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From: Simon Wright <simon@pushface.org>
Newsgroups: comp.lang.ada
Subject: Re: GNAT Community Edition 2018
Date: Sun, 10 Jun 2018 15:11:31 +0100
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Date: 2018-06-10T15:11:31+01:00
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Bill Findlay <findlaybill@blueyonder.co.uk> writes:

> On macOS 10.13.5 I get this sort of thing:
>
>> ld: warning: object file
>> (/Users/wf/opt/gnat-2018/lib/gcc/x86_64-apple-darwin16.7.0/7.3.1/adalib/libgnat.a(errno.o))
>> was built for newer OSX version (10.12) than being linked (10.11)

Normally that would mean that you're trying to link a binary built on a
later OS than the OS you're currently running; but that doesn't make
sense if you're running 10.13.

You _might_ be able to suppress the warning using

   -largs -Wl,-macosx_version_min,10.11

>From 'man ld':

   -macosx_version_min version
      This is set to indicate the oldest Mac OS X version that that the
      output is to be used on.  Specifying a later version enables the
      linker to assumes features of that OS in the out- put file.  The
      format of version is a Mac OS X version number such as 10.4 or
      10.5