Using wildcard in GNU Make pattern rule
The GNU Make function wildcard
takes a shell globbing pattern and expands it to the files matching that pattern. The pattern %.refer
does not contain any shell globbing patterns.
You probably want something like
%.pdf: %.mom %.refer
pdfmom -e -k < $< > $@
%.pdf: %.mom
pdfmom -e -k < $< > $@
The first target will be invoked for making PDF files when there's a .mom
and a .refer
file available for the base name of the document. The second target will be invoked when there isn't a .refer
file available.
The order of these targets is important.