Wireshark-dev: Re: [Wireshark-dev] Problems with r40742
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From: Stephen Fisher <steve@xxxxxxxxxxxxxxxxxx>
Date: Thu, 16 Feb 2012 17:03:16 -0700
---- On Thu, 16 Feb 2012 15:47:52 -0700 Jeff Morriss  wrote ---- 

>>Looks like FreeBSD provides a timezone() function which they admit[1] is 
>not POSIX compliant[2]. And their time.h[3] doesn't seem to have any 
>kind of variable that gives the same functionality... 
> 
>I guess what's needed is to: 
>- check for the variable at configure time 
>- if we don't have it, call localtime() to get a struct tm, and pull the 
>timezone offset out of there 
> 
>Maybe the first step can just be skipped for simplicity, though. I'll 
>try to get to that tonight unless someone beats me to it. 

Thanks.  The description of localtime in your references and on Microsoft's site say that the timezone/_timezone variable is affected by the TZ variable.  Would the timezone from struct tm (tm_gmtoff?) behave in the same way (or does it need to?  I haven't looked at the surrounding code much).