Re: flag question

[Bob Friesenhahn]

On Fri, 25 Apr 2008, NightStrike wrote:

> On 4/25/08, Peter O'Gorman <address@hidden> wrote:
> > NightStrike wrote:
> > > -Wall and -pedantic... AM_CFLAGS or AM_CPPFLAGS?
> >
> > Neither. Neither are portable, so the do not belong in the Makefile.am,
> > check for gcc in configure and append them to CFLAGS if they work.
>
> I didn't know they weren't portable.  Our project requires gcc as a
> precondition, but I see your point.  Is there a configure test to see
> if -Wall works?

These options only work with GCC.  If the compiler is GCC you can use 
them, otherwise skip them.

As long as you arrange to generate the argument to AM_CFLAGS using a 
configure substitution, you can put arguments there, but if you do it 
way, there is no assurance that they will work unless they were used 
as part of the configure script testing.

Bob
======================================
Bob Friesenhahn
address@hidden, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/