这个错误要怎么办 unknown type name 'clock_t'

[zz@localhost trunk]$ x86_64-w64-mingw32-gcc word2vec.c -o word2vec.exe
word2vec.c:19:10: error: #include expects "FILENAME" or <FILENAME>
 #include pthread.h
          ^
word2vec.c:46:1: error: unknown type name 'clock_t'
 clock_t start;
 ^
word2vec.c: In function 'TrainModelThread':
word2vec.c:368:3: error: unknown type name 'clock_t'
   clock_t now;
   ^
word2vec.c:381:63: error: 'CLOCKS_PER_SEC' undeclared (first use in this function)
          word_count_actual / ((real)(now - start + 1) / (real)CLOCKS_PER_SEC * 1000));
                                                               ^
word2vec.c:381:63: note: each undeclared identifier is reported only once for each function it appears in
word2vec.c: In function 'TrainModel':
word2vec.c:547:3: error: unknown type name 'pthread_t'
   pthread_t *pt = (pthread_t *)malloc(num_threads * sizeof(pthread_t));
   ^
word2vec.c:547:20: error: 'pthread_t' undeclared (first use in this function)
   pthread_t *pt = (pthread_t *)malloc(num_threads * sizeof(pthread_t));
                    ^
word2vec.c:547:31: error: expected expression before ')' token
   pthread_t *pt = (pthread_t *)malloc(num_threads * sizeof(pthread_t));
                               ^
word2vec.c:556:84: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
   for (a = 0; a < num_threads; a++) pthread_create(&pt[a], NULL, TrainModelThread, (void *)a);
                                                                                    ^

[zz@localhost trunk]$ x86_64-w64-mingw32-gcc word2vec.c -o word2vec.exe
word2vec.c:46:1: error: unknown type name 'clock_t'
 clock_t start;
 ^
word2vec.c: In function 'TrainModelThread':
word2vec.c:368:3: error: unknown type name 'clock_t'
   clock_t now;
   ^
word2vec.c:381:63: error: 'CLOCKS_PER_SEC' undeclared (first use in this function)
          word_count_actual / ((real)(now - start + 1) / (real)CLOCKS_PER_SEC * 1000));
                                                               ^
word2vec.c:381:63: note: each undeclared identifier is reported only once for each function it appears in
word2vec.c: In function 'TrainModel':
word2vec.c:556:84: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
   for (a = 0; a < num_threads; a++) pthread_create(&pt[a], NULL, TrainModelThread, (void *)a);
                                                                                    ^

第一次在 centos 下编译 exe。

出现这种错误，不知道怎么办？？

直接 make 出来的，可以运行。但我想要在 win 下的。

谢谢