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1 2#include <stdio.h>3#include <stdlib.h>4 5#ifdef DLOPEN_FUNC_DIR6#include <dlfcn.h>7#else8void func(int K);9void func2(int K);10#endif11 12int main(int argc, char *argv[]) {13#ifdef DLOPEN_FUNC_DIR14  dlerror();15  void *f1_handle = dlopen(DLOPEN_FUNC_DIR"/func.shared", DLOPEN_FLAGS);16  if (f1_handle == NULL) {17    fprintf(stderr, "unable to open '" DLOPEN_FUNC_DIR "/func.shared': %s\n",18            dlerror());19    return EXIT_FAILURE;20  }21 22  void (*func)(int) = (void (*)(int))dlsym(f1_handle, "func");23  if (func == NULL) {24    fprintf(stderr, "unable to lookup symbol 'func': %s\n", dlerror());25    return EXIT_FAILURE;26  }27 28  void *f2_handle = dlopen(DLOPEN_FUNC_DIR"/func2.shared", DLOPEN_FLAGS);29  if (f2_handle == NULL) {30    fprintf(stderr, "unable to open '" DLOPEN_FUNC_DIR "/func2.shared': %s\n",31            dlerror());32    return EXIT_FAILURE;33  }34 35  void (*func2)(int) = (void (*)(int))dlsym(f2_handle, "func2");36  if (func2 == NULL) {37    fprintf(stderr, "unable to lookup symbol 'func2': %s\n", dlerror());38    return EXIT_FAILURE;39  }40#endif41 42  func(1);43  func2(0);44 45  return EXIT_SUCCESS;46}47 48