[Bug target/47269] DSYMUTIL_SPEC doesn't handle -gtoggle
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47269
--- Comment #4 from Jack Howarth 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.
[Bug target/47269] DSYMUTIL_SPEC doesn't handle -gtoggle
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47269
--- Comment #3 from Mike Stump 2011-02-06
01:31:52 UTC ---
If I understand what they intend, though, the documentation isn't clear on this
point:
%{!gtoggle:
%{gdwarf-2:%{!gstabs*:%{!g0: -idsym}}}\
%{.c|.cc|.C|.cpp|.cp|.c++|.cxx|.CPP|.m|.mm: \
%{gdwarf-2:%{!gstabs*:%{!g0: -dsym
}
%(gtoggle:
%{!gdwarf-2:%{!gstabs*:%{!g0: -idsym}}}\
%{.c|.cc|.C|.cpp|.cp|.c++|.cxx|.CPP|.m|.mm: \
%{!gdwarf-2:%{!gstabs*:%{!g0: -dsym
}
that said, I'd have the explain in detail exactly what happens with -g0 and
-gstabs. You'd have to check to {} nesting to make sure I the } at the very
end is right.
[Bug target/47269] DSYMUTIL_SPEC doesn't handle -gtoggle
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47269
--- Comment #2 from Mike Stump 2011-02-06
01:10:06 UTC ---
Luckily specs can do this:
%{!fdump=*:%{!fsyntax-only:foo}}
says to put in foo, if those two flags are not given; this is and.
[Bug target/47269] DSYMUTIL_SPEC doesn't handle -gtoggle
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47269 --- Comment #1 from Jack Howarth 2011-01-13 05:23:00 UTC --- This seems impossible to implement without the addition of a logical AND to the spec language and the ability to place parentheses. We have two cases which have to be tested as true... (!g0 & !gtoggle) | (g0 & gtoggle) in order to properly decided if -dsym should be passed.
