http://gcc.gnu.org/bugzilla/show_bug.cgi?id=61101
--- Comment #15 from Maxime Boissonneault <maxime.boissonneault at calculquebec dot ca> --- Thanks for the advices. I will try to sort this out tomorrow. The reason we enable all languages and why we build from source is to control all dependencies and are able to provide multiple versions of the compilers. I manage a supercomputer with hundreds of users with various needs. The reason we bootstrap is to remove as many dependencies as possible on the OS-provided packages. We've been bitten in the past with updates of packages (even on CentOS6) that broke user's codes. Obviously, we can screw up too. Thanks again.