preprocessor/3951: need for -MF w/ -M breaks backward compat. w/ documented features.

[Neil Booth]

The following reply was made to PR preprocessor/3951; it has been noted by GNATS.

From: Neil Booth <neil@daikokuya.demon.co.uk>
To: cgd@broadcom.com
Cc: gcc-gnats@gcc.gnu.org
Subject: Re: preprocessor/3951: need for -MF w/ -M breaks backward compat. w/ documented features.
Date: Sat, 23 Mar 2002 23:37:44 +0000

 Chris G. Demetriou wrote:-
 
 > I just tested it with the code that tripped over the -MMD problem, and
 > it seems to work fine.  I've also tested it with a bunch of additional
 > code / makefiles, and i noticed nothing additional wrong.
 > dependencies get built right AFAICT, etc.
 > 
 > I can't easily go back and test it on the original problem case, but I
 > don't think that's likely to break again since you now know about it.
 > (You'll recall that doing that ... involved some difficulty and
 > time...  if you'd like I can get the ball rolling on that again.  8-)
 
 I think we're there now.  Thanks for your help.
 
 Neil.