diff --git a/llvm/docs/CMake.rst b/llvm/docs/CMake.rst
--- a/llvm/docs/CMake.rst
+++ b/llvm/docs/CMake.rst
@@ -770,7 +770,8 @@
   # for your compiler.
 
   include_directories(${LLVM_INCLUDE_DIRS})
-  add_definitions(${LLVM_DEFINITIONS})
+  separate_arguments(LLVM_DEFINITIONS_LIST NATIVE_COMMAND ${LLVM_DEFINITIONS})
+  add_definitions(${LLVM_DEFINITIONS_LIST})
 
   # Now build our tools
   add_executable(simple-tool tool.cpp)
@@ -870,7 +871,8 @@
 
   find_package(LLVM REQUIRED CONFIG)
 
-  add_definitions(${LLVM_DEFINITIONS})
+  separate_arguments(LLVM_DEFINITIONS_LIST NATIVE_COMMAND ${LLVM_DEFINITIONS})
+  add_definitions(${LLVM_DEFINITIONS_LIST})
   include_directories(${LLVM_INCLUDE_DIRS})
 
   add_subdirectory(<pass name>)