GNU make manual 翻译( 一百七十七)

`.FEATURES'
     Expands to a list of special features supported by this version of
     `make'.  Possible values include:

    `archives'
          Supports `ar' (archive) files using special filename syntax.
          *Note Using `make' to Update Archive Files: Archives.

    `check-symlink'
          Supports the `-L' (`--check-symlink-times') flag.  *Note
          Summary of Options: Options Summary.

    `else-if'
          Supports "else if" non-nested conditionals.  *Note Syntax of
          Conditionals: Conditional Syntax.

    `jobserver'
          Supports "job server" enhanced parallel builds.  *Note
          Parallel Execution: Parallel.

    `second-expansion'
          Supports secondary expansion of prerequisite lists.

    `order-only'
          Supports order-only prerequisites.  *Note Types of
          Prerequisites: Prerequisite Types.

    `target-specific'
          Supports target-specific and pattern-specific variable
          assignments.  *Note Target-specific Variable Values:
          Target-specific.


`.INCLUDE_DIRS'
     Expands to a list of directories that `make' searches for included
     makefiles (*note Including Other Makefiles: Include.).