several messages

[Ken Cunningham]

> several messages
> 
> Fred Wright fw at fwright.net  <mailto:macports-dev%40lists.macports.org?Subject=Re%3A%20several%20messages&In-Reply-To=%3Calpine.LRH.2.21.2007042035180.14781%40sh.sonic.net%3E>
> Sun Jul 5 04:08:09 UTC 2020
> 
> Previous message (by thread): Some questions regarding MacPorts legacy support package <https://lists.macports.org/pipermail/macports-dev/2020-July/042083.html>
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> I'm not sure where this "__ENVIRONMENT" prefix is coming from.  Is that a 
> version of the definitions created by legacy-support?
> 
every compiler on darwin forever defines it

% clang  -dM -E - < /dev/null | grep ENV
#define __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ 101500
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