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X-HELO:	calimero.vinschen.de
Date:	Sun, 21 Aug 2016 12:30:28 +0200
From:	Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To:	cygwin AT cygwin DOT com
Subject:	Re: GIT source build failure: wcwidth.c::_wcwidth misses __locale_cjk_lang()
Message-ID:	<20160821103028.n7via5q3t4xbusjx@calimero.vinschen.de>
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Hi Hans-Bernhard,

On Aug 21 00:09, Hans-Bernhard Br=C3=B6ker wrote:
> Hello everyone,
>=20
> FWIW, I can't get the current may git clone of Cygwin to build on the
> current release version of itself: (64-bit "Current" on Win10):
>=20
> /home/hbbro/prg/cygwin/bld/x86_64-unknown-cygwin/newlib/libc/libc.a(lib_a=
-wcwidth.o):
> In function `__wcwidth':
> /home/hbbro/prg/cygwin/bld/x86_64-unknown-cygwin/newlib/libc/string/../..=
/../../../newlib-cygwin/newlib/libc/string/wcwidth.c:301:
> undefined reference to `__locale_cjk_lang'
> /home/hbbro/prg/cygwin/bld/x86_64-unknown-cygwin/newlib/libc/citrin/../..=
/../../../newlib-cygwin/newlib/libc/string/wcwidth.c:301:(.text+0xa4):reloc=
ation
> truncated to fit: R_X86_64_PC32 against undefined symbol `__locale_cjk_la=
ng'
> collect2: error: ld returned 1 exit status
> make: *** [Makefile:670: cygwin0.dll] Error 1
>=20
>=20
> Adding
>=20
> 	#include "../locale/setlocale.h"
>=20=09
> in libc/string/wcwidth.c appears to fix this.

thanks for the report, but I can't reproduce this.  I can build Cygwin
fine natively as well as on Linux, with and without optimization.

gcc -H shows how setlocale.h is already included via the inclusion of
./local.h --> ../ctype/local.h (simplified for readability):

  newlib/libc/string/wcwidth.c
  . newlib/libc/string/local.h
  .. newlib/libc/string/../ctype/local.h
  ... newlib/libc/string/../ctype/../locale/setlocale.h

This even works for me when building from within the source dir, which
isn't a supported build configuration.

So why does this fail for you?  I wonder if some compile time settings
are responsible for this problem.  How do you build Cygwin from the git
repo?  Do you use some special debug options or something like that?

Btw., there *is* a minor glitch in string/local.h.  The extern
declaration of __locale_cjk_lang should have been removed when changing
__locale_cjk_lang to an always inline function in setlocale.h, but it
has no negative impact on my builds.  I just removed the declaration.


Corinna

--=20
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

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