diff -Naur polly-3.4-orig/CMakeLists.txt polly-3.4/CMakeLists.txt
--- polly-3.4-orig/CMakeLists.txt	2013-11-21 06:51:46.000000000 -0500
+++ polly-3.4/CMakeLists.txt	2014-01-20 18:49:34.907919933 -0500
@@ -53,7 +53,7 @@
   execute_process(COMMAND "${LLVM_INSTALL_ROOT}/bin/llvm-config" --cxxflags
                   OUTPUT_VARIABLE LLVM_CXX_FLAGS
                   OUTPUT_STRIP_TRAILING_WHITESPACE)
-  set(CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS} ${LLVM_CXX_FLAGS})
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${LLVM_CXX_FLAGS}")
 endif(NOT DEFINED LLVM_MAIN_SRC_DIR)
 
 set(POLLY_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR})