ld/testsuite/ld-elf/dl1main.c

   1 #include <stdio.h>
   2 #include <dlfcn.h>
   3
   4 int bar = -20;
   5
   6 int
   7 main (void)
   8 {
   9   int ret = 0;
  10   void *handle;
  11   void (*fcn) (void);
  12
  13   handle = dlopen("./tmpdir/libdl1.so", RTLD_GLOBAL|RTLD_LAZY);
  14   if (!handle)
  15     {
  16       printf("dlopen libfoo.so: %s\n", dlerror ());
  17       return 1;
  18     }
  19
  20   fcn = (void (*)(void)) dlsym(handle, "foo");
  21   if (!fcn)
  22     {
  23       printf("dlsym foo: %s\n", dlerror ());
  24       ret += 1;
  25     }
  26   else
  27     {
  28       (*fcn) ();
  29     }
  30
  31   dlclose (handle);
  32   return ret;
  33 }