Re: egcs-2.93.10 19990228: cc1 built with --enable-c-cpplib doesn't handle -MD

[Raja R Harinath <harinath at cs dot umn dot edu>]

Dave Brolley <brolley@cygnus.com> writes:
> Raja R Harinath wrote:
> > Hi,
> >
> > A `cc1' binary built with --enable-c-cpplib doesn't handle the `-MD file'
> > option.  This feature is used by `automake', and breaks virtually
> > every package using automake.
> >
> > >From what I could figure out, the -M options are missing from
> > documented_lang_options in toplev.c.  A simple fix appears to be just
> > to add
> 
> I tried it with the latest source and found that it works fine for
> me. I did some digging and found that it's because the -M* options
> are added via java/lang-options.h. 

Ah.  That makes sense.  I use

        --enable-languages="c,c++,f77,objc"

So, my "options.h" is 

        #include "cp/lang-options.h"
        #include "f/lang-options.h"

Notably missing is java/lang-options.h.

> I'm wondering if they should be moved into toplev.c?

They probably should.  However, if the java compiler has intrinsic
support for -M* rather than through the pre-processor, I guess that
fact will have to be documented somewhere. (I think it currently is
documented by being in java/lang-options.h.) 

- Hari
-- 
Raja R Harinath ------------------------------ harinath@cs.umn.edu
"When all else fails, read the instructions."      -- Cahn's Axiom
"Our policy is, when in doubt, do the right thing."   -- Roy L Ash