Remove private prototype for 'execve' and its uses in MinGW build

* src/sysdep.c (emacs_exec_file): Don't compile this function
anymore on WINDOWSNT, since it is not used there.  This function
was the only reason for having 'execve' prototype in ms-w32.h.

* nt/inc/ms-w32.h (execve): Remove prototype and the MinGW64 vs
ming.org mess that it causes.

1 files changed, 0 insertions, 11 deletions

diff --git a/nt/inc/ms-w32.h b/nt/inc/ms-w32.h
index cbe35ea1053..4cbae16dc5a 100644
--- a/nt/inc/ms-w32.h
+++ b/nt/inc/ms-w32.h
@@ -300,17 +300,6 @@ extern int sys_umask (int);
 #define execvp    _execvp
 #include <stdint.h>             /* for intptr_t */
 extern intptr_t _execvp (const char *, char **);
-#ifdef MINGW_W64
-/* GCC 6 has a builtin execve with the prototype shown below.  MinGW64
-   changed the prototype in its process.h to match that, although the
-   library function still calls _execve, which still returns intptr_t.
-   However, using the prototype with intptr_t causes GCC to emit
-   warnings.  Fortunately, execve is not used in the MinGW build, but
-   the code that references it is still compiled.  */
-extern int execve (const char *, char * const *, char * const *);
-#else
-extern intptr_t execve (const char *, char * const *, char * const *);
-#endif
 #define tcdrain _commit
 #define fdopen    _fdopen
 #define fsync     _commit