From: Fabrice Popineau <fabrice.popineau@gmail.com>
To: Phillip Lord <phillip.lord@russet.org.uk>
Cc: 22959@debbugs.gnu.org
Subject: bug#22959: Emacs on Windows depends on libwinpthreads
Date: Mon, 18 Apr 2016 15:41:59 +0200 [thread overview]
Message-ID: <CAFgFV9PVAoRwtPB8a1i1K9cdNd8a2knPTu0cB4_B1-STgX8SHg@mail.gmail.com> (raw)
In-Reply-To: <87zisrawxw.fsf@russet.org.uk>
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2016-04-18 15:06 GMT+02:00 Phillip Lord <phillip.lord@russet.org.uk>:
> Eli Zaretskii <eliz@gnu.org> writes:
>
> >> From: Fabrice Popineau <fabrice.popineau@gmail.com>
> >> Date: Sat, 16 Apr 2016 23:48:35 +0200
> >>
> >> At this point, when I build emacs for w64 using msys2,
> >> emacs.exe depends on libwinpthread for only one symbol
> >> which is clock_gettime().
> >> This is called from lib/gettime.c:gettime().
> >
> > This is not supposed to happen. I don't see this on my system.
> >
> > There's some factor at work here that I cannot figure out: the
> > configure-time test for clock_gettime doesn't try to look for that
> > function in the pthreads library, it only tries the "normal" link
> > without any extra libraries, and if that fails, tries 2 extra
> > libraries: librt and libposix4, none of which I'd expect to see on
> > MS-Windows in a MinGW installation.
>
>
> I did get the same thing at one point.
>
>
> > It could be something peculiar to MinGW64/MSYS2 build. Are you sure
> > libwinpthread dependency is not a requirement of the MinGW64 GCC port?
>
> This was the cause of the problem for me.
>
>
Add this:
diff --git a/nt/mingw-cfg.site b/nt/mingw-cfg.site
index 05034fe..0063c2b 100644
--- a/nt/mingw-cfg.site
+++ b/nt/mingw-cfg.site
@@ -40,6 +40,12 @@ gl_cv_sys_struct_timespec_in_pthread_h=no
# Or at all...
ac_cv_header_pthread_h=no
+# We don't want to check for these functions
+# because they are implemented in libwinpthread.
+ac_cv_search_clock_gettime="none required"
+ac_cv_func_clock_gettime=no
+ac_cv_func_clock_settime=no
+
# ACL functions are implemented in w32.c
ac_cv_search_acl_get_file="none required"
ac_cv_func_acl_get_file=yes
And the dependency towards libwinpthread is gone for MinGW64.
Fabrice
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next prev parent reply other threads:[~2016-04-18 13:41 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-09 14:52 bug#22959: Emacs on Windows depends on libwinpthreads Phillip Lord
2016-03-09 16:20 ` Eli Zaretskii
2016-03-09 16:32 ` Phillip Lord
2016-03-09 16:59 ` Eli Zaretskii
2016-03-09 18:56 ` Phillip Lord
2016-03-09 19:16 ` Eli Zaretskii
2016-04-16 21:48 ` Fabrice Popineau
2016-04-17 14:37 ` Eli Zaretskii
2016-04-17 15:25 ` Fabrice Popineau
2016-04-17 16:42 ` Eli Zaretskii
2016-04-17 19:31 ` Fabrice Popineau
2016-04-18 18:58 ` Eli Zaretskii
2016-04-18 19:50 ` Fabrice Popineau
2016-04-21 16:25 ` Eli Zaretskii
2016-04-18 13:06 ` Phillip Lord
2016-04-18 13:41 ` Fabrice Popineau [this message]
2016-04-18 19:02 ` Eli Zaretskii
2016-04-19 7:26 ` Fabrice Popineau
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