Simon Josefsson wrote:
> +# gl_MANYWARN_ALL_GCC(VARIABLE)
> +# -----------------------------
> +# Add all documented GCC (currently as per version 4.3.2) warning
> +# parameters to variable VARIABLE. Note that you need to test them
> +# using gl_WARN_ADD if you want to make sure your gcc understands it.
> +AC_DEFUN([gl_MANYWARN_ALL_GCC],
Recent gcc versions have improved the --help interface so that you can
specify --help=warnings, --help=optimizers, and so on. You could
potentially autogenerate this list with
COLUMNS=999 gcc --help=warnings | awk 'NR>1 {print $1}'
But only if gcc is new enough (4.3+).
Also, while on the topic of warning control, you might be interested in
-fdiagnostics-show-option which is available in 4.1+ and causes gcc to
augment each diagnostic message with the name of the -W option that
controls that message (at least for those that have a corresponding
option.)
Brian
