http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47269
--- Comment #4 from Jack Howarth <howarth at nitro dot med.uc.edu> 2011-02-06
02:15:08 UTC ---
Mike,
I thought it was pretty clear in the man page...
-gtoggle
Turn off generation of debug info, if leaving out this option would
have generated it, or turn it on at level 2 otherwise. The
position of this argument in the command line does not matter, it
takes effect after all other options are processed, and it does so
only once, no matter how many times it is given. This is mainly
intended to be used with -fcompare-debug.
It inverts whatever the final status of debug code generation was. I think this
is why
you see it handled in toplev.c...
if (flag_gtoggle)
{
if (debug_info_level == DINFO_LEVEL_NONE)
{
debug_info_level = DINFO_LEVEL_NORMAL;
if (write_symbols == NO_DEBUG)
write_symbols = PREFERRED_DEBUGGING_TYPE;
}
else
debug_info_level = DINFO_LEVEL_NONE;
}
rather than in opts.c.
