From: Angelo Graziosi <angelo.graziosi@alice.it>
To: Eli Zaretskii <eliz@gnu.org>, Ken Brown <kbrown@cornell.edu>
Cc: emacs-devel@gnu.org
Subject: Re: Too many warnings building Emacs with GCC 6 on MSYS2-MinGW64
Date: Wed, 31 Aug 2016 21:56:45 +0200 [thread overview]
Message-ID: <11ac6b41-3a59-ec19-c414-151c08a91ba3@alice.it> (raw)
In-Reply-To: <8337lklqrl.fsf@gnu.org>
Il 31/08/2016 20:47, Eli Zaretskii ha scritto:
>> Cc: emacs-devel@gnu.org
>> From: Ken Brown <kbrown@cornell.edu>
>> Date: Wed, 31 Aug 2016 14:11:41 -0400
>>
>> 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.
>
> Thanks. On MS-Windows, execve is not declared in unistd.h, it's
> declared in process.h (which we cannot include, because it conflicts
> with our own process.h). Nevertheless, doing what you suggest is
> worth a try, since there are no other ideas.
>
As always, Ken's suggestions are right!
Now this test case,
$ cat test.c
/*#include <stdint.h>*/
#include <unistd.h>
/*extern intptr_t execve (const char *, char * const *, char * const *);*/
/*extern intptr_t execve (const char *, char * const [], char * const []);*/
extern int execve (const char *, char * const *, char * const *);
int main()
{
return 0;
}
builds without warnings with
$ gcc -Wall test.c
BTW, I tried my first test case (that with the Emacs definition of
'execve') with the other compilers in MSYS2/MinGW-64/32, and both MSYS2
gcc 5.3 and MinGW64 gcc-6.1 give the warning, instead MinGW32 gcc-6.1
does not print warnings.
Ciao,
Angelo.
next prev parent reply other threads:[~2016-08-31 19:56 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-31 8:01 Too many warnings building Emacs with GCC 6 on MSYS2-MinGW64 Angelo Graziosi
2016-08-31 14:27 ` Eli Zaretskii
2016-08-31 15:01 ` Angelo Graziosi
2016-08-31 15:42 ` Eli Zaretskii
2016-08-31 17:40 ` Angelo Graziosi
2016-08-31 18:11 ` Ken Brown
2016-08-31 18:47 ` Eli Zaretskii
2016-08-31 19:56 ` Angelo Graziosi [this message]
2016-09-01 2:37 ` Eli Zaretskii
2016-09-01 7:44 ` Angelo Graziosi
2016-09-01 14:17 ` Eli Zaretskii
2016-09-01 15:42 ` Angelo Graziosi
2016-09-01 16:04 ` Eli Zaretskii
2016-09-01 16:12 ` Eli Zaretskii
2016-09-01 16:14 ` Angelo Graziosi
2016-09-01 16:17 ` Davis Herring
2016-09-01 16:24 ` Ken Brown
2016-09-01 17:43 ` Davis Herring
2016-09-01 16:29 ` Eli Zaretskii
2016-09-01 16:32 ` Andreas Schwab
2016-09-01 16:49 ` Eli Zaretskii
2016-09-01 16:25 ` Angelo Graziosi
2016-09-01 16:30 ` Eli Zaretskii
2016-09-01 19:44 ` Angelo Graziosi
2016-09-01 17:19 ` Eli Zaretskii
2016-08-31 18:18 ` Eli Zaretskii
2016-09-01 18:50 ` Richard Stallman
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