Hi, Thanks for looking into this Eddy!
The behavior depends on the VPATH directory order e.g. VPATH = a b, mv a => b does not work VPATH = a b, mv b => a works correct VPATH = b a, mv b => a works VPATH = b a, mv a => b does not work To illustrate this better the script attached in the bug-report was modified to use the method for dependency file generation described at http://make.paulandlesley.org/autodep.html. %.o : %.c $(COMPILE.c) -MD -o $@ $< @cp $*.d $*.P; \ sed -e 's/#.*//' -e 's/^[^:]*: *//' -e 's/ *\\$$//' \ -e '/^$$/ d' -e 's/$$/ :/'< $*.d>> $*.P; \ rm -f $*.d So either VPATH or dependency generation does not work properly. Cheers, Joachim -----Original Message----- From: ext Edward Welbourne [mailto:e...@opera.com] Sent: Thursday, June 09, 2011 9:48 AM To: Bauernberger, Joachim (EXT-Other - DE/Ulm) Cc: bug-make@gnu.org Subject: Re: VPATH file rename is not detected by $< I got lost in your perl script, so may have missed something; but it *looks* as if what's happening is that your .d.cmd file records the prior path of what was $< on your previous run; so the .o file depends on that (as well as the newly renamed file that's $<) and this is the problem, not the fact that $< is missing. I suspect (although I'm no expert on VPATH) that the fix for this is for your perl script to strip, from each prerequisite listed in the *.d file, any prefix that's present in VPATH. Then the .d.cmd file will list paths relative to VPATH and the VPATH machinery shall take care of things moving among its directories. Eddy. _______________________________________________ Bug-make mailing list Bug-make@gnu.org https://lists.gnu.org/mailman/listinfo/bug-make
