[cmake-developers] Suspicious Clang versions

[Stephen Kelly]

Brad King wrote:

> On 08/05/2013 02:08 AM, Rolf Eike Beer wrote:
>> sean at rogue-research.com wrote:
>>> very confusingly, Apple uses their own version numbering scheme.  So
>>> that's "Apple clang 4.0".  It comes with whatever version of Xcode that
>>> machine's running (4.4 I think?).
>> 
>> any version checking like I do in the CXXFeatures test is entirely mood
>> for Clang.
> 
> We need to fix this somehow or CMAKE_*_COMPILER_VERSION will be
> useless for Clang.  Sean, is there any way to extract the underlying
> Clang version, perhaps with different preprocessor macros?  We at
> least need to be able to detect which version scheme is in use so
> we can report it somehow.

This might lead to a solution:

 https://github.com/mozilla/rust/issues/6419

Thanks,

Steve.