUnixFBDev.o
In file included from /home/dmcphers/Cog/platforms/Cross/vm/sq.h:20:0,
                 from /home/dmcphers/Cog/platforms/unix/vm-display-fbdev/sqUnixFBDev.c:43:
/home/dmcphers/Cog/platforms/Cross/vm/sqVirtualMachine.h:297:0: error: "DisownVMLockOutFullGC" redefined [-Werror]
/home/dmcphers/Cog/src/vm/interp.h:38:0: note: this is the location of the previous definition
cc1: all warnings being treated as errors
make[1]: *** [sqUnixFBDev.lo] Error 1
make: *** [vm-display-fbdev.la] Error 2

2. The regular VM coglinuxht fails to run (it just hangs), however the debug vm seems to run ok. May be due to compiler optimization level?

Thanks,
Doug