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Problems building for older Macs

From: Jasper Taylor
Subject: Problems building for older Macs
Date: Fri, 23 Jan 2009 17:44:18 +0000

Hi folks,
I have a Macbook running OSX 10.5. I want to distribute a prolog executable to run on older Macs, but I have problems. Firstly, my executable just gives 'bus error' when running on an OSX 10.4 Mac. This is even though I supply the -mmacosx-version-min=10.3 flag to gcc via the '-C' option of gplc when building it. I rebuilt Prolog itself using this flag, but that did not help. This is using gcc 4.0. Secondly I tried to build an executable for PowerPC macs by including the '-arch ppc' flag. This built the object code OK, but when making the executable I got:
cc1: error: unrecognized command line option "-march=i486"
In fact the object file reports itself as being of i386 architecture so I would be quite prepared to believe this is impossible!

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