Re: Autoconf and optional arguments for the configure script

[Andre Caldas]

Hello!

Bernd Lachner wrote:
> Hi,
>
> I need some optional arguments for a configure script. I have seen the macros 
> AC_ARG_WITH and AC_ARG_ENABLE in the autoconf manual. As far I can see, I can 
> add arguments like this to the configure script:
>
> --enable-option=yes
> --with-option
--enable-option[=xyz]
--with-option[=xyz]


> But I want more this two types of arguments for the configure script:
>
> 1)
> --device=x where x can be devicea, deviceb, ....

--enable-devicea or --enable-deviceb
or
--enable-devicea_or_b=devicea (Here device_a_or_b is a good 
description for the group. Example --enable-sounddevice=/dev/sound1)


> 2)
> --devicexresoluton=x
> --deviceyresolution=y

--enable-devicexresolution=x


> or even better
>
> --deviceres=x*y

This is up to you. But '*' is spaned by the shell, and your users will 
have to escape it: --deviceres=x\*y.
Probably you want: --devicers=AxB


> where x and y is an integer value. This should lead for example to a #define 
> xres 320 and #define yres 240 in config.h.
>
>
> Is there an easy way to add such kind of arguments to configure.ac? Or ist the 
> only way for arguments  AC_ARG_WITH and AC_ARG_ENABLE?

There are probably lots of ways... but it seems to me that the 
"Autoconf Way [tm]" is using AC_ARG_WITH and AC_ARG_ENABLE.

Andre Caldas.