Re: lt_dlerror 'file not found' bug

[Bob Friesenhahn]

On Sun, 13 Dec 2009, Matěj Týč wrote:
> What I have thought of is stopping any attempt to open any new module
> filename if the previous attempt has failed for another reason that
> because the file wasn't there. Do you think this is a good assumption?

The problem is that libltdl supports several different types of 
loaders and every available type of loader is used.  So (as you say) 
the last loader used is the one which produces the final error.  The 
first loader type which is always used is the preloader, which tries 
to load a static implementation from a library and a library which 
uses shared modules will usually fail the preloader.  The preloader 
likely also pretends that the "file is not there" if there is no 
preloadable module.

The bug you are encountering was reported at least two years ago.  It 
is still awaiting a good idea for how to fix it.

There needs to be some notion of error priority so that the error with 
the most priority gets saved.

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