Add project files.

3rd-party/curl-7.52.1/CMake/Utilities.cmake

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+# File containing various utilities
+
+# Converts a CMake list to a string containing elements separated by spaces
+function(TO_LIST_SPACES _LIST_NAME OUTPUT_VAR)
+  set(NEW_LIST_SPACE)
+  foreach(ITEM ${${_LIST_NAME}})
+    set(NEW_LIST_SPACE "${NEW_LIST_SPACE} ${ITEM}")
+  endforeach()
+  string(STRIP ${NEW_LIST_SPACE} NEW_LIST_SPACE)
+  set(${OUTPUT_VAR} "${NEW_LIST_SPACE}" PARENT_SCOPE)
+endfunction()
+
+# Appends a lis of item to a string which is a space-separated list, if they don't already exist.
+function(LIST_SPACES_APPEND_ONCE LIST_NAME)
+  string(REPLACE " " ";" _LIST ${${LIST_NAME}})
+  list(APPEND _LIST ${ARGN})
+  list(REMOVE_DUPLICATES _LIST)
+  to_list_spaces(_LIST NEW_LIST_SPACE)
+  set(${LIST_NAME} "${NEW_LIST_SPACE}" PARENT_SCOPE)
+endfunction()
+
+# Convinience function that does the same as LIST(FIND ...) but with a TRUE/FALSE return value.
+# Ex: IN_STR_LIST(MY_LIST "Searched item" WAS_FOUND)
+function(IN_STR_LIST LIST_NAME ITEM_SEARCHED RETVAL)
+  list(FIND ${LIST_NAME} ${ITEM_SEARCHED} FIND_POS)
+  if(${FIND_POS} EQUAL -1)
+    set(${RETVAL} FALSE PARENT_SCOPE)
+  else()
+    set(${RETVAL} TRUE PARENT_SCOPE)
+  endif()
+endfunction()