Re: [Q] Script-wide default value

[Ralf Wildenhues]

Hi Zaufi,

* address@hidden wrote on Thu, Nov 17, 2005 at 10:59:35PM CET:
> 
> I'm trying to write some macro with ability to change its default behaviour 
> via redefine 'global' variable. My acinclude.m4 contain my macro definition 
> like this:
> 
> AC_DEFUN([AX_MEGA],
>   [m4_ifdef([AC_DEFAULT_MEGA_ARG], [AC_DEFAULT_MEGA_ARG], [default value])])
                ^

> dnl Redefine default value hardcoded in macro
> m4_define([AS_DEFAULT_MEGA_ARG], [from configure script])
              ^

Note also the former can be written shorter as

AC_DEFUN([AX_MEGA],
  [m4_default([AC_DEFAULT_MEGA_ARG], [default value])])

Cheers,
Ralf