Michael Dehmlow <dehmlowm@xxxxxxxxx> writes: > Hello I'm relatively new to gcc development and I'm having trouble with > different versions of libstdc++.so being used at runtime. Basically I'm > creating an api which is used by a third party application (labview) which > uses libstdc++.so.5 my api needs to be compiled with libstdc++.so.6. As you've discovered, it generally does not work to mix versions of libstdc++.so. > This issue is detailed in the following gcc bug: > http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21405 > The resolution appears to be detailed in > http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24660 > > As far as I can tell (PLEASE tell me if I'm mistaken) I need to recompile > either my gcc compiler (version 4.1.2) or the stdlibc++.so.6 with the > --enable-symvers=gnu-versioned-namespaces flag then recompile my application > with the new compiler/ stdc++ library. That seems worth trying but I don't know whether it will work. > So my question is how do I do this? Do I need to recompile just my stdc++ > library or my entire gcc compiler is this documented some where. You need to rebuild the whole compiler. http://gcc.gnu.org/install/ . Pass the --enable-symvers option to the top level configure script. Your other option is to use an older version of gcc which uses libstdc++.so.5. Ian
