# HEADER_DIRS

Added in version 3.23.

Semicolon-separated list of base directories of the target's default header set (i.e. the file set with name and type `HEADERS`). The property supports `generator expressions`.

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

See `HEADER_DIRS_<NAME>` for the list of base directories in other header sets.