Re: exception to Paul's Second Rule?

[Noel Yap]

Robert Mecklenburg wrote:
> %.o: %.c %.mkdir
> 
> So I was thinking the target would be, say, "out/bar.o".  Now, with the
> "slow" version it has prereq of "out/bar.mkdir" (In the slow version we omit
> the .. path component.)  Then the command script executes:
> 
>     @mkdir -p $(dir out/bar.mkdir)
>     @touch out/bar.mkdir

I see.  Doing this would create one directory per object file (something not 
entirely incorrect, but still kind messy) and would still have a race condition 
when using --jobs.

Noel
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