Re: Plan: Wednesday

[Robert Collins]

On 22 Aug 2001 16:41:09 +0200, Akim Demaille wrote:
> This is what I would advise.  It *has* to be done by Sh, M4 cannot.
> 
> # 2.13 compatibility
> ifndef([m4_wrap],
> [define([m4_wrap], [defn([m4wrap])])])
> 
> AC_DEFUN([AM_CONDITIONAL],
> [ifelse([$1], [TRUE],
>         [errprint(__file__:__line__: [$0: invalid condition: $1
> ])dnl
> m4exit(1)])dnl
> ifelse([$1], [FALSE],
>        [errprint(__file__:__line__: [$0: invalid condition: $1
> ])dnl
> m4exit(1)])dnl
> AC_SUBST([$1_TRUE], ['#'])
> AC_SUBST([$1_FALSE], ['#'])
> if $2; then
>   $1_TRUE=
>   $1_FALSE='#'
> else
>   $1_TRUE='#'
>   $1_FALSE=
> fi
> 
> m4_wrap([test "${$1_TRUE}${$1_FALSE}" = '#' ||
>   AC_MSG_ERROR([yeeeks: the condition $1 was not properly set!])
> ])
> ])
> 
> AC_INIT
> AM_CONDITIONAL([FOO], [true])
> if false; then
>   AM_CONDITIONAL([BAR], [true])
> fi


Cool... expect for 1 last bug. with ac 2.13 AC_MSG_ERROR doesn't seem to
be defined :].

Rob