# From: https://stackoverflow.com/a/7216542
function(JOIN VALUES GLUE OUTPUT)
  string (REGEX REPLACE "([^\\]|^);" "\\1${GLUE}" _TMP_STR "${VALUES}")
  string (REGEX REPLACE "[\\](.)" "\\1" _TMP_STR "${_TMP_STR}") #fixes escaping
  set (${OUTPUT} "${_TMP_STR}" PARENT_SCOPE)
endfunction()