在编写Makefile时,如果遇到循环依赖的问题,可以通过重构代码,使用前置声明或者分离依赖关系来规避循环依赖。
以下是一些常见的方法:
all: target1 target2
target1: dependency1
# commands
target2: dependency2
# commands
all: target1 target2
target1: dependency1
# commands
target2: dependency2
# commands
dependency1: dependency3
# commands
dependency2: dependency1
# commands
dependency3:
# commands
.PHONY: all target1 target2 dependency1 dependency2
all: target1 target2
target1: dependency1
# commands
target2: dependency2
# commands
dependency1: dependency3
# commands
dependency2: dependency1
# commands
dependency3:
# commands
通过以上方法,可以有效地规避循环依赖的问题,确保Makefile的正确执行。