hce wrote: > I thought, if I can force compiler in FC9 to use old version of > GLIBCXX_3.4.8, the problem should be resolved. Please advice. No, that's not possible. Symbol versioning works in one direction only: code linked against an older version of a library will work with a newer version of the library found at runtime. But not the reverse. So the solution is straightforward: link your code with the oldest version of libstdc++ that you wish to support. The same concept will apply to glibc as well. In practice this means that your build machine needs to have the lowest common denominator of gcc and glibc versions that you intend to support. Brian
