“错误：在编译64位时，在pthread.h上的'{'标记'之前的预期标识符或'''

Question

我之前发现有关此错误消息的问题，但它们与我的情况不符，这是方案：

环境：Windows 8.1和CodeBlocks，每个=> How do I compile for 64bit using G++ w/ CodeBlocks?配置64位GCC

问题：测试=> https://www.geeksforgeeks.org/multithreading-c-2/中列出的基本多线程，简单程序，如下所示：

#include <stdio.h>
#include <stdlib.h>
#include <pthread.h>

// A normal C function that is executed as a thread 
// when its name is specified in pthread_create()
void *myThreadFun(void *vargp)
{
    sleep(1);
    printf("Printing GeeksQuiz from Thread \n");
    return NULL;
}

int main()
{
    pthread_t tid;
    printf("Before Thread\n");
    pthread_create(&tid, NULL, myThreadFun, NULL);
    pthread_join(tid, NULL);
    printf("After Thread\n");
    exit(0);
}

在标准的32位编译它完成并且完美无缺，但是当使用MinGW-64（How do I compile for 64bit using G++ w/ CodeBlocks?）进行编译时，它在pthread.h上失败并出现4个错误：

pthread.h|418|error: expected identifier or '(' before '{' token|
pthread.h|428|error: expected identifier or '(' before '{' token|
pthread.h|438|error: expected identifier or '(' before '{' token|
pthread.h|447|error: expected identifier or '(' before '{' token|

不言而喻，pthread.h没有以任何方式被修改或改变。错误指向四个#define行：

/* Recursive API emulation.  */
#undef localtime_r
#define localtime_r(_Time, _Tm) ({ struct tm *___tmp_tm;        \
                        pthread_testcancel();   \
                        ___tmp_tm = localtime((_Time));\
                        if (___tmp_tm) {    \
                          *(_Tm) = *___tmp_tm;  \
                          ___tmp_tm = (_Tm);    \
                        }           \
                        ___tmp_tm;  })

#undef gmtime_r
#define gmtime_r(_Time,_Tm) ({ struct tm *___tmp_tm;        \
                        pthread_testcancel();   \
                        ___tmp_tm = gmtime((_Time)); \
                        if (___tmp_tm) {    \
                          *(_Tm) = *___tmp_tm;  \
                          ___tmp_tm = (_Tm);    \
                        }           \
                        ___tmp_tm;  })

#undef ctime_r
#define ctime_r(_Time,_Str) ({ char *___tmp_tm;         \
                        pthread_testcancel();   \
                        ___tmp_tm = ctime((_Time));  \
                        if (___tmp_tm)      \
                         ___tmp_tm =        \
                           strcpy((_Str),___tmp_tm); \
                        ___tmp_tm;  })

#undef asctime_r
#define asctime_r(_Tm, _Buf)    ({ char *___tmp_tm;         \
                        pthread_testcancel();   \
                        ___tmp_tm = asctime((_Tm)); \
                        if (___tmp_tm)      \
                         ___tmp_tm =        \
                           strcpy((_Buf),___tmp_tm);\
                        ___tmp_tm;  })

其他程序编译并正确运行64位，在运行时显示进程的详细信息。我不明白相同的未修改头文件如何仅在编译64位时显示错误。构建日志显示：

-------------- Build: Debug in MultiThreadGCCx64 (compiler: GNU GCC Compiler x64)---------------

x86_64-w64-mingw32-gcc.exe -Wall -g -std=c99 -m64 -I"C:\Program Files (x86)\CodeBlocks\MinGW" -c Z:\CTemp\CProjects\MultiThreadGCCx64\main.c -o obj\Debug\main.o
In file included from Z:\CTemp\CProjects\MultiThreadGCCx64\main.c:11:0:
Z:\CTemp\CProjects\MultiThreadGCCx64\pthread.h:418:34: error: expected identifier or '(' before '{' token
 #define localtime_r(_Time, _Tm) ({ struct tm *___tmp_tm;  \
                                  ^
Z:\CTemp\CProjects\MultiThreadGCCx64\pthread.h:428:30: error: expected identifier or '(' before '{' token
 #define gmtime_r(_Time,_Tm) ({ struct tm *___tmp_tm;  \
                              ^
Z:\CTemp\CProjects\MultiThreadGCCx64\pthread.h:438:30: error: expected identifier or '(' before '{' token
 #define ctime_r(_Time,_Str) ({ char *___tmp_tm;   \
                              ^
Z:\CTemp\CProjects\MultiThreadGCCx64\pthread.h:447:31: error: expected identifier or '(' before '{' token
 #define asctime_r(_Tm, _Buf) ({ char *___tmp_tm;   \
                               ^
Z:\CTemp\CProjects\MultiThreadGCCx64\main.c: In function 'myThreadFun':
Z:\CTemp\CProjects\MultiThreadGCCx64\main.c:19:5: warning: implicit declaration of function 'sleep'; did you mean '_sleep'? [-Wimplicit-function-declaration]
     sleep(1);
     ^~~~~
     _sleep
Process terminated with status 1 (0 minute(s), 0 second(s))
4 error(s), 1 warning(s) (0 minute(s), 0 second(s))

我承认我只是这些领域的初学者（多线程，64位程序），如果我要求的对于专家来说是非常明显的，那么道歉，但经过相当长的时间研究这个，我在以前的帖子中找不到任何帮助而且我被困住了。

非常感谢您提供的任何帮助。

Answer 1

使用64位MinGW的pthread.h而不是复制或以其他方式使用32位MinGW（pthread.h）的like you were apparently doing。

像这样的低级头文件特定于编译器，包括编译器版本和配置。