Add CLANG_{SOURCE,BINARY}_DIR cmake variables.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@82098 91177308-0d34-0410-b5e6-96231b3b80d8

CMakeLists.txt

@@ -5,6 +5,9 @@ configure_file(
   ${CMAKE_CURRENT_SOURCE_DIR}/VER
   ${CMAKE_CURRENT_BINARY_DIR}/VER)
 
+set(CLANG_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR})
+set(CLANG_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR})
+
 # Compute the Clang version from the contents of VER
 file(READ ${CMAKE_CURRENT_SOURCE_DIR}/VER CLANG_VERSION_DATA)
 string(REGEX MATCH "[0-9]+\\.[0-9]+(\\.[0-9]+)?" CLANG_VERSION