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`.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.).
`.FEATURES'
展开为此版本的make 支持的特殊功能列表,可能的值包括:
`archives'
支持 使用特殊的文件名语法 来 ar 文件。*Note Using 'make' to Update Archive Files: Archives.
`check-symlink'
支持 -L (--check-symlink-times)标志 *Note Summary of Options: Options Summary
`else-if'
支持 "eles if" 非递归式条件式。*Note Syntax of Conditionals : Conditional Syntax.
`jobserver'
支持 "job server" 强化并行构建。*Note Parallel Execution: Parallel.
`second-expansion'
支持对前提条件列表的二次扩展。
`order-only'
支持仅排序前提条件。*Note Types of Prerequisites: Prerequeisite Types.
`target-specific'
支持 目的特定的和模式特定的变量赋值。 *Note Target-specific Variable Values: Target-specific.
`.INCLUDE_DIRS'
扩展为make 为包含的makefile而搜索的目录的列表(*note Including Other Makefiles: Include)
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