Re: Why CFLAGS works but not name_CFLAGS sometimes?

[<cs at gnumatica dot com>]

Sander

Thanks for the help.  This will surprise you perhaps...

After a little work I think I found the source of the
problem.  Just the slight different in Autotools between
Red Hat 7.3 and 8.0 I think is the cause of the problem!!!!


"name_CFLAGS = -Wall"

This is IGNORED in Red Hat 7.3 but NOT 8.0!!!

I don't see -Wall's when I do make on 7.3
but I do on 8.0!?!?!?

Chris

 -------- Original Message --------
   Subject: Re: Why CFLAGS works but not name_CFLAGS sometimes?
   From: Sander Niemeijer <niemeijer@science-and-technology.nl>
   Date: Thu, May 8, 2003 7:27 am
   To: <cs@gnumatica.com>


   On dinsdag, mei 6, 2003, at 07:24 Europe/Amsterdam, <cs@gnumatica.com>
    wrote:

   > Is there a reason sometimes name_CFLAGS
   > does not work and you must just do CFLAGS because
   > just CFLAGS by itself works???

   This could be the case if you want to overrule an option in
   name_CFLAGS  that is also in CFLAGS (for instance change the
   optimization setting). Because automake compiles with '$(CC) ...
   $(name_CFLAGS) $(CFLAGS) ...'  an option in name_CFLAGS will be
   overruled by the option in CFLAGS. At  least for gcc (but AFAIK this
   is the same for any compiler/linker) the  last option has the highest
   precedence. The same holds for CPPFLAGS and  LDFLAGS.
   However, there is one exception, which is the '-I' and '-L' options
   (in  that case the first occurance has higher precedence).

   Is this what you meant? Otherwise sent an example of what went wrong
   exactly.

   Regards,
   Sander