1# File containing various utilities
2
3# Converts a CMake list to a string containing elements separated by spaces
4function(TO_LIST_SPACES _LIST_NAME OUTPUT_VAR)
5  set(NEW_LIST_SPACE)
6  foreach(ITEM ${${_LIST_NAME}})
7    set(NEW_LIST_SPACE "${NEW_LIST_SPACE} ${ITEM}")
8  endforeach()
9  string(STRIP ${NEW_LIST_SPACE} NEW_LIST_SPACE)
10  set(${OUTPUT_VAR} "${NEW_LIST_SPACE}" PARENT_SCOPE)
11endfunction()
12
13# Appends a lis of item to a string which is a space-separated list, if they don't already exist.
14function(LIST_SPACES_APPEND_ONCE LIST_NAME)
15  string(REPLACE " " ";" _LIST ${${LIST_NAME}})
16  list(APPEND _LIST ${ARGN})
17  list(REMOVE_DUPLICATES _LIST)
18  to_list_spaces(_LIST NEW_LIST_SPACE)
19  set(${LIST_NAME} "${NEW_LIST_SPACE}" PARENT_SCOPE)
20endfunction()
21
22# Convinience function that does the same as LIST(FIND ...) but with a TRUE/FALSE return value.
23# Ex: IN_STR_LIST(MY_LIST "Searched item" WAS_FOUND)
24function(IN_STR_LIST LIST_NAME ITEM_SEARCHED RETVAL)
25  list(FIND ${LIST_NAME} ${ITEM_SEARCHED} FIND_POS)
26  if(${FIND_POS} EQUAL -1)
27    set(${RETVAL} FALSE PARENT_SCOPE)
28  else()
29    set(${RETVAL} TRUE PARENT_SCOPE)
30  endif()
31endfunction()
32