In my code I call dlerror to print the error. What is printed? And can you send me the strace log so I have a look at what's going on? On 05/18/2014 11:15 AM, Zlobin Nikita wrote: > I don't see any changes. In my code following check fails: > if (pvPluginHandle) > Shortly - dlopen returns NULL, so futher struggle is useless. > >> try that: >> >> #include <stdio.h> >> #include <dlfcn.h> >> int main (int argc, char ** argv) >> { >> >> //LADSPAPluginSearch(describePluginLibrary); >> char plugpath [] = "/usr/lib/ladspa/tap_echo.so"; >> void * pvPluginHandle = dlopen(plugpath, RTLD_NOW | RTLD_LOCAL); >> if (pvPluginHandle) dlclose (pvPluginHandle); >> else printf ("dlopen failed: %s (dlerror: %s)\n", >> >> plugpath, dlerror()); >> >> printf("dlerror? %s\n", dlerror()); >> >> return 0; >> >> } >> >> compile with: >> gcc -Wall bug.c -ldl -o bug >> >> then run: >> ./bug >> >> what happens? >> If it fails, can you run: >> strace ./bug 2>&1 > strace.log >> and send me the strace.log file. >> >> and also tell me what "gcc --version" says, >> and what "uname -a" says. >> >> Thanks. >> >> On 05/18/2014 07:07 AM, Zlobin Nikita wrote: >>> Fons: i tried with existing path. >>> Library path is valid - i checked it with ls (doing it for ladspa dir >>> before to get libraries list). >>> >>> Code - includes are omited, line with main() declaration is numbered >>> >>> 30: int main (int argc, char ** argv) >>> { >>> >>> //LADSPAPluginSearch(describePluginLibrary); >>> char plugpath [] = "/usr/lib/ladspa/tap_echo.so"; >>> void * pvPluginHandle = dlopen(plugpath, RTLD_NOW | RTLD_LOCAL); >>> if (pvPluginHandle) dlclose (pvPluginHandle); >>> else printf ("dlopen failed: %s\n", plugpath); >>> return 0; >>> >>> } >>> >>> hermann: thanks, will look >>> >>>> On 05/17/2014 10:15 PM, Zlobin Nikita wrote: >>>>> Backtrace of scanning crash (gdb output) is in attachement (too long >>>>> lines >>>>> in email message are automatically wrapped - don't know, is it good to >>>>> violate this). >>>> >>>> You should provide some code, it's hard to help you without seeing what >>>> your program really does. >>> >>> _______________________________________________ >>> Linux-audio-dev mailing list >>> Linux-audio-dev(a)lists.linuxaudio.org >>> http://lists.linuxaudio.org/listinfo/linux-audio-dev