Re: [hpux] Fix build problem on hpux

[Daniel Jacobowitz <drow@false.org>]

On Sun, Mar 26, 2006 at 03:55:48PM +0800, Randolph Chung wrote:
> +# When building on HPUX, we need to define _XOPEN_SOURCE_EXTENDED to get
> +# proper prototypes.
> +case $host_os in
> +hpux*)
> +    AH_VERBATIM([_XOPEN_SOURCE_EXTENDED],
> +    [/* Define to 1 if on HPUX.  */
> +#ifndef _XOPEN_SOURCE_EXTENDED
> +# undef _XOPEN_SOURCE_EXTENDED
> +#endif])dnl
> +    AC_DEFINE([_XOPEN_SOURCE_EXTENDED])
> +  ;;
> +esac

I am most confused as to what you are trying to do.  You should leave
_XOPEN_SOURCE_EXTENDED alone on non-HP/UX, and make sure it is
appropriately defined on HP/UX.  #ifndef followed by #undef doesn't
do much.  And I don't think AH_VERBATIM does what you think; it changes
the generated config.in, not the generated config.h, so it affects all
platforms.

-- 
Daniel Jacobowitz
CodeSourcery