Geoff, I should clarify my last comments. After looking at this some more it appears that abort occurs unless I link in libgcc_s.10.4. That is both...
"/sw/lib/gcc4/libexec/gcc/powerpc-apple-darwin8/4.2.0/collect2" "-dynamic" "-arch" "ppc" "-weak_reference_mismatches" "non-weak" "-o" "xplor" "-lcrt1.o" "/sw/lib/gcc4/lib/gcc/powerpc-apple-darwin8/4.2.0/crt2.o" "-L." "-L/Users/howarth/Desktop/xplor-nih-2.14/bin.Darwin_8/" "-L/System/Library/Frameworks/Python.framework/Versions/2.3/lib/python2.3/config" "-L/Users/howarth/Desktop/xplor-nih-2.14/bin.Darwin_8/" "-L/sw/lib/gcc4/lib/gcc/powerpc-apple-darwin8/4.2.0" "-L/sw/lib/gcc4/lib/gcc/powerpc-apple-darwin8/4.2.0/../../.." "xplor.o" "-lxplorCmd" "-lxplor" "-lfft" "-lintVar" "-lvmd" "-lpy" "-lswigpy-xplor" "-ltclXplor" "-lswigtcl8-xplor" "-lnmrPot" "-lcommon" "-lmarvin" "-lpython2.3" "-ldl" "-lcrypto" "-lgcc" "-lSystemStubs" "-lSystem" ...and... "/sw/lib/gcc4/libexec/gcc/powerpc-apple-darwin8/4.2.0/collect2" "-dynamic" "-arch" "ppc" "-macosx_version_min" "10.3" "-multiply_defined" "suppress" "-weak_reference_mismatches" "non-weak" "-o" "xplor" "-lcrt1.o" "/sw/lib/gcc4/lib/gcc/powerpc-apple-darwin8/4.2.0/crt2.o" "/sw/lib/gcc4/lib/gcc/powerpc-apple-darwin8/4.2.0/crt3.o" "-L." "-L/Users/howarth/Desktop/xplor-nih-2.14/bin.Darwin_8/" "-L/System/Library/Frameworks/Python.framework/Versions/2.3/lib/python2.3/config" "-L/Users/howarth/Desktop/xplor-nih-2.14/bin.Darwin_8/" "-L/sw/lib/gcc4/lib/gcc/powerpc-apple-darwin8/4.2.0" "-L/sw/lib/gcc4/lib/gcc/powerpc-apple-darwin8/4.2.0/../../.." "xplor.o" "-lxplorCmd" "-lxplor" "-lfft" "-lintVar" "-lvmd" "-lpy" "-lswigpy-xplor" "-ltclXplor" "-lswigtcl8-xplor" "-lnmrPot" "-lcommon" "-lmarvin" "-lpython2.3" "-ldl" "-lcrypto" "-lgcc" "-lSystemStubs" "-lSystem" ...exhibit the abort on the c++ throw. However the first form works if I substitute "-lgcc_s.10.4" for "-lgcc" in that link line. Also I have verified that the static libgcc linked in is the one from gcc 4.2 and not the one from the system libraries. Jack