Vincent Lefevre <vincent+gcc@xxxxxxxxxx> writes: > Hmm, yes, these macros are actually used by MPFR. Note that these > macros are also by Intel's compiler ICC, which tries to emulate > some GCC features, but doesn't behave exactly like GCC. :( This > is a problem for portable code. Unfortunately there is nothing GCC can do to fix that problem. If we introduce __GNUC_THIS_IS_THE_REAL_GCC__ then other compilers will define that as well. > I wonder why GCC has two different prefixes: __GNUC for the versions > and __GCC for some other macros. Historical. Ian
