[LAD] ladspa: dlopen failed for tap ladspa plugins

[Devin Anderson]

On Sat, May 17, 2014 at 10:07 PM, Zlobin Nikita <cook60020tmp at mail.ru> wrote:

> 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;
> }

If you want to find out why the dlopen() call is *actually* failing,
use dlerror():

#include <stdio.h>
#include <stdlib.h>

#include <dlfcn.h>

int
main(int argc, char **argv)
{
    if (argc != 2) {
        fprintf(stderr, "Usage: %s plugin-path\n", argv[0]);
        exit(EXIT_FAILURE);
    }
    void *handle = dlopen(argv[1], RTLD_NOW | RTLD_LOCAL);
    if (handle == NULL) {
        fprintf(stderr, "%s: %s: %s\n", argv[0], argv[1], dlerror());
        exit(EXIT_FAILURE);
    }
    dlclose(handle);
    return EXIT_SUCCESS;
}

-- 
Devin Anderson
surfacepatterns (at) gmail (dot) com

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