This should have nothing to do with your drivers, since the code is being generated by hlslcc. A few more questions: why do you preload libGL and what happens if you don’t? Do you have a conflicting libmcpp installed in your system that might be getting loaded before one from Engine/Binaries/Linux? (Changing LD_LIBRARY_PATH may help with that).
You can disable compiling through SCW and just use the engine itself. Set bAllowCompilingThroughWorkers to false and see whether you can get further.