Re: AC_SUBST for variables with AS_SET_VAR

[Jason Curl]

> Hi Jason,
> 
> * Jason Curl wrote on Thu, Aug 19, 2010 at 09:50:18PM CEST:
> > I'm trying to write a macro that will iterate through a list of
> > libraries looking for a function. If it is found, I wish to do a
> > AC_SUBST on a variable dependent on the name of the library.
> 
> The missing bit is that AC_SUBST wants its first argument to be an
> m4-time literal.  A shell variable doesn't fit the bill.  Likewise
> for AC_DEFINE.  This is because other tools like autoheader and
> automake need to know the variable/define names.
> 
> So, you can either move the AC_SUBST out of the loop and do them in the
> callers of the macro, where you know the literal name of the variable,
> or replace the 'for lxlib' shell loop with an m4 AC_FOREACH loop and
> adjust loop contents.
> 
> Hope that helps.

That helps a lot Ralf. Vielen Dank!

> 
> Cheers,
> Ralf

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