[tz] [PATCH] Support building zic.exe and zdump.exe natively on Windows with Visual Studio nmake.

[Manuela Friedrich]

Thanks, Paul!

Your patches work.
We can no build zic.exe and zdump.exe from the latest git revision.

Regards
Manuela Friedrich

-----Original Message-----
From: Paul Eggert [mailto:eggert at cs.ucla.edu] 
Sent: Donnerstag, 15. Februar 2018 09:10
To: Manuela Friedrich <Manuela.Friedrich at actian.com>; Time Zone Mailing List <tz at iana.org>
Subject: Re: [tz] [PATCH] Support building zic.exe and zdump.exe natively on Windows with Visual Studio nmake.

Manuela Friedrich wrote:

> localtime.c(1540) : error C2084: function 'tm *localtime(const time_t 
> *)' already has a body

I guess the Microsoft compiler is within its rights, since C89 and later say that portable applications are not allowed to redefine 'localtime'. Proposed patch attached (it's the first patch; it's not what you suggested, but I hope it works).


> So we added code that checks if TZDIR is not empty and only then applies the the leading slash.

I'm reluctant to base this on an empty TZDIR, partly because it's confusing (empty file names do not work with POSIX), and partly because skipping TZDIR has security implications on POSIX platforms. However, I suppose we can add a macro to do something similar. Proposed patch attached (it's the 2nd patch).