I have a quick update. I was able to find an issue with the way my gcc configuration was using crtstuff.c. After I corrected it I can now successfully link abi_check with a manual command! What configuration or setup file determines automatic linking of libsupc++? I would like to fix it such that no manual intervention is required. Thank you everyone once again for your help. On 2012-03-15, at 4:40 AM, Jonathan Wakely wrote: > On 15 March 2012 03:09, Vaugha Brewchuk wrote: >> >> >> Following your suggestions and looking at the above output, it is obvious that there is no -lsupc++ command passed-on to collect2. I manually added -lsupc++ to the above command and both of the missing symbols have been imported by the linker! I am now one step closer to getting abi_check linked - thank you! >> >> Now the question is why does g++ not try to link with libsupc++.a? I will dig through the configuration, but as always any pointers would be very much appreciated. > > I think usually libstdc++ would automatically link to libsupc++, but > maybe NeXT needs it to be done explicitly.