No subject

    } elseif {[regexp {^clang$} $compiler]} {
        switch $type {
            cc      -
            objc    { return [find_developer_tool clang] }
            cxx     -
            objcxx  {
                set clangpp [find_developer_tool clang++]
                if {[file executable $clangpp]} {
                    return $clangpp
                }
                return [find_developer_tool llvm-g++-4.2]
            }
        }

Mojca