SOURCE_SETSΒΆ
Added in version 4.4.
Read-only list of the target's PRIVATE and PUBLIC source sets (i.e.
all file sets with the type SOURCES). Files listed in these file sets are
treated as source files.
Source sets may be defined using the target_sources() command
FILE_SET option with type SOURCES.
See also SOURCE_SET_<NAME>, SOURCE_SET and
INTERFACE_SOURCE_SETS.