libgomp failures on powerpc-apple-darwin8

[Jack Howarth]

    Interestingly, while...

gcc-4 pr30703.C -fmessage-length=0 -fopenmp -O0 -L/sw/lib/gcc4.2/lib -lgomp -lstdc++ -lm -m32 -o ./pr30703.exe
/usr/bin/ld: Undefined symbols:
__Unwind_Resume
collect2: ld returned 1 exit status

fails on powerpc-apple-darwin8....

gcc-4 pr30703.C -fmessage-length=0 -fopenmp -O0 -L/sw/lib/gcc4.2/lib -lgomp -lstdc++ -lm -m32 -shared-libgcc  -o ./pr30703.exe

...links fine. On powerpc-apple-darwin8, libgcc.a is missing __Unwind_Resume. I wonder why this doesn't show up
on any other architectures?
               Jack