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If I have a Makefile as follows

server : network.o storage.o logic.o
    ld network.o storage.o logic.o -o server

network.o : network.c netdefs.h
    cc -c -o network.o network.c

storage.o : storage.c defs.h
    cc -c -o storage.o storage.c

logic.o : logic.c defs.h
    cc -c -o logic.o logic.c

.PHONY : promote clean reallyclean

promote : server
    cp server /staging/new_servers

clean : 
    rm -f *.o

reallyclean : clean
    rm -f server

And I do the following sequence of commands

make server # builds ther server from source
make clean  # tidies up the .o files
make promote # send the built server to the staging area

make, not unsurprisingly, re-builds the server from scratch, as the .o files are dependencies of server and are missing.

I do want this to happen if the server file itself is not there (there'd be nothing to promote otherwise) but if there is a server and no .o files then I want make to assume that the server is up-to-date and to promote it.

Is this achievable?

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1 回答 1

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啊，明白了！

使用 .SECONDARY 或 .INTERMEDIATE 标记所有我想忽略的中间体，例如添加：

.SECONDARY : network.o storage.o logic.o

（我已经尝试过这些，但在我的实际解决方案中，我有一个被忽略的中间体依赖于一个非忽略的中间体，所以 make 仍在重建所谓的被忽略的中间体，因此重建了服务器。）

于 2013-01-29T16:55:18.127 回答