# HEADER_SET

Added in version 3.23.

Semicolon-separated list of files in the target's default header set, (i.e. the file set with name and type `HEADERS`). If any of the paths are relative, they are computed relative to the target's source directory. The property supports `generator expressions`.

This property is normally only set by `target_sources(FILE_SET)` rather than being manipulated directly.

See `HEADER_SET_<NAME>` for the list of files in other header sets.