Created attachment 394600 [details, diff] Fix default arguments for compatibility with C++ standard games-action/brainparty-0.61 does not compile with gcc-4.9. The reason is that the C++ source code specifies a default argument in the instatiation of a template function which is not allowed. Current gcc versions (at least gcc-4.9, maybe also earlier versions - I did not test) do not allow this deviation from the C++ standard. I attach a patch which specifies the default argument in the template instead of its instation. This fixes compilation with gcc-4.9, and since it follows the C++ standard, the patch should not cause any issues with earlier versions of gcc.
in portage. thanks for the bug report and patch.