http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54692
--- Comment #2 from Markus Trippelsdorf <markus at trippelsdorf dot de> 2012-09-24 14:07:06 UTC --- (In reply to comment #1) > ISTR it worked for me when checking in -Og support with > BOOT_CFLAGS/BOOT_CXXFLAGS="-Og -g". I don't have a host compiler with -Og > support around, but I wonder how -Og can make a difference for preprocessing? > Is it some configure tests giving different results? Yes (from gcc/config.log): configure:5224: checking for ANSI C header files configure:5244: gcc -c -g g conftest.c >&5 gcc: error: g: No such file or directory and many more similar ones.
