Targets can have properties that affect how they are built.

set_target_properties(target1 target2 ...
                      PROPERTIES prop1 value1
                      prop2 value2 ...)

Set properties on a target. The syntax for the command is to list all the files you want to change, and then provide the values you want to set next. You can use any prop value pair you want and extract it later with the get_property() or get_target_property() command.

See Properties on Targets for the list of properties known to CMake.