Whenever I try to link some code with my ppc-amigaos-g++ cross compiler (compiled using adtools sources on SourceForge) I get lots of undefined references like these:

$ ppc-amigaos-g++ -use-dynld -O2 -Wall -Werror -o test test.cpp
/usr/local/amiga/lib/gcc/ppc-amigaos/4.2.4/../../../../ppc-amigaos/lib/libstdc++.so: undefined reference to `_Unwind_SjLj_Unregister'
/usr/local/amiga/lib/gcc/ppc-amigaos/4.2.4/../../../../ppc-amigaos/lib/libstdc++.so: undefined reference to `_Unwind_SjLj_RaiseException'
/usr/local/amiga/lib/gcc/ppc-amigaos/4.2.4/../../../../ppc-amigaos/lib/libstdc++.so: undefined reference to `_Unwind_SjLj_Resume_or_Rethrow'
/usr/local/amiga/lib/gcc/ppc-amigaos/4.2.4/../../../../ppc-amigaos/lib/libstdc++.so: undefined reference to `_Unwind_GetLanguageSpecificData'
/usr/local/amiga/lib/gcc/ppc-amigaos/4.2.4/../../../../ppc-amigaos/lib/libstdc++.so: undefined reference to `_Unwind_SjLj_Resume'
/usr/local/amiga/lib/gcc/ppc-amigaos/4.2.4/../../../../ppc-amigaos/lib/libstdc++.so: undefined reference to `_Unwind_DeleteException'
/usr/local/amiga/lib/gcc/ppc-amigaos/4.2.4/../../../../ppc-amigaos/lib/libstdc++.so: undefined reference to `_Unwind_GetTextRelBase'
/usr/local/amiga/lib/gcc/ppc-amigaos/4.2.4/../../../../ppc-amigaos/lib/libstdc++.so: undefined reference to `_Unwind_SetIP'
/usr/local/amiga/lib/gcc/ppc-amigaos/4.2.4/../../../../ppc-amigaos/lib/libstdc++.so: undefined reference to `_Unwind_GetDataRelBase'
/usr/local/amiga/lib/gcc/ppc-amigaos/4.2.4/../../../../ppc-amigaos/lib/libstdc++.so: undefined reference to `_Unwind_GetRegionStart'
/usr/local/amiga/lib/gcc/ppc-amigaos/4.2.4/../../../../ppc-amigaos/lib/libstdc++.so: undefined reference to `_Unwind_SetGR'
/usr/local/amiga/lib/gcc/ppc-amigaos/4.2.4/../../../../ppc-amigaos/lib/libstdc++.so: undefined reference to `_Unwind_GetIPInfo'
/usr/local/amiga/lib/gcc/ppc-amigaos/4.2.4/../../../../ppc-amigaos/lib/libstdc++.so: undefined reference to `_Unwind_SjLj_Register'
collect2: ld returned 1 exit status

This happens even with an empty program like this:

int main (void) {
	return 0;
}

FWIW I can get it link without the undefined references by adding the "-shared" option to the link command but then when I try to run the program in question it returns without ever reaching the main() function.

For now I've solved this by doing the linking step using native g++ but this is somewhat annoying.