Re: [autoconf] Re: pkg-config wisdom

[Bob Friesenhahn]

On Fri, 23 Oct 2009, William Pursell wrote:

> > Configure scripts which trust pkg-config include and library paths and
> > simpy concatenate them together (often in some random order) cause big
> > problems for users since the user has no control over the paths used.
>
> I don't understand the comment about "random order".  The ordering
> is as imposed by the author of configure.ac.   @FOO_LIBS@ @BAR_LIBS@
> leads to -L/foo -L/bar, while @BAR_LIBS@ @FOO_LIBS@ leads
> to -L/bar -L/foo.

It is true that within one configure script the order is not random 
but different configure script authors may concatenate the package 
information in different orders.  The requirements for packages may 
overlap so the same -L options and -I options may appear multiple 
times.

Bob
--
Bob Friesenhahn
address@hidden, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/