On 30 November 2013 01:28, Alec Teal wrote: > The error is: > > ./A.out: /usr/lib/x86_64-linux-gnu/libstdc++.so.6: version `CXXABI_1.3.8' > not found (required by ./A.out) It means the version of libstdc++.so.6 being found by the dynamic linker at run-time is older than the version of libstdc++.so.6 that was used at link-time. That usually happens because you use a new version of GCC to compile and link, but do not tell the dynamic linker how to find the libraries from the new GCC. See http://gcc.gnu.org/onlinedocs/libstdc++/faq.html#faq.how_to_set_paths and the section of the manual it links to.