Shulou(Shulou.com)06/03 Report--

There are some predefined variables in the makefile, such as automatic variables: $@,$^,$ $@ refers to the target in the current rule that triggers the command to be executed;b> $^refers to all dependencies in the current rule;c> $

Let's take the code as an example to analyze and explain

.PHONY : all first second thirdall : first second third @echo "\$$@ => $@" @echo "$$^ => $^" @echo "$$

$

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