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Message-ID: <f34666fe-f8da-4364-a5e7-b2328b2f1c80@SystematicSW.ab.ca>
Date: Wed, 9 Apr 2025 13:49:48 -0600
MIME-Version: 1.0
User-Agent: Mozilla Thunderbird
Subject: Latest c-ares build compile failure from sys/unistd.h
To: Cygwin <cygwin AT cygwin DOT com>
Content-Language: en-CA
Organization: Systematic Software
From: Brian Inglis via Cygwin <cygwin AT cygwin DOT com>
Reply-To: cygwin AT cygwin DOT com
Cc: Brian Inglis <Brian DOT Inglis AT SystematicSW DOT ab DOT ca>
Content-Type: text/plain; charset="utf-8"; Format="flowed"
Sender: "Cygwin" <cygwin-bounces~archive-cygwin=delorie DOT com AT cygwin DOT com>
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Hi folks,

Latest c-ares build failing with gcc 12.4 and Cygwin 3.6.0 header:

$ uname -srvmo
CYGWIN_NT-10.0-19045 3.6.0-1.x86_64 2025-03-18 17:01 UTC x86_64 Cygwin
$ gcc --version
gcc (GCC) 12.4.0
Copyright (C) 2022 Free Software Foundation, Inc.
...

/usr/include/sys/unistd.h:218:14: error: expected ';' before 'void'
   218 | static inline void setproctitle_init (int _c, char *_a[], char *_e[]) {}
       |              ^~~~~
       |              ;

$ ll -gG /usr/include/sys/unistd.h
-rw-r--r-- 1 23K Mar 18 11:09 /usr/include/sys/unistd.h
...
215     #if defined(__CYGWIN__) && __BSD_VISIBLE
216     /* Stub for Linux libbsd compatibility. */
217     #define initsetproctitle(c, a, e) setproctitle_init((c), (a), (e))
218     static inline void setproctitle_init (int _c, char *_a[], char *_e[]) {}
219
220     void setproctitle (const char *, ...)
221                        _ATTRIBUTE ((__format__ (__printf__, 1, 2)));
222     #endif
...

includes latest fix to definition; also tried with original definition.

Not seeing any obvious issues with storage class and type specifiers mentioned.

For now, build working with !defined(__CYGWIN__) hack.

No problem with other builds! Ideas welcome ;^>

-- 
Take care. Thanks, Brian Inglis              Calgary, Alberta, Canada

La perfection est atteinte                   Perfection is achieved
non pas lorsqu'il n'y a plus rien à ajouter  not when there is no more to add
mais lorsqu'il n'y a plus rien à retrancher  but when there is no more to cut
                                 -- Antoine de Saint-Exupéry


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