[cmake-developers] Cross compiling toolchain variables

[Stephen Kelly]

Brad King wrote:

> These folks should try the CMake 2.8.12 release.  It added these:
> 
> OS X: Search system SDKs for frameworks
> http://cmake.org/gitweb?p=cmake.git;a=commitdiff;h=1fce189e
> 
> OS X: Enable command-line build without tools in PATH
> http://cmake.org/gitweb?p=cmake.git;a=commitdiff;h=03ab170f
> 
> which taught CMake how to search for things in the system SDK

I think there is a bug here. The paths you added are ignored if I set 
NO_DEFAULT_PATH. It seems to me that _CMAKE_OSX_SYSROOT_PATH should be 
treated as a root path - controlled by NO_CMAKE_FIND_ROOT_PATH, not by 
NO_DEFAULT_PATH. This is the source of the Qt bug report, I think.

The CMAKE_FIND_ROOT_PATH entries are searched even if NO_DEFAULT_PATH is 
specified. That is also the behavior of CMAKE_SYSROOT and if 
CMAKE_OSX_SYSROOT is to be merged/made obsolete by CMAKE_SYSROOT, then the 
behavior should be the same in CMake 2.8.12.1.

Thanks,

Steve.