[CMake] CMake 2.8.8 Upgrade problem with Xcode on OS X 10.8

[David Cole]

If that's actually what the problem is here, then it should be fixed
in CMake 2.8.8.

If you are moving from one Xcode to another, please ALWAYS start over
with an empty build directory. There are way too many things cached in
CMakeCache.txt that depend on file locations to even think about
trying to do an incremental build across a system compiler upgrade ( /
location change ... )


Cheers,
David


On Thu, Aug 9, 2012 at 3:52 PM, Michael Toy <michael.toy at onlive.com> wrote:
> I have seen this problem as we upgraded from older XCodes.  In all the
> places where cmake looks at your version of Xcode except one, it looks at
> "xcode-select -print–path".  In that one place, it looks in
> /Developer/Applications/XCode.app.  I think this bug is fixed in 2.8.9, and
> until then you can work around it by placing a symlink from
> /Developer/Applications/XCode.app to your actual Xcode installation.
>
> From: Etuka Onono <etuka at tesco.net>
> Date: Wednesday, August 8, 2012 5:34 PM
> To: "cmake at cmake.org" <cmake at cmake.org>
> Subject: [CMake] CMake 2.8.8 Upgrade problem with Xcode on OS X 10.8
>
> After I upgraded to OS X 10.8, I recently upgraded my CMake version to
> 2.8.8.
>
> I can build CMake projects if I use "Unix Makefiles" as a generator, but if
> I use the Xcode generator, I get the following error:
>
> The C compiler identification is GNU 4.2.1
> The CXX compiler identification is GNU 4.2.1
> Checking whether C compiler has -isysroot
> Checking whether C compiler has -isysroot - yes
> Checking whether C compiler supports OSX deployment target flag
> Checking whether C compiler supports OSX deployment target flag - yes
> Check for working C compiler using: Xcode
> Check for working C compiler using: Xcode -- broken
>
> CMake Error at /Developer/CMake
> 2.8-8.app/Contents/share/cmake-2.8/Modules/CMakeTestCCompiler.cmake:52
> (MESSAGE):
> The C compiler "/usr/bin/gcc" is not able to compile a simple test program.
>
> It fails with the following output:
>
> Change Dir: /Users/etuka/projects/baml/onethousand/build/CMakeFiles/CMakeTmp
>
>
> Run Build Command:/Developer/CMake\ 2.8-8.app/Contents/bin/cmakexbuild
> -project CMAKE_TRY_COMPILE.xcode build -target cmTryCompileExec3395723889
> -buildstyle Development
>
> xcodebuild: error: option '-buildstyle' is no longer supported
>
> I understand that this error is associated with earlier versions of Cmake
> that are incompatible with Xcode 4.4.  I have tried removing all traces of
> CMake 2.8.8 that I can from my system and re-installing, but I cannot get
> rid of this error.  I would be grateful for suggestions of what to try next.
>
> Thanks,
>
> Etuka Onono
>
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