New warning in clang 3.8svn breaks compiling ThirdParty/libJPG/jpgd.cpp

Man, i have installer clang-3.7 for works with cry engine but i don’t know ho compile UnrealEngine with it.
When i do ./GenerateProjectFiles.sh i have the next error:

*** This version of the engine can only be compiled by clang - refusing to register the Linux toolchain.

Generating data for project indexing... 0%
UnrealBuildTool Exception: ERROR: GetPlatformToolChain: No tool chain found for Linux