Hello Roberto, * Roberto Rigamonti wrote on Thu, Mar 06, 2008 at 04:23:31PM CET: > Hi, I've already posted a related question on > http://www.linuxquestions.org/ today, but it seems that nobody there is > Libtool-expert so I've decided to crosspost here. > I've put a detailed explanation of my problem here: > http://www.linuxquestions.org/questions/programming-9/c-dynamically-loaded-libraries-and-automake-invalid-elf-library-error-626105/ > By the way, the situation is the following: using Autotools and Libtool > I created a source tree for a project composed of a main program and a > set of libraries that must be loaded at runtime by the program > (plugins). Before starting real coding, I decided to write down a test > program, because I'm not accustomed with Autotools and I had always used > the traditional hand-compiling and linking against .so libraries. > Now, as explained thoroughly in the page linked above, I'm faced with a > .la library that seems to be requested by my main program, but when I > provide it, the program refuses it because it is a Libtool archive and > not a ELF file.
If you use dlopen directly, then you should continue to load .so modules directly. Loading of libtool modules (.la files created with -module) works when you use libltdl and its lt_dlopen function. libltdl is documented here: <http://www.gnu.org/software/libtool/manual/html_node/Using-libltdl.html> If you want to see a small example package that uses libltdl, besides what's in the manual, look in the source tree of Libtool in the tests/mdemo directory (Libtool version 2.2) resp. the mdemo directory (version 1.5.x). Note that its Makefile.am file is much more complicated than it would need to be just for a demo, because mdemo is also used for some tests. > I'm close to getting insane, it's about 10 hours I'm > trying to get out of this, and I read a huge number of docs/tutorials on > the web without result. Don't get insane by working 10 hours without progress. Ask after a couple of hours. ;-) > I've put the whole source tree on the web > http://digilander.libero.it/optikstorm/3DVisor-0.0.1.tar.bz2 (~250Kb), > hoping that this helps. If the above advice does not help you get further, please ask more specific questions; I might look into the package then. Cheers, Ralf _______________________________________________ http://lists.gnu.org/mailman/listinfo/libtool
