+# If polly exists and is not disabled compile it and add it to the LLVM tools.
+option(LLVM_BUILD_POLLY "Compile polly" ON)
+if( EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/polly/CMakeLists.txt )
+ if (LLVM_BUILD_POLLY)
+ add_subdirectory( ${CMAKE_CURRENT_SOURCE_DIR}/polly)
+ endif (LLVM_BUILD_POLLY)
+endif( EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/polly/CMakeLists.txt )
+