Re: Problem using -R in MAKEFLAGS

[Colm Aengus Murphy]

Hi John,

Looking good :)
I'll go for option 3 as we have a mixed windows/linux environment and I 
want to put as much as possible inside the makefiles.

Thanks for you help.

Colm A

John Graham-Cumming wrote:
> Colm Aengus Murphy wrote:
> > I tried using ".SUFFIXES:".
> > Its a lot better but it still doesn't stop all of the built in rules.
> >
> > For the simple makefile:
> > .SUFFIXES:  %.exe : %.c
> >    gcc -o $(@F) $<
> >
> > I still get:
> >  Considering target file `helloworld.c'.
> >   Looking for an implicit rule for `helloworld.c'.
>
> Right.  .SUFFIXES: only kills off the old-style suffix rules, and not 
> the pattern rules.  Hence there are some (quite a few actually, that 
> are still in effect).  If you want to kill the pattern rules then you 
> have three choices:
>
> 1. Specify -r on the command-line
> 2. Set -r in MAKEFLAGS in the environment before make is run
> 3. Kill them off one by one in the Makefile.
>
> To do #3 for your example, you need to kill off the following:
>
> %.c: %.w %.ch
> %:: RCS/%,v
> %:: RCS/%
> %:: SCCS/s.%
> %:: %,v
> %:: s.%
>
> Just writing those lines above in your Makefile will be enough.  You 
> can use make -p to print out a list of the rules that are in effect if 
> you need to kill others.
>
> John.

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