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From: Simon Wright <simon@pushface.org>
Newsgroups: comp.lang.ada
Subject: Re: Installing GNAT 2012 on Mountain Lion
Date: Tue, 23 Oct 2012 16:02:07 +0100
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Date: 2012-10-23T16:02:07+01:00
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alexmartin715@gmail.com writes:

> I don't know if I made a mistake during installation but I am trying
> to get Gnat working on Mountain Lion. It has installed but when I run
> Gnatmake I get this:
>
> gnatbind -x extra.ali
> gnatlink extra.ali
> ld: in
> /usr/bin/gnat/lib/gcc/x86_64-apple-darwin10.8.0/4.5.4/adalib/libgnat.a(raise-gcc.o),
> corrupt archive, member contents extends past end of file for
> architecture x86_64
> collect2: ld returned 1 exit status
> gnatlink: error when calling /usr/bin/gnat/bin/gcc
> gnatmake: *** link failed.
>
> I have it installed on a current generation MBP 13 inch I7.

I have it installed on a current gen MBP 13-inch I5, and no such
problems. This is an install that was done on the previous early-2008
MBP 15-inch running - well, I can't remember when I installed Lion, so
it could have been Lion or Snow Leopard - and recovered from a Time
Machine backup.

I seem to have downloaded on 7 July, and the libgnat.a info is

$ ls -l /opt/gnat-gpl-2012/lib/gcc/x86_64-apple-darwin10.8.0/4.5.4/adalib/libgnat.a 
-rw-r--r--@ 1 simon1  simon1  5764464 14 May 15:10 /opt/gnat-gpl-2012/lib/gcc/x86_64-apple-darwin10.8.0/4.5.4/adalib/libgnat.a

$ md5 /opt/gnat-gpl-2012/lib/gcc/x86_64-apple-darwin10.8.0/4.5.4/adalib/libgnat.a 
MD5 (/opt/gnat-gpl-2012/lib/gcc/x86_64-apple-darwin10.8.0/4.5.4/adalib/libgnat.a) = 19dd744947c6fa1d180dfb520f6b077d

I can only suggest reinstalling.

Did it really install in /usr/bin/gnat/? Here, it wants to install in
/usr/local/gnat/ which is much more normal. You'll see from the
above that I have my own views on where to install GNAT (because I need
to have several version on-the-go).