GNU logs - #37650, boring messages

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Subject: bug#37650: Fw: Possible bug.
Resent-From: George R Goffe <grgoffe@HIDDEN>
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Date: Mon, 7 Oct 2019 21:31:25 +0000 (UTC)
From: George R Goffe <grgoffe@HIDDEN>
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Hi,
I'm building the "latest" coreutils on my Fedora Core 32 x86_64 system with=
 two different versions of the gcc compilers. Both builds are failing with =
this indication:
In file included from lib/nproc.c:50:
/usr/include/sys/sysctl.h:21:2: error: #warning "The <sys/sysctl.h> header =
is deprecated and will be removed." [-Werror=3Dcpp]
21 | #warning "The <sys/sysctl.h> header is deprecated and will be removed.=
"
|=C2=A0 ^~~~~~~
cc1: all warnings being treated as errors

I guess the builds would succeed if it weren't for the "-Werror=3Dcpp" flag=
. I can try removing this flag if you'd like. I thought you might like to s=
ee this error though.
I can provide build logs for both versions if you need/want them.
Best Regards,
George...
 =20
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<html><head></head><body><div class=3D"yahoo-style-wrap" style=3D"font-fami=
ly:times new roman, new york, times, serif;font-size:16px;"><div style=3D"f=
ont-family:'Helvetica Neue', Helvetica, Arial, sans-serif;font-size:13px;co=
lor:#26282a;">Hi,<div><div id=3D"ydp3307dafeyiv7040806801"><div><div class=
=3D"ydp3307dafeyiv7040806801yahoo-style-wrap" style=3D"font-family:Helvetic=
a Neue, Helvetica, Arial, sans-serif;font-size:16px;"><div dir=3D"ltr"><br>=
</div><div dir=3D"ltr">I'm building the "latest" coreutils on my Fedora Cor=
e 32 x86_64 system with two different versions of the gcc compilers. Both b=
uilds are failing with this indication:</div><div dir=3D"ltr"><br></div><di=
v dir=3D"ltr"><div>In file included from lib/nproc.c:50:<br>/usr/include/sy=
s/sysctl.h:21:2: error: #warning "The &lt;sys/sysctl.h&gt; header is deprec=
ated and will be removed." [-Werror=3Dcpp]<br>21 | #warning "The &lt;sys/sy=
sctl.h&gt; header is deprecated and will be removed."<br>|&nbsp; ^~~~~~~<br=
>cc1: all warnings being treated as errors<br><br></div><div><br></div><div=
 dir=3D"ltr">I guess the builds would succeed if it weren't for the "<span>=
-Werror=3Dcpp" flag. I can try removing this flag if you'd like. I thought =
you might like to see this error though.</span></div><div dir=3D"ltr"><span=
><br></span></div><div dir=3D"ltr"><span>I can provide build logs for both =
versions if you need/want them.</span></div><div dir=3D"ltr"><span><br></sp=
an></div><div dir=3D"ltr"><span>Best Regards,</span></div><div dir=3D"ltr">=
<span><br></span></div><div dir=3D"ltr"><span>George...</span><br></div></d=
iv></div></div></div></div>
            </div><div id=3D"ydp3307dafeyahoo_quoted_1422492629" class=3D"y=
dp3307dafeyahoo_quoted">
        </div></div></body></html>
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From: help-debbugs@HIDDEN (GNU bug Tracking System)
To: George R Goffe <grgoffe@HIDDEN>
Subject: bug#37650: Acknowledgement (Fw: Possible bug.)
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Reply-To: 37650 <at> debbugs.gnu.org
Date: Mon, 07 Oct 2019 21:34:02 +0000

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37650: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=3D37650
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Message sent to bug-coreutils@HIDDEN:

Subject: bug#37650: Fw: Possible bug.
Resent-From: Paul Eggert <eggert@HIDDEN>
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From: Paul Eggert <eggert@HIDDEN>
Organization: UCLA Computer Science Department
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On 10/7/19 2:31 PM, George R Goffe via GNU coreutils Bug Reports wrote:
> I guess the builds would succeed if it weren't for the "-Werror=cpp" flag. I can try removing this flag if you'd like.

Yes, please do that. It's generally not a good idea to build with 
different flags than you configured with.

Message sent to bug-coreutils@HIDDEN:

Subject: bug#37650: Fw: Possible bug.
Resent-From: Paul Eggert <eggert@HIDDEN>
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From: Paul Eggert <eggert@HIDDEN>
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Date: Mon, 7 Oct 2019 23:53:39 -0700
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On 10/7/19 9:12 PM, George R Goffe wrote:

> The intent of the configure directive "--enable-gcc-warnings" that states, "turn on many GCC warnings (for developers; best with GNU make)" is, I guess, to warn developers of situations they need to be aware of.

Sorry, it looks like I misunderstood your bug report.

--enable-gcc-warnings is intended for developers, that is, people who are 
maintaining or modifying coreutils. It tends to generate so many false alarms 
that it is not intended for builders (people who are compiling and installing 
coreutils). This particular diagnostic appears to be a false alarm, as coreutils 
should configure and build just find if sys/sysctl.h is missing. So I suggest 
either ignoring the warning, or omitting --enable-gcc-warnings, or (and this is 
hardest suggestion, and meant only if you want to become a developer) developing 
a patch that pacifies your compiler.

Last modified: Mon, 25 Nov 2019 12:00:02 UTC

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