The string() command

The string() command is used to manipulate strings. It comes with a variety of modes that perform different actions on the string: search and replace, manipulation, comparison, hashing, generation, and JSON operations (the last one available since CMake 3.19).

Full details can be found in the online documentation: https://cmake.org/cmake/help/latest/command/string.html.

Note that string() modes that accept the <input> argument will accept multiple <input> values and concatenate them before the execution of the command, so:

string(PREPEND myVariable "a" "b" "c")

is the equivalent of the following:

string(PREPEND myVariable "abc")

Available string() modes are search and replace, manipulation, comparison, hashing, generation, and JSON.

Search and replace

The following modes are available:

• string(FIND <haystack> <pattern> <out> [REVERSE...