Makefile,头依赖 [英] Makefile, header dependencies
问题描述
%。o:%.c
gcc -Wall - 包括...
每当头文件更改时,我都希望* .o重建。而不是制定一个依赖列表,只要 / include
中的头文件发生更改,那么dir中的所有对象都必须重新构建。
我不能想到一个很好的方法来改变规则来适应这个,我可以接受建议。如果标题列表不需要硬编码,则会得到积分。
如果您使用GNU编译器,编译器可以为您组装一个依赖列表。 Makefile片段:
依赖:.depend
.depend:$(SRCS)
rm -f ./.depend
$(CC)$(CFLAGS)-MM $ ^ -MF ./.depend;
include .depend
或
依赖:.depend
.depend:$(SRCS)
rm -f ./.depend
$ (CC)$(CFLAGS)-MM $ ^> 。/。依靠;
include .depend
其中 SRCS
是一个变量,指向您的整个源文件列表。
还有工具 makedepend
,但是我从来没有像 gcc -MM
那样喜欢
Let's say I have a makefile with the rule
%.o: %.c
gcc -Wall -Iinclude ...
I want *.o to be rebuilt whenever a header file changes. Rather than work out a list of dependencies, whenever any header file in /include
changes, then all objects in the dir must be rebuilt.
I can't think of a nice way to change the rule to accomodate this, I'm open to suggestions. Bonus points if the list of headers doesn't have to be hard-coded
If you are using a GNU compiler, the compiler can assemble a list of dependencies for you. Makefile fragment:
depend: .depend
.depend: $(SRCS)
rm -f ./.depend
$(CC) $(CFLAGS) -MM $^ -MF ./.depend;
include .depend
or
depend: .depend
.depend: $(SRCS)
rm -f ./.depend
$(CC) $(CFLAGS) -MM $^ > ./.depend;
include .depend
where SRCS
is a variable pointing to your entire list of source files.
There is also the tool makedepend
, but I never liked it as much as gcc -MM
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