What is the purpose for the OSX_ARCHITECTURE and
OSX_ARCHITECTURES_<CONFIG> properties that already exist in CMAKE? It
seems like they might be properties that are already meant to address an
issue like this, only I can't figure out how they work.
Also, I think previous versions of CMake did not have this problem, only
I'm not certain of that.
On 05/02/2010 11:36 PM, Michael Wild wrote:
Ahh, you want a release build to be i386 AND ppc and your debug build to be just ppc?
Use different binary trees then. Simple as that. If you're not satisfied with that,
put a feature request for CMAKE_OSX_ARCHITECTURES_<CONFIG> in the bug
tracker...
Michael
On 2. May, 2010, at 23:39 , Tron Thomas wrote:
Hello Werner,
It is not just a simple matter of setting the architectures to either i386 or
ppc. For debug, the project should create an architecture specific build. For
release, the project should build an universal binary.
The help documentation for CMake mentions a property call
OSX_ARCHITECTURES_DEBUG which sounds like it should do the trick for setting
the architectures needed for a debug build. I have tried using this property
and it doesn't work for me. I wonder if there might be some bugs in CMake
around setting the proper architectures for different build types on Mac OS X.
I could trying using the -m32 compiler option and see how that works. I would
just expect there should be a more direct way to solve this problem. I'm also
concerned that applying the option might cause an error. I believe that CMake
is going to configure the project to use the -arch x86_64 flag, and I'm not
sure how well things will work if the -arch x86_64 is used with the -m32 flag.
Hi Thomas,
On 5/2/10 5:41 PM, Tron Thomas 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?
why not set this option when you call cmake? so:
cmake -DCMAKE_OSX_ARCHITECTURES=386 path-to-source
on your 10.6 system and
cmake -DCMAKE_OSX_ARCHITECTURES=ppc path-to-source
on your old system (that is, if you use the command line cmake).
Alternatively you could add the -m32 option to gcc like this
export CC="gcc -m32"
cmake path-to-source
on your 10.6 system where a 32 bit application should then be build
(according e.g.
http://www.cyberciti.biz/tips/compile-32bit-application-using-gcc-64-bit-linux.html
, which should also be true for Mac OS X 10.6).
Regards,
Werner
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