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Date: Mon, 7 Mar 2016 09:59:13 -0900

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Subject: Re: [geda-user] anyone know how to get rid of these warnings

From: "Britton Kerin (britton DOT kerin AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>

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On Mon, Mar 7, 2016 at 12:44 AM, Peter Clifton
(petercjclifton AT googlemail DOT com) [via geda-user AT delorie DOT com]
<geda-user AT delorie DOT com> wrote:
>
> On 7 Mar 2016 03:14, "Britton Kerin (britton DOT kerin AT gmail DOT com) [via
> geda-user AT delorie DOT com]" <geda-user AT delorie DOT com> wrote:
>>
>> This stuff is about the last I'm aware of then could build with
>> -Werror and not have to watch for useful warnings.   -Wunused-value is
>> sometimes useful so I don't like to just turn it off.  I have no idea
>> about how gettext works though.
>
> Just a guess, are you building with NLS disabled? I think that turns some
> things into a no-op.

Yes.  I do that because without it -O0 builds fail for NLS-related reasons:

gcc -std=gnu99 -DLOCALEDIR=\"/tmp/junk/share/locale\" -DHAVE_CONFIG_H
-I. -I..  -I.. -I./hid/gtk -I/usr/include
-I/home/bkerin/local/include/dbus-1.0
-I/home/bkerin/local/lib/dbus-1.0/include
-I/home/bkerin/local/include/glib-2.0
-I/home/bkerin/local/lib/glib-2.0/include   -pthread
-I/home/bkerin/local/include/gtk-2.0
-I/home/bkerin/local/lib/gtk-2.0/include
-I/home/bkerin/local/include/atk-1.0
-I/home/bkerin/local/include/cairo
-I/home/bkerin/local/include/gdk-pixbuf-2.0
-I/home/bkerin/local/include/pango-1.0
-I/home/bkerin/local/include/glib-2.0
-I/home/bkerin/local/lib/glib-2.0/include
-I/home/bkerin/local/include/pixman-1 -I/home/bkerin/local/include
-I/home/bkerin/local/include/freetype2
-I/home/bkerin/local/include/harfbuzz -I/usr/include/libpng12
-I/usr/include  -pthread -I/home/bkerin/local/include/gtk-2.0
-I/home/bkerin/local/lib/gtk-2.0/include
-I/home/bkerin/local/include/pango-1.0
-I/home/bkerin/local/include/gdk-pixbuf-2.0
-I/home/bkerin/local/include/glib-2.0
-I/home/bkerin/local/lib/glib-2.0/include
-I/home/bkerin/local/include/cairo
-I/home/bkerin/local/include/pixman-1 -I/home/bkerin/local/include
-I/home/bkerin/local/include/freetype2
-I/home/bkerin/local/include/atk-1.0
-I/home/bkerin/local/include/harfbuzz -I/usr/include/gtkglext-1.0
-I/usr/lib/gtkglext-1.0/include -I/usr/include/libpng12   -pthread
-pthread -DPREFIXDIR=\"/tmp/junk\" -DBINDIR=\"/tmp/junk/bin\"
-DHOST=\"i686-pc-linux-gnu\" -DPCBLIBDIR=\"/tmp/junk/share/pcb\"
-DPCBTREEDIR=\"/tmp/junk/share/pcb/newlib\"
-DPCBTREEPATH=\"/tmp/junk/share/pcb/newlib:/tmp/junk/share/pcb/pcblib-newlib\"
 -Wall -g -O0 -Wno-declaration-after-statement -MT
hid/gtk/libgtk_a-gui-config.o -MD -MP -MF
hid/gtk/.deps/libgtk_a-gui-config.Tpo -c -o
hid/gtk/libgtk_a-gui-config.o `test -f 'hid/gtk/gui-config.c' || echo
'./'`hid/gtk/gui-config.c
In file included from ./global.h:84:0,
                 from hid/gtk/gui.h:28,
                 from hid/gtk/gui-config.c:35:
hid/gtk/gui-config.c: In function ‘config_layers_tab_create’:
./gettext.h:126:67: error: ‘LC_MESSAGES’ undeclared (first use in this function)
    pgettext_aux (NULL, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, LC_MESSAGES)
                                                                   ^
./global.h:91:19: note: in expansion of macro ‘pgettext’
 # define C_(C, S) pgettext(C, S)
                   ^
hid/gtk/gui-config.c:1753:36: note: in expansion of macro ‘C_’
   vbox = ghid_notebook_page (tabs, C_("tab", "Info"), 0, 6);
                                    ^
./gettext.h:126:67: note: each undeclared identifier is reported only
once for each function it appears in
    pgettext_aux (NULL, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, LC_MESSAGES)
                                                                   ^
./global.h:91:19: note: in expansion of macro ‘pgettext’
 # define C_(C, S) pgettext(C, S)
                   ^
hid/gtk/gui-config.c:1753:36: note: in expansion of macro ‘C_’
   vbox = ghid_notebook_page (tabs, C_("tab", "Info"), 0, 6);
                                    ^
make[2]: *** [hid/gtk/libgtk_a-gui-config.o] Error 1

> Building with -Werror may be fun for developers, but we can't ship like that
> (or probably even default to it in the repository)...

Agreed, but it's quite useful and since we're only a warning or two away from
clean enough to use it the policy should be to try to maintain it working.
If it gets broken in some trivial way its worth quickly merging the fix.

> There are too many different compilers with different warnings, and they
> change over time with what code patterns may give rise to a warning.

I'd still like to meet some of these non-gcc using pcb users.

Britton

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Date:	Mon, 7 Mar 2016 09:59:13 -0900
Message-ID:	<CAC4O8c_NCjEvxHQLe7A5Q97JsCdwR26TwqG+B0jT6cKGYBPN+w@mail.gmail.com>
Subject:	Re: [geda-user] anyone know how to get rid of these warnings
From:	"Britton Kerin (britton DOT kerin AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
To:	geda-user AT delorie DOT com
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