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From:	Mike Marchywka <marchywka AT hotmail DOT com>
To:	<cygwin AT cygwin DOT com>
Subject:	RE: fate/resolution/location of things like "sys/sockio.h"
Date:	Thu, 22 May 2008 17:48:14 -0400
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> From: dave DOT korn AT artimi DOT com
> Date: Thu, 22 May 2008 16:15:16 +0100

Thanks. If you are interested, let me try to give a chronology of follow on events as best as I can
reconstruct:

1:::::::::::::::::::::::::::::::::::::::::::
> Wrong place to look, surely?
>
> http://cygwin.com/cgi-bin2/package-grep.cgi?grep=sys%2Fsockio.h

Oddly enough, that helped :)
OK, so I copied sockio.h and also needed ioccom.h. Just to be clear,

http://cygwin.com/cgi-bin/cvsweb.cgi/src/newlib/libc/sys/linux/sys/ioccom.h?cvsroot=src

my install is messed up so I'm not sure this problem applies to anyone else
but I'm just being complete incase it matters.

2:::::::::::::::::::::::::::::::::::::::::::::::

Then, I encountered a define problem. This seems to have occured elsewhere
so I thought I would post the issue with definition of ssize_t: 

http://code.google.com/p/xdelta/issues/detail?id=56

This turned out to be flagged with __CYGWIN__ and also easy to fix in the makefile.

3::::::::::::::::::::::::::::::::::::::::::::::::::::::

But, then I had a missing definition for IFF_POINTOPOINT which does seem to be 
an issue with cygwin. According to this, the symbol should be defined in if.h: 

https://www.linux-foundation.org/dbadmin/browse/headgroup.php?cmd=list-byheadgroup&HGid=437

my if.h needed to be modified, 

#define IFF_LOOPBACK    0x8             /* is a loopback net            */
//
#define IFF_POINTOPOINT    0x10            /* mjm,            */
// https://www.linux-foundation.org/dbadmin/browse/headgroup.php?cmd=list-byheadgroup&HGid=437

#define IFF_NOTRAILERS  0x20            /* avoid use of trailers        */

4: ::::::::::::::::::::::::::::::::::::::::::::
Next, a problem with INET6_ADDSTRLEN16. I found this and implemented the suggestion,


http://viral.media.mit.edu/peers/peers-win.html

#if defined(__CYGWIN__) 
#define INET_ADDRSTRLEN 16 
#define INET6_ADDRSTRLEN 46 
#endif /* __CYGWIN__ */

which again seemed to work but I have no idea what other problems may turn up if this isn't right.

5::::::::::::::::::::::::::::::::::::::::::::

Then I finally encountered a big link problem and determined that some pieces
were built with and without -mno-cygwin. I was finally able to stop it from complaining
by grepping all the libraries for the missing symbols and just randomly adding stuff
but, duh, the executable wouldn't run. I can probably figure this out but I've never built anything with -mno-cygwin before
so it will probably take a while.



Thanks. 




Mike Marchywka
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> From: dave DOT korn AT artimi DOT com
> To: cygwin AT cygwin DOT com
> Subject: RE: fate/resolution/location of things like "sys/sockio.h"
> Date: Thu, 22 May 2008 16:15:16 +0100
>
> Mike Marchywka wrote on 22 May 2008 16:03:
>
>> but I can't figure out exactly what the status of "sys/sockio.h" is from
>> the results here:
>>
>> http://www.google.com/search?hl=en&q=site%3Acygwin.com++%22sockio.h%22
>
> Wrong place to look, surely?
>
> http://cygwin.com/cgi-bin2/package-grep.cgi?grep=sys%2Fsockio.h
>
>> Is there a definitive way to fix this?
>
> Fix what exactly? The fact that cygwin doesn't supply or support
> ? Well, yes, there is a definitive way to fix it:
>
> http://cygwin.com/acronyms#PTC
>
>
> cheers,
> DaveK
> --
> Can't think of a witty .sigline today....
>
>
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