Re: Too many warnings building Emacs with GCC 6 on MSYS2-MinGW64

[Ken Brown]

On 8/31/2016 1:40 PM, Angelo Graziosi wrote:
> $ cat test.c
> #include <stdint.h>
>
> /*extern intptr_t execve (const char *, char * const *, char * const *);*/
> extern intptr_t execve (const char *, char * const [], char * const []);
>
> int main()
> {
>   return 0;
> }
>
> $ gcc test.c
> test.c:4:17: warning: conflicting types for built-in function ‘execve’
>  extern intptr_t execve (const char *, char * const [], char * const []);

According to

  http://pubs.opengroup.org/onlinepubs/9699919799/functions/exec.html
  http://man7.org/linux/man-pages/man2/execve.2.html

you should include <unistd.h>, and the return type should be int.

Ken