http://www.gnu.org/software/make/manual/html_node/Automatic-Variables.html#Automatic-Variables”rel=“noreferer”
$@
The file name of the target of the rule. If the target is an archive member, then ‘$@’ is the name of the archive file. In a pattern rule that has multiple targets (see Introduction to Pattern Rules), ‘$@’ is the name of whichever target caused the rule s recipe to be run.
$<
The name of the first prerequisite. If the target got its recipe from an implicit rule, this will be the first prerequisite added by the implicit rule (see Implicit Rules).
They are used to build rules that can be applied to different targets so that one does not need to repeat the same rule for each and every file that must be worked on...
PS:为了找到答案,我首先想到。 全球需求评估办公室的单一网页上的所有文件均使用我的浏览器搜索功能。