[CMake] CMake's Xcode generator seems to ignore the CMAKE_CXX_COMPILER variable

[Michael Jackson]

And what do we do when Apple releases GCC 4.3 or 4.4? Then CMake is  
broke again. Run the gcc -dumpversion to extract out exactly which  
version is being used. The code to do that is in lots of places.

_________________________________________________________
Mike Jackson                  mike.jackson at bluequartz.net
BlueQuartz Software                    www.bluequartz.net
Principal Software Engineer                  Dayton, Ohio



On Feb 24, 2009, at 11:05 AM, Stephan Aiche wrote:

> Since you can only choose the following compilers in Xcode (at least  
> in the version i have seen)
>
> GCC 3.3 (GCC_VERSION = 3.3)
> GCC 4.0 (GCC_VERSION = 4.0)
> GCC 4.2 (GCC_VERSION = 4.2)
> LLVM GCC 4.2 (GCC_VERSION = com.apple.compilers.llvmgcc42)
>
> it seems reasonable (to me) to give also only this possibilities in  
> CMake! Note that XCode offers those option even if some of those  
> compilers are not installed. I think Xcode will not work with any  
> compiler that was not installed with Xcode, at least I can not find  
> any option inside of Xcode.
>
> Stephan
>
> On Feb 24, 2009, at 4:28 PM, Mathieu Malaterre wrote:
>
>> On Tue, Feb 24, 2009 at 4:23 PM, Sean McBride <sean at rogue-research.com 
>> > wrote:
>>> On 2/24/09 10:01 AM, Bill Hoffman said:
>>>
>>>> That will not work with Xcode projects.  I am not sure how you tell
>>>> Xcode to use a different compiler.  Any Xcode experts out there?
>>>
>>> The compiler choice is amongst the project/target settings.  In an
>>> xcconfig file, you would use, for example:
>>>
>>> GCC_VERSION = 4.0
>>>
>>> or
>>>
>>> GCC_VERSION = 4.2
>>>
>>
>> This would mean extracting the major.minor from: "gcc - 
>> dumpversion" ...
>>
>>
>> -- 
>> Mathieu
>
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