Re: Expand % in wildcard function

[Paul D. Smith]

%% address@hidden writes:

  d> Citeren Mike Gibson <address@hidden>:

  >> > What should I do to expand the % in the wildcard function?

  >> Like Paul said, you can't.  But there is a way to do it.  Use
  >> $(eval ...)  from version 3.80 and above.

  d> Thank you all for your replies. I tried this:

  d> define genalldocs
  d> xsl/alldocs_$(1).xsl: genalldocs.php $(wildcard $(DOCS)/$(1)/*.xml)
  d>    ${PHP} php/genalldocs.php $(CURDIR)/$(DOCS)/$(1)/ >$@

  d> endef

  d> $(call genalldocs,l)
  d> $(call genalldocs,k)
  d> $(call genalldocs,a)

Well, this can't work because you are not using $(eval ...)... As Mike
said you have to use $(eval ...).  You also have to escape some things.

I would do something like this instead:

  xsl/alldocs_%.xsl: php/genalldocs.php
        ${PHP} $< $(CURDIR)/$(DOCS)/$*/ > $@

  xsl/alldocs_l.xsl: $(wildcard $(DOCS)/l/*.xml)
  xsl/alldocs_k.xsl: $(wildcard $(DOCS)/k/*.xml)
  xsl/alldocs_a.xsl: $(wildcard $(DOCS)/a/*.xml)

Then you don't even need eval.  If you really want to do this in a loop
or something then you _would_ need eval:

  xsl/alldocs_%.xsl: php/genalldocs.php
        ${PHP} $< $(CURDIR)/$(DOCS)/$*/ > $@

  define genalldocs
  xsl/alldocs_$(1).xsl: genalldocs.php $$(wildcard $(DOCS)/$(1)/*.xml)
  endef

  DOCDIRS = l k a

  $(foreach D,$(DOCDIRS),$(eval $(call genalldocs,$(D))))

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