Hi, Marko Riedel schrieb:

I installed the GiNaC Debian package on my machine. I now have

||/ Name Version Description +++-==============-==========-============== ii libginac-dev 1.3.0-2 The GiNaC framework (development files)

I get the following warning when I link my test program:

/usr/bin/ld: warning: libstdc++.so.5, \ needed by /usr/bin/../lib/libginac.so, \ may conflict with libstdc++.so.6

The program segfaults in GiNaC::matrix::operator= (). How do I tell the linker to link against libstdc++.so.5 only, thereby avoiding conflicts?

I don't think this is possible.

This is my version of GCC:

gcc -v Using built-in specs. Target: i686-pc-linux-gnu Configured with: ../configure Thread model: posix gcc version 4.0.2

If you use gcc 4.* your programs will link against libstdc++.so.6 (it's part of gcc). Your Debian package seems to be compiled with gcc 3.* and therefore links libstdc++.so.5. Mixing both libstdc++ version doesn't work. So, either you have to compile libginac locally for yourself using gcc 4.*, or you have to use gcc 3.* to compile your program. Regards, Jens