http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53343
--- Comment #4 from Mikael Pettersson <mikpe at it dot uu.se> 2012-05-27 21:05:27 UTC --- (In reply to comment #3) > >--disable-build-poststage1-with-cxx > > Is there a reason why you are using this option? Yes, 1. It's a valid option, and it doesn't disable any functionality in the final compiler. 2. Bootstrapping in C++ mode has been reported to increase bootstrap time, I don't have any numbers, but this was mentioned last year around the time the default was changed. As I bootstrap more or less continuously on fairly underpowered boxes (arm, m68k, even my dual-cpu sparc64 SunBlade2500 is too slow compared to my x86 boxes), I don't want to spend cycles (and generate heat) on something that is of no value to me. 3. The C++ FE has repeatedly failed to warn on some forms of code that the C FE does warn about, allowing dodgy (for a C-centric definition of dodgy) code to enter the gcc code base. Bootstrapping in C mode ensures that such regressions are detected.
