[Freeciv-Dev] Re: warnings when compiling with NDEBUG (PR#1216)

[Raimar Falke <hawk@xxxxxxxxxxxxxxxxxxxxxxx>]

On Sat, Feb 02, 2002 at 03:07:20PM -0500, Jason Short wrote:
> Raimar Falke wrote:
> 
> > On Wed, Jan 09, 2002 at 03:04:17PM -0800, jdorje@xxxxxxxxxxxxxxxxxxxxx 
> > wrote:
> 
> > Why these changes? I would understand:
> > 
> > "#ifndef NDEBUG" but not "#ifdef DEBUG".
> 
> I'm not really knowledgeable about autoconf, but what is the difference 
> between these two?  Doesn't NDEBUG <=> !DEBUG ?  Or are there three 
> choices: NDEBUG, <nothing>, and DEBUG?

This has to do nothing with autoconf per se but with the freeciv's
configure.in:

if test "x$enable_debug" = "xyes"; then
  test "$cflags_set" = set || CFLAGS="$CFLAGS -g"
  CPPFLAGS="$CPPFLAGS -DDEBUG"
else
  if test "x$enable_debug" = "xno"; then
    CPPFLAGS="$CPPFLAGS -DNDEBUG"
  fi
fi

So yes there can be NDEBUG, <nothing> (the default) and DEBUG.

        Raimar

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