Re: how to adjust default CFLAGS="-g -O2"?

[autoconf . z . nuntius]

On Wed, 6 Aug 2008, Eric Blake - address@hidden wrote:
> According to Bruno Haible on 8/6/2008 4:41 PM:
> | But autoconf still hardwires this logic in _AC_PROG_CC_G:
> |
> | ---------------------------------------------
> | elif test $ac_cv_prog_cc_g = yes; then
> |   if test "$GCC" = yes; then
> |     CFLAGS="-g -O2"
> |
> | Could this be made customizable somehow? Either through a variable that the
> | developer could set in his configure.ac before the invocation of 
> AC_PROG_CC,
> | or through a macro which he could redefine in his configure.ac?
>
> Hmm.  This is an interesting request, and seems doable.

I'll put in a modified request.  A few projects break these options out 
into things like
--enable-debug
--enable-warnings
--disable-optimization or --with-optimization=N
etc.

They then try to interpret the compiler found by autoconf to make 
decisions like "GCC uses -g and -Wall"...  These are common end-user 
flags; it would be nice if autoconf provided a standard framework to 
detect and use them.

Thanks,
Daniel