[cfe-dev] Distinguishing between clang Window versions

[Edward Diener]

Since the two versions for clang on Windows, one using VC++ RTL and 
emulating VC++ to some small extent and the other using mingw rtl, are 
radically different, is there any easy way to distinguish between them 
at pre-execution time.

In Boost Build we currently have a single toolset named 'clang' for the 
clang compiler. On Linux it uses a clang-linux.jam file, on the Mac it 
uses a clang-darwin.jam file, and I am trying to establish .jam files 
for using clang on Windows. Essentially I can use the clang-linux.jam 
file with a slight modification if the clang version uses mingw, but I 
need to use a clang-win.jam file if the clang version uses VC++. So 
somewhere early in the Boost Build processing I have to determine which 
'clang.exe' is being used on Windows in order to invoke the proper Boost 
Build jam file for it.

Ideas ? Suggestions ?