Re: AC_CHECK_HEADER question

[Jan van Dijk]

On Sunday 17 Mar 2013 20:39:25 Rhys Ulerich wrote:
> > How can I achieve this with autoconf? I mean: I know how to write a test
> > like
> > 
> > AC_CHECK_HEADER(superlu/slu_util.h, foo, bar),
> > 
> > but how do I obtain (in 'foo') the path relative to which the file
> > superlu/slu_util.h was found?
> 
> Use the optional third and forth arguments. Run the macro several times
> checking for a different prefix each time. Keep track of which one
> succeeds. Fail only if all checks fail.

Dear Rhys,

Thanks a lot for your fast reply. 

That is a bit disappointing, though: it generates a lot of extra work for the 
configure.ac author, only to find out what autoconf already knows: where it 
could find a particular header file. It will also make the scripts less 
robust.

Am I overlooking something? Is there a technical reason why that information 
cannot be.communicated to the user? If not, I suppose I could file a feature 
request.

Thanks again, Jan.