继续翻译
`.PRECIOUS' The targets which `.PRECIOUS' depends on are given the following special treatment: if `make' is killed or interrupted during the execution of their recipes, the target is not deleted. *Note Interrupting or Killing `make': Interrupts. Also, if the target is an intermediate file, it will not be deleted after it is no longer needed, as is normally done. *Note Chains of Implicit Rules: Chained Rules. In this latter respect it overlaps with the `.SECONDARY' special target. You can also list the target pattern of an implicit rule (such as `%.o') as a prerequisite file of the special target `.PRECIOUS' to preserve intermediate files created by rules whose target patterns match that file's name. `.INTERMEDIATE' The targets which `.INTERMEDIATE' depends on are treated as intermediate files. *Note Chains of Implicit Rules: Chained Rules. `.INTERMEDIATE' with no prerequisites has no effect.
`.PRECIOUS'
那些 .PRECIOUS 所依赖的目的将得到特殊对待：如果 make在执行过程中 被杀掉或者中断，此目的不会被删除。
*Note Interrupting or Killing `make': Interrupts.
并且，如果目的是一个中间文件，当它不再被需要时，也不会被删除。 *Note Chains of Implicit Rules: Chained Rules. 它和后面的 .SECONDARY 特殊目的有些重复。
你也可以列出某隐式规则的目的模式(比如 %.o)， 来作为 特殊目的.PRECIOUS的前提条件文件，来保护那些符合模式的中间文件。
.INTERMEDIATE
.INTERMEDIATE 目的所依赖的目的被当作中间文件。
*Note Chains of Implicit Rules: Chained Rules.没有前提条件的 .INTERMEDIATE 没有效果。
后文待续