[CMake] Configure Mac OS X for 32-bit

[Tron Thomas]

CMAKE_ BUILD_TYPE is only applicable to make based generators.  As far 
as I know, the Xcode generator for CMake is not a make based generator.  
So I would not expect CMAKE_BUILD_TYPE to work in this situation.

On 5-2-2010 12:43, Mike Jackson wrote:
> I think part of the problem you are seeing is that OS X 10.6 defaults
> to a 64 bit build where as OS X 10.5 defaults to a 32 bit build. So in
> order for you to build a 32 bit binary on OS X 10.6 you need to
> specifically set "CMAKE_OSX_ARCHITECTURES" to i386 when you want to
> build a 32 bit i386 executable on OS X 10.6.
>    You can generate a 32 bit PPC executable by setting
> CMAKE_OSX_ARCHITECTURES=ppc. The set the CMAKE_BUILD_TYPE to "Debug"
> and that should get you a 32 bit PPC executable that has Debugging
> symbols.
> _________________________________________________________
> Mike Jackson                  mike.jackson at bluequartz.net
>
>
> On Sun, May 2, 2010 at 11:41 AM, Tron Thomas<tron.thomas at verizon.net>  wrote:
>    
>> Before when I was using an earlier version of CMake, it would configure the
>> project to build a 32-bit version of all the project target's regardless of
>> which version of Mac OS X I was using.  It would also build just the
>> platform specific version of the targets for a debug build.
>>
>> Now that I have upgraded to CMake version 2.8.1, CMake wants to configure
>> the project's targets to build for 64-bit on Mac OS X 10.6.
>>
>> The only way I've found so far to make Mac OS X 10.6 build 32-bit, is to
>> modify the CMAKE_OSX_ARCHITECTURES to include i386.  However, if I set
>> CMAKE_OSX_ARCHITECTURES to only i386, then it will build create an Intel
>> version of all targets when I build on a PowerPC system.  That means I won't
>> be able to run and test the targets on that platform.
>>
>> I'm trying to get things back to where they were before I upgraded to CMake
>> 2.8.1.  I want it to configure Xcode to build 32-bit targets, with
>> architecture specific version for debug builds.
>>
>> How can someone accomplish this?
>>
>> On 05/02/2010 01:58 AM, Michael Wild wrote:
>>
>> Well, setting CMAKE_OSX_ARCHITECTURES to i386 AND ppc is going to get you a
>> universal build, both of the architectures being 32-bit. So, what is it
>> exactly that you want?
>>
>> Michael Wild
>>
>> On Sun, May 2, 2010 at 8:15 AM, Tron Thomas<tron.thomas at verizon.net>  wrote:
>>      
>>> It looks like:
>>> set (CMAKE_OSX_ARCHITECTURES "i386 ppc")
>>>
>>> will build a universal binary for a debug build on any platform.  How can
>>> someone configure things so that Xcode will build a platform specific debug
>>> version that is 32-bit?
>>>
>>>
>>> On 05/01/2010 04:55 PM, Mike Jackson wrote:
>>>        
>>>> You need to set the CMAKE_OSX_ARCHITECTURES to i386. The default build
>>>> on snow leopard is 64bit where as on leopard it is 32 bit.
>>>>
>>>> -----
>>>> Mike Jackson                      www.bluequartz.net
>>>> Principal Software Engineer       mike.jackson at bluequartz.net
>>>> BlueQuartz Software               Dayton, Ohio
>>>>
>>>>
>>>> On May 1, 2010, at 15:33, Tron Thomas<tron.thomas at verizon.net>    wrote:
>>>>
>>>>
>>>>          
>>>>> I am writing a cross platform application using CMake that builds on
>>>>> Mac OS X.  I just upgraded to CMake 2.8-1.  When I configure and
>>>>> build my project on my Power Mac G5 system running Mac OS X 10.5.8,
>>>>> the project builds just fine.
>>>>>
>>>>> When I try to configure the project on my MacBook Pro running Mac OS
>>>>> X 10.6.3, I get link errors because the project has been configured
>>>>> to build 64-bit applications and some of the needed libraries and
>>>>> frameworks the project links with are only 32-bit.
>>>>>
>>>>> How can I configure my CMake scripts so that the project will build
>>>>> a 32-bit application on my MacBook Pro?
>>>>>
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>>>>
>>>>          
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>>
>>
>>      
>
>