set( CMAKE_LIBRARY_OUTPUT_DIRECTORY ${LLVM_BINARY_DIR}/lib )
set( CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${LLVM_BINARY_DIR}/lib )
-set( CMAKE_INSTALL_RPATH "\$ORIGIN/../lib")
+if( NOT DEFINED CMAKE_INSTALL_RPATH )
+ set( CMAKE_INSTALL_RPATH "\$ORIGIN/../lib")
+endif( NOT DEFINED CMAKE_INSTALL_RPATH )
set(CMAKE_INCLUDE_CURRENT_DIR ON)