Date: Fri, 22 Apr 2005 19:23:33 -0600 (MDT) From: "M. Warner Losh" <imp@bsdimp.com> To: marcel@xcllnt.net Cc: cvs-all@FreeBSD.org Subject: Re: cvs commit: src/usr.sbin/config main.c Message-ID: <20050422.192333.91757691.imp@bsdimp.com> In-Reply-To: <94969eabff134918730e7dcead17bb51@xcllnt.net> References: <b01a40ad14d2fadd7fa857af2495dfdd@xcllnt.net> <20050422203437.GB50191@ip.net.ua> <94969eabff134918730e7dcead17bb51@xcllnt.net>
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In message: <94969eabff134918730e7dcead17bb51@xcllnt.net> Marcel Moolenaar <marcel@xcllnt.net> writes: : On Apr 22, 2005, at 1:34 PM, Ruslan Ermilov wrote: : : >>> I personally fail to see how this can be solved... :-( : >> : >> Ok, what about this: : >> mkdep(1) creates lines of the form : >> : >> foo.o: foo.c inc1.h inc2.h : >> : >> Would this problem be solved if mkdep(1) created lines like: : >> : >> foo.o .depend: foo.c inc1.h inc2.h : >> : >> or equivalent? : >> : >> Would something else break if we do that? : >> : > I fail to see what this gives us, except for also breaking : > "make .depend" when .depend is present and inc2.h disappears. : : True, there is a phase ordering problem. But isn't that something : that can be worked around by making the necessary adjustments to : make(1). The adjustments would be that if .depend is out of : date, it is being made without making any sources that are out : of date (or missing). This may require adding a special source : to the mix of special sources that make(1) already has: .SOFTDEP : or something like that. One can also hardcode this special case, : but that seems ugly. Looks like Justin's changes just make the problem worse. It make the make depend fail, where before it would just fail to generate a new .depend file. The only thing that has a chance of working would be something like: ALLDEPENDS=<generated by mkdep and is the union of all the files on the right hand side of the :> beforebeforedepend: .for __i in ${ALLDEPENDS} .if !exists($__i) F := $F $__i .endif .endfor .if !empty($F) rm -f .depend .endif and then add beforebeforedepend before beforedepend and adjust the ordering rules accordingly. Make could be modified to have exists take a list of files and return true iff they all exist... Warner
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