Re: [PATCH] fix parallel make problem
From: Junio C Hamano <hidden>
Date: 2016-06-15 22:43:31
"Michael S. Tsirkin" [off-list ref] writes:
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Quoting Junio C Hamano [off-list ref]: Subject: Re: [PATCH] fix parallel make problem "Michael S. Tsirkin" [off-list ref] writes:quoted
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+.PRECIOUS: $(patsubst test-%$X,test-%.o,$(TEST_PROGRAMS)) + test-%$X: test-%.o $(GITLIBS) $(QUIET_LINK)$(CC) $(ALL_CFLAGS) -o $@ $(ALL_LDFLAGS) $(filter %.o,$^) $(LIBS)Add a comment here?I did not see a particular need for that. What would you say there?That it's a work-around for make bug.
I would agree it is a make bug to barf like what we saw. Even though we allowed it to treat test-%.o files as intermediate products and allowed them to be removed, it is not a good excuse for make to forget rebuilding them. But I also happen to think not marking test-%.o as precious was a bug on our side. We would want to keep the build by-product to avoid recompilation, don't we? And this additional line is primarily about fixing that bug, which works the bug around as a side effect.
So how did this end up in your mail?
Because it is not a format-patch output. I often run "git diff --stat -p HEAD" from inside MUA in order to get the patch from my work tree, write a proposed commit message, and then reset the change away without committing after sending that message (yes I do not need "git stash" --- gmane and vger are my stashes, Mwhhhaaaa).