On Mon, 19 Feb 2001, Paul D. Smith wrote:
> There are some notes about this in the GNU make manual.
>
> mf> One approach is to use .PHONY subdirectories as targets
>
> This is the right approach.
In what section? Phony targets?
Are you suggesting
SUBDIRS:=A B
PROGS:=$(SUBDIRS:%=prog%)
LIBS:=$(SUBDIRS:%=lib%)
TARGET=null
prog: $(PROGS)
$(PROGS): $(LIBS)
lib: $(LIBS)
$(PROGS): TARGET=prog
$(LIBS): TARGET=lib
$(LIBS) $(PROGS):
@test -d $(@:$(TARGET)%=%) || mkdir $(@:$(TARGET)%=%)
$(MAKE) -C $(@:$(TARGET)%=%) $(TARGET)
.PHONY: $(LIBS) $(PROGS) lib prog
or what? By the way, this works, but it is breaking your rule that nothing
should build anything that is named in any other way than itself, I could
get to use targets named A and B for building the directories but I wold
then have to generate dependencies forthem, and that would be horrible
since they are turned in response to $(LIBS) and $(PROGS).
If I use one target name for the active part then the second pass will
never be done since it is assumed to be already done.
> Try $(MAKECMDGOALS).
I still can't see how MAKECMDGOALS could help me in this situation.
Additionally there is the problem of how to make a build from a different
directory work but that I can think about later.
Oh yes, your .signature is quite informative, it points to some really
good pages.
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