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

[Eric Blake]

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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 think it would
be reasonable to see this in the user's configure.ac, just prior to
AC_PROG_CC:

AC_PROG_GCC_DEFAULT_FLAGS([-O2 -g -Wall])

at which point, that string becomes the first set of CFLAGS tried for the
compiler (if $CFLAGS is undefined), before falling back on "-g -O2" if it
didn't work.

Anyone care to contribute a patch, even if only to add a line in the TODO
file pointing to this thread?

- --
Don't work too hard, make some time for fun as well!

Eric Blake             address@hidden
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