Re: Turn on compiler warnings by default for AC_PROG_CC, AC_PROG_CXX & AC_PROG_FC

On Fri, 11 Apr 2014 08:33:01 -0400, Dale Visser <[email protected]> wrote:
> You found a mistake in the code comments that were brought over with
> this code from Autoconf Archive.

Okay, hope you'll fix that!

> To answer your specific question about GCC, only '-Wall' gets
> used to compile.

Good, that makes way more sense.

I like to also use "-Wextra" when using gcc.
If I understand patch correctly, I could then use:
 AC_APPEND_CFLAG_IFVALID([-Wextra])
It will then add "-Wextra"... but only if the compiler *accepts* that flag.

BTW, I recently got a patch from someone on a project that
force-added "-Wall" to configure.ac. Dale Visser's addition to autoconf is way better,
because it doesn't presume that "all the world is gcc".

--- David A. Wheeler