Re: Can't call AC_PROG_CXX conditionally

[Ralf Corsepius]

Am Mon, 2002-11-18 um 18.37 schrieb Akim Demaille:
>  Andreas> When AC_PROG_CXX is used conditionally then the generated
>  Andreas> configure script complains that conditional "am__fastdepCXX"
>  Andreas> was never defined when AC_PROG_CXX is not actually called.
>  Andreas> In a real-world example this would depend on some --enable
>  Andreas> or --with option.
> 
> Do not do this.  I know it's a pain, but this is really something not
> to do.
> 
> Actually, in the real world, I would suggest AC_CONFIG_SUBDIR'ing the
> part in C++.
Unrealistic, impracticable.

>   Or maybe...
> 
> m4_pushdef([AC_MSG_ERROR])
> AC_PROG_CXX
> m4_popdef([AC_PROG_CXX])
> 
> Something should be done, agreed.

Should? You must be kidding - face it: autoconf is broken to an extend
it is not applicable in real world, anymore.

Ralf