This may be common knowledge to some, but it was new to me. Libraries that use C++11 and are compiled with GCC 4.8.x that CentOS 7.x has are NOT binary compatible with GCC 5.x or newer. It seems to only effect C++11. What you have to do - create /opt/gcc55 (or whatever) Rebuild any libraries that use C++11 that you need in something compiled with GCC 5+ and install them within that prefix. Then point to them in that prefix when building what you need to build. -=- The Linux runtime linker seems to get it right (as long as you have /opt/gcc55/lib64 in path) and not load wrong version of library, so you don't need to use rpath. But you do need to have a version of the dependency compiled with the GCC you want available at both compile time and runtime. -=- I ran across this issue when building Audacity 2.2.2 - which does not build with GCC 4.8.5. The problem libraries: * flac * vamp-sjdk-plugin * wxGTK3 All three of those use C++11 and therefore needed to be rebuilt with GCC 5.5.0 (what I used for building Audacity) Just thought I'd pass it along.