Re: Missing wide character functions in libc.a

Re: Missing wide character functions in libc.a

[Christopher Faylor]

Please check out the project web page for links to available information
and ports:  http://cygwin.com/ .

If you don't see what you need there, then the cygwin mailing list is
the best place to make observations or get questions answered.
Information on the mailing list is available at the project web page.

For your convenience, I've reset the Reply-To: address to point to the
cygwin mailing list.  I've also Cc'ed this reply there.

On Tue, Sep 11, 2001 at 09:40:50AM +1000, Herbert wrote:
>Hi Christopher,
>
>I am doing a software migration Solaris to Windows 2000 at moment.  So
>I choosed Cygwin as the environment to recompiling my source.
>
>It was OK for a little while until I bumped into the missing
>towupper(), towlower(), wcscoll(), wcsfrm() and wcspbrk() functions.  I
>searched all libraries under /usr/lib and /lib, but failed to find
>these symbols.  Then I read you comment on 16-Jan-2001, about these
>missing functions.  I just would like to know:
>
>a) If there is a new version of Cygwin have this problem fixed?
>(Currently I am running 1.3.2)
>
>b) Is there a patch or bug fix some thing for this?
>
>c) If both above option is negative, would you know where to download
>the source for cygwin, so I can compile and add the related object file
>into libc.a.
>
>Thanks.
>
>--
>Preston Aviation Solution
>488 Victoria Street,
>Richmond 3121
>Tel: (03) 9426-8239
>Email: herbert@preston.net
>
>P.S.: Oh there is another problem too: /usr/include/mingw/values.h
>seems to be an empty file in the version I have here.

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Re: Missing wide character functions in libc.a

[Charles Wilson]

BTW, this subject (wide and multibyte character functions in cygwin) 
just came up on the XEmacs-nt list.  Ben Wing is trying to get "MULE" 
support for XEmacs to work on cygwin (MULE is some sort of 
character-coding, wide-char, unicode thingy...)

Anyway, check the xemacs-nt mailing list if you're interested: 
http://list-archive.xemacs.org/xemacs-nt/

(Also, you may see references to a possible (new) bug in sscanf -- I 
haven't had time to track that one down, and forgot to mention it.  I'll 
put that in its own thread)

(Chris hates these taglines, but here goes:
Just a datapoint.

--Chuck

Hmm...the message I was referring to doesn't seem to have made it into 
the xemacs-nt archives.  Well, here it is from my local copy:

> Ben Wing wrote:
> Mostly I've done a bunch of cleanup work.  I also fixed the various bugs pointed
> out by Fabrice, Daniel Pittman, and others, although not yet Matej's, which are
> harder.  It definitely should work on Windows w/Mule [probably without as well],
> and Cygwin w/o Mule.  Probably on other platforms as well.  One problem I've
> noticed so far is with Cygwin w/Mule: you get a crash at startup in
> parse-unicode-translation-table.  I don't quite know what the problem is and
> haven't been able to debug it yet, as the debugger keeps locking up.


David A. Cobb responded.
> Ben, I trust you are aware that widechar & mbchar support in Cygwin is full of holes?



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Re: Missing wide character functions in libc.a

[Herbert]

Would you know where can I find the source code to fix missing functions
(wcspbrk(), wcschr(), wcsrchr(), wcscoll(), wcsrfxm(), towupper(),
towlower() etc) in /lib/libc.a? I tried to "brower" from GNU's glibc source
(which does not build on Cygwin at moment), but it does not seem to be a
clean and easy cut.

I also download Cygwin source, but seem to me that these function just
haven't been implemented?!

Thanks.

Cheers,
Herbert
--
Preston Aviation Solution
488 Victoria Street,
Richmond 3121
Tel: (03) 9426-8239
Email: herbert@preston.net
----- Original Message -----
From: "Charles Wilson" <cwilson@ece.gatech.edu>
To: <cygwin@cygwin.com>
Cc: "Herbert" <herbert@preston.net>
Sent: Tuesday, September 11, 2001 11:24 AM
Subject: Re: Missing wide character functions in libc.a


> BTW, this subject (wide and multibyte character functions in cygwin)
> just came up on the XEmacs-nt list.  Ben Wing is trying to get "MULE"
> support for XEmacs to work on cygwin (MULE is some sort of
> character-coding, wide-char, unicode thingy...)
>
> Anyway, check the xemacs-nt mailing list if you're interested:
> http://list-archive.xemacs.org/xemacs-nt/
>
> (Also, you may see references to a possible (new) bug in sscanf -- I
> haven't had time to track that one down, and forgot to mention it.  I'll
> put that in its own thread)
>
> (Chris hates these taglines, but here goes:
> Just a datapoint.
>
> --Chuck
>
> Hmm...the message I was referring to doesn't seem to have made it into
> the xemacs-nt archives.  Well, here it is from my local copy:
>
> > Ben Wing wrote:
> > Mostly I've done a bunch of cleanup work.  I also fixed the various bugs
pointed
> > out by Fabrice, Daniel Pittman, and others, although not yet Matej's,
which are
> > harder.  It definitely should work on Windows w/Mule [probably without
as well],
> > and Cygwin w/o Mule.  Probably on other platforms as well.  One problem
I've
> > noticed so far is with Cygwin w/Mule: you get a crash at startup in
> > parse-unicode-translation-table.  I don't quite know what the problem is
and
> > haven't been able to debug it yet, as the debugger keeps locking up.
>
>
> David A. Cobb responded.
> > Ben, I trust you are aware that widechar & mbchar support in Cygwin is
full of holes?
>


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Re: Missing wide character functions in libc.a

[Charles Wilson]

Herbert wrote:

> Would you know where can I find the source code to fix missing functions
> (wcspbrk(), wcschr(), wcsrchr(), wcscoll(), wcsrfxm(), towupper(),
> towlower() etc) in /lib/libc.a? I tried to "brower" from GNU's glibc source
> (which does not build on Cygwin at moment), but it does not seem to be a
> clean and easy cut.


Well, on cygwin you don't really use "libc.a".  You use libcygwin.a 
(which is actually an import lib for cygwin1.dll -- but it is 
cygwin1.dll that contains the "libc" functions, really)

It's not surprising that the glibc stuff doesn't work -- cygwin uses 
newlib's implementations.  (Also, as has been previously stated, newlib 
cannot accept code 'lifted' from glibc for legal reasons).


> I also download Cygwin source, but seem to me that these function just
> haven't been implemented?!


Right.  If you want 'em, you're gonna have to write 'em from scratch. 
Without borrowing from glibc.  (And then send in a patch to the newlib 
folks.)

Wasn't this just discussed about two days ago?

--Chuck





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