Due to a change in toolchain-funcs.eclass, gcc-version now queries the active compiler instead of the active GCC. This causes a failure with CC="clang" as clang reports itself as GCC 4.2. Please see the tracker bug for more information.
Created attachment 440372 [details, diff] only check gcc when cc is gcc This fixes the issue. After this, there are later clang issues that deserves its own bug.
@masterzorag, could you please ack the attached patch? It's already sat for two weeks, but I just noticed you weren't CC'ed, so I'll hold off for a while longer :)
Should be fixed as we sed away the gcc version check.