1 #include <dlfcn.h> 2 #include <stdio.h> 3 4 int main(int argc, char **argv) { 5 if (argc < 2) { 6 puts("usage: main.out libtest.so"); 7 return 1; 8 } 9 10 void *handle = dlopen(argv[1], RTLD_NOW); 11 if (!handle) { 12 puts("failed to open lib"); 13 return 1; 14 } 15 16 void (*test)(void) = dlsym(handle, "test"); 17 if (!test) { 18 puts("failed to find test() function"); 19 } else { 20 test(); 21 } 22 23 dlclose(handle); 24 return 0; 25 } 26
