Run it under gdb and see why it doesn't find the library. On May 1, 2016 9:13 AM, "Aljosha Papsch" <li...@rpapsch.de> wrote:
> Hi, > > unfortunately it doesn't work without the lib prefix either. I tried quite > a few combinations: > libgneural > libgneural-0.0.0 > gneural > gneural-0.0.0 > gneural-0 > > From distant memory I recalled that ldconfig needs to be executed to avoid > LD_LIBRARY_PATH. So I created a conf file for ldconfig at > /etc/ld.so.conf.d/gneuralnetwork.conf (I'm on Parabola): > /opt/gneural/lib > > But I'm out of luck. Do you have any other hints? > > On 01.05.2016 16:05, Robert Boehne wrote: > > The string you pass to Lt_dlopen should not contain the "lib" prefix. > On May 1, 2016 7:12 AM, "Aljosha Papsch" <li...@rpapsch.de> wrote: > >> Hello, >> >> I librarified gneural_network, patches pending at: >> https://lists.gnu.org/archive/html/gneuralnetwork/2016-04/msg00015.html >> In that patch library is called libgneural_network, locally I modified >> name to libgneural. >> >> Next I installed gneural_network at /opt: >> >> /opt/gneural/ >> ├── bin >> │ └── gneural_network >> ├── include >> │ └── gneural >> │ ├── activation.h >> │ ├── binom.h >> │ ├── defines.h >> │ ├── error.h >> │ ├── fact.h >> │ ├── feedforward.h >> │ ├── genetic_algorithm.h >> │ ├── gradient_descent.h >> │ ├── includes.h >> │ ├── load.h >> │ ├── msmco.h >> │ ├── parser.h >> │ ├── randomize.h >> │ ├── random_search.h >> │ ├── rnd.h >> │ ├── save.h >> │ ├── simulated_annealing.h >> │ └── structures.h >> └── lib >> ├── libgneural.a >> ├── libgneural.la >> ├── libgneural.so -> libgneural.so.0.0.0 >> ├── libgneural.so.0 -> libgneural.so.0.0.0 >> └── libgneural.so.0.0.0 >> >> I try to load that library with lt_dlopen: >> >> #include <ltdl.h> >> #include <stdio.h> >> >> int >> main (int argc, char** argv) >> { >> lt_dlhandle handle; >> lt_dlinit (); >> handle = lt_dlopen ("libgneural"); >> if (handle != NULL) >> { >> printf ("Loaded library\n"); >> lt_dlclose (handle); >> } >> else >> { >> printf (lt_dlerror ()); >> printf ("\n"); >> } >> return 0; >> } >> >> This program fails with error message: file not found. What am I doing >> wrong? The command line is: >> $ gcc -l ltdl -o dlopen dlopen.c >> $ LD_LIBRARY_PATH=/opt/gneural/lib ./dlopen >> >> Best regards >> Aljosha Papsch >> >> _______________________________________________ >> https://lists.gnu.org/mailman/listinfo/libtool >> > >
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