static int CompileProgram(Program *prog) {
    int makefile = CheckExists("Makefile");
    int pid;

    if (!(pid = fork())) {
        char **argBlock;

        if (makefile) {
            argBlock = calloc(2, sizeof(char *));
            CHECK_MALLOC(argBlock);
            argBlock[0] = "/usr/bin/make";
            argBlock[1] = prog->executableName;
        } else {
            argBlock = calloc(1 + prog->sourceFiles->length + 2, sizeof(char *));
            CHECK_MALLOC(argBlock);
            argBlock[0] = "/usr/bin/gcc";
            argBlock[1] = "-o";
            argBlock[2] = prog->executableName;
            int i = 3;
            ListNode *argNode;
            Argument *arg = NULL;
            LIST_FOR(prog->sourceFiles, argNode, Argument, arg) {
                argBlock[i++] = arg->value;
            }

            assert(i == 1 + prog->sourceFiles->length + 2);
        }

        printf("%s\n", *argBlock);

        execv(*argBlock, argBlock);
        if (errno == EFAULT) {
            printf("efault\n");
        }
        perror("Failed to exec");
        exit(1);
    } else {
        // Parent
        if (pid == -1) {
            perror("Failed to fork");
            exit(EXIT_SYSCALL);
        }

        int status;
        wait(&status);
        // TODO
    }

    return 1;
}

---
/usr/bin/make
efault
Failed to exec: Bad address
/usr/bin/make
efault
Failed to exec: Bad address