http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56645
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> 2013-03-18 11:20:12 UTC --- I think the issue is that checking for /c/Devel/gcc-cvs.not/build_native/./gcc/xgcc -B/c/Devel/gcc-cvs.not/build_native/./gcc/ -L/c/Devel/gcc-cvs.not/build_native/mingw32/winsup/mingw -L/c/Devel/gcc-cvs.not/build_native/mingw32/winsup/w32api/lib -isystem /c/Devel/gcc-cvs.not/gcc-4.8.0-RC-20130316/winsup/mingw/include -isystem /c/Devel/gcc-cvs.not/gcc-4.8.0-RC-20130316/winsup/w32api/include -B/mingw/local/mingw32/bin/ -B/mingw/local/mingw32/lib/ -isystem /mingw/local/mingw32/include -isystem /mingw/local/mingw32/sys-include option to accept ISO C89... unsupported fails. This likely results in -E and -E -traditional-cpp to fail as well and fallback to /lib/cpp. Figure out why ---- /* end confdefs.h. */ #ifdef __STDC__ # include <limits.h> #else # include <assert.h> #endif Syntax error ---- does not work.