3307e10fc4
The GNU 4.8 standard library's cstdio header is not aware that C++14 honors C11's removal of "gets" from stdio.h and results in an error: /.../include/c++/4.8/cstdio:120:11: error: no member named 'gets' in the global namespace Detect this problematic case and default to using C++11 instead of C++14 for building CMake itself.