Re: Problems building for older Macs

On 2009/02/16, at 14:34, Daniel Diaz wrote:

> Jasper,
>
> it is not clear what you are trying. Is it to cross compile gprolog  
> (this does not work) or else what ?
> You have to produce the executable on the target machine (I know  
> Paulo could compile 1.3.1 for a ppc based mac some day ago).
>
> Hope this helps
>
> Daniel
>
> Jasper Taylor a écrit :
>> 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.

Is this OSX 10.4 Mac PowerPC-based or Intel-base? The MacBooks are  
Intel based so the executable will not work on PopwerPC. If your OSX  
10.4 Mac is also Intel-based, then the problem can be related to the  
different version of the operating system.

>> 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!
>>


Most likely not impossible but somewhere your flags are not passed to  
the build process. Hard to tell where the problem lies from your  
description. My suggestion is to install GNU Prolog using MacPorts:

% sudo port install -k gprolog

This worked fine for me both on Intel and PowerPC Macs. You can also  
use MacPorts to build an Apple's Installer package:

sudo port pkg gprolog

This worked fine for me in my Intel MacBook Pro but not in the PowerPC  
Mac (a Xserve) where I tried it. Could you try it and report back your  
findings?

Cheers,

Paulo


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Paulo Jorge Lopes de Moura
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