Federico Bruni writes: > > > Il giorno gio 29 mar 2018 alle 18:18, th...@vmware.com ha scritto: > > Federico Bruni writes: > > > > > > > > > Il giorno gio 29 mar 2018 alle 15:56, Paul Smith <psm...@gnu.org> > > ha > > > scritto: > > > > On Thu, 2018-03-29 at 14:09 +0200, Federico Bruni wrote: > > > >> VPATH = \ > > > >> $CURDIR/src > > > > > > > > This is wrong. This expands the make variable $C and appends the > > > > string "URDIR/src". Since C is not set (most likely) you'll get: > > > > > > > > VPATH = URDIR/src > > > > > > > > which doesn't exist, so this is a no-op. > > > > > > > > You meant: > > > > > > > > VPATH = $(CURDIR)/src > > > > > > Yes, indeed, it's an oversight. > > > > Here's one way that VPATH can be used, with your original directory > > structure. The example is a bit convoluted. A recursive Make > > invocation is done to make the working directory be the 'out' > > directory. The VPATH allows the sources to be found in the 'src' > > directory: > > > > export ROOT ?= $(shell pwd) > > VPATH = $(ROOT)/src > > MD = $(wildcard $(ROOT)/src/*.md) > > PDF = $(addsuffix .pdf, $(notdir $(basename $(MD)))) > > > > %.pdf: %.md > > echo pandoc -f markdown -o $@ $<; \ > > touch $@; > > > > all: > > $(MAKE) -C $(ROOT)/out -f $(ROOT)/$(lastword > > $(MAKEFILE_LIST)) book > > > > book: $(PDF) > > > > This works, thank you! > > I see that here you use pwd because Make enters the out directory, so > $(CURDIR) is not the best choice. >
My preference would be to not use 'shell' to set ROOT. I did that for example purposes. If I was doing this for myself or for my employer, I would require ROOT to be set before the Makefile was executed. One concrete reason for being that setting ROOT using 'pwd' will not work properly if one does: cd /tmp; make -f ~/source/pdf-project/Makefile thutt -- Answering "How do we solve this problem?" should not create more problems. _______________________________________________ Help-make mailing list Help-make@gnu.org https://lists.gnu.org/mailman/listinfo/help-make
