AC6.19 编译出现错误

发布于 2022-11-29 14:08:51 浏览：1373 订阅该版

**AC6.19编译出错了**

在MDK5 下使用AC5进行编译时，没有问题。但是它太古老了。
在上AC6.19的上一个版本也是没有问题的。前两天升级了下，出错啦。

```
Rebuild started: Project: project
*** Using Compiler 'V6.19', folder: 'C:\Keil_v5\ARM\ARMCLANG\Bin'
Rebuild target 'rt-thread'
compiling syscall_mem.c...
compiling cctype.c...
../../../components/libc/compilers/armlibc/syscalls.c(285): error: conflicting types for '_sys_tmpnam'
int _sys_tmpnam(char *name, int fileno, unsigned maxlength)
    ^
C:\Keil_v5\ARM\ARMCLANG\Bin\..\include\rt_sys.h(137): note: previous declaration is here
extern void _sys_tmpnam(char * /*name*/, int /*sig*/, unsigned /*maxlen*/);
            ^
1 error generated.
```

![screenshot_image.png](https://oss-club.rt-thread.org/uploads/20221129/c287d885d71d197a320696ef39c317b2.png)

这个错误到AC6.19才出现的，所以就针对AC6.19及以上的进行修改就可以了。直接上代码，如下：

![screenshot_image.png](https://oss-club.rt-thread.org/uploads/20221129/9a077b892c6f9a411d6f5f0df0032487.png)

```c
#if (defined(__ARMCC_VERSION) && (__ARMCC_VERSION >= 6190004))
void _sys_tmpnam(char *name, int fileno, unsigned maxlength)
{
    rt_snprintf(name, maxlength, "tem%03d", fileno);
}
#else
int _sys_tmpnam(char *name, int fileno, unsigned maxlength)
{
    rt_snprintf(name, maxlength, "tem%03d", fileno);
    return 1;
}
#endif
```

修改之后，编译就正常啦。