Expand generator expression and add double qoutes aroung include dirs

Code
1

Hi,

I need to generate file with include dirs (taken from documentation):

file(GENERATE OUTPUT ${config_file} CONTENT 
  "$<$<BOOL:$<TARGET_PROPERTY:${MY_TARGET},INCLUDE_DIRECTORIES>>:
  -I$<JOIN:$<TARGET_PROPERTY:${MY_TARGET},INCLUDE_DIRECTORIES>, -I>>")

and the result is:

-IC:/aa -IC:/bb -IC:/c c

as you can see -IC:/c c contains spaces and this probably wont work properly if I pass it to clang.

How to modify this code so that the result would be:

-I"C:/aa" -I"C:/bb" -I"C:/c c"
2

Oh,

It seems it should be something like:

file(GENERATE OUTPUT ${config_file} CONTENT 
  "$<$<BOOL:$<TARGET_PROPERTY:${MY_TARGET},INCLUDE_DIRECTORIES>>:
  -I\"$<JOIN:$<TARGET_PROPERTY:${MY_TARGET},INCLUDE_DIRECTORIES>,\" -I\">>")