How to split strings across multiple lines in CMake?

Question

I usually have a policy in my project, to never create lines in text files that exceed a line length of 80, so they are easily editable in all kinds of editors (you know the

Answer 1

To maintain good indentation in your code it's straightforward enough just to do

message("These strings " "will all be "
        "concatenated. Don't forget "
        "your trailing spaces!")

Or form a string directly with

string(CONCAT MYSTR "This and " "that "
                    "and me too!")

as in Douglas' answer who has more details. However I thought this might just summarise the essential point.