Re: configure.ac

[Bob Lockie]

On 02/14/03 04:30 Ronald Landheer-Cieslak spoke thusly

> On Fri, 14 Feb 2003, Bob Lockie wrote:
>
> > When I put the following code in I get a warning.
> > ----------------------------------------
> > if test "x$enable_ogglibs" = xyes; then
> >     dnl Libraries required for reading ogg tags, if not found 
> > 'enable_ogglibs' is disabled
> >     AC_CHECK_LIB(ogg, ogg_sync_init, , enable_ogglibs=no)
> >     AC_CHECK_LIB(vorbis, vorbis_comment_init, , enable_ogglibs=no)
> >     AC_CHECK_LIB(vorbisfile, ov_open, , enable_ogglibs=no)
> > fi
> > ----------------------------------------
> > warning: AC_ARG_PROGRAM was called before AC_CANONICAL_TARGET
>
> You need the AC_CANONICAL_TARGET somewhere at the top of your 
> configure.ac: The configure script will need to know whether you're
> cross-compiling in order to know what to do with AC_ARG_PROGRAM

I did that and now I get:
warning: AC_CANONICAL_TARGET invoked multiple times

It would be nice to know which macros depend on which other macros.
I think I have something in the wrong order. :-(


> > I think the code is supposed to check for the existence of the libvorbis 
> > library.
> > What does the "x" mean?
>
> The "x" is just there to make sure that there is something left of the 
> test's operator in case the variable is empty.

Thanks a lot.


> > 1. Can anybody point me to a tutorial on shell programming?
>
> Personally, I think the advanced Bash scripting guide is pretty good. You 
> can find it at: http://www.tldp.org/LDP/abs/html/
> It's a pretty clear guide so if you know how to handle the command-line of 
> your *NIX box, you will probably know enough to start with this. (However, 
> if you come from a Windoze environment, it may be a bit tough.

I'll check it out.


> > I've searched the web but I haven't found a good tutorial on autoconf yet.
>
> Have you tried just reading the manual?

The manual is kindof technical. :-)


> Otherwise, there's also the "Autobook" which is available here: 
> http://sources.redhat.com/autobook/
> It is a bit outdated, though..
>
> Have fun!

It'll be fun, no doubt.
Hopefully not frustrating. :-)
Thanks.

> rlc



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