Makefile: build MV 2019 and MV 2020 as subdirs

These dirs already have quite complex Makefiles, which can also be used
standalone.

mv-protokolle/Makefile

@@ -11,11 +11,15 @@ JOBNAMES=$(basename $(SRCS))
 PDFS=$(addsuffix .pdf,$(JOBNAMES))
 LATESTJOB=$(basename $(shell ls -1t $(SRCS) | head -n 1))
 
+SUBDIRS=\
+	Mitgliederversammlung_2019-01-20 \
+	Mitgliederversammlung_2020-01-26 \
+
 define latexmk
 latexmk -pdf -dvi- -ps-
 endef
 
-all: $(PDFS)
+all: $(PDFS) $(SUBDIRS)
 
 help:
 	@echo "Available make targets:"
@@ -60,4 +64,11 @@ vc.tex: ../.git/index ../.git/HEAD ../scripts/vc ../scripts/vc-git.awk
 	cd $$(dirname "$<") && \
 	$(latexmk) $(if $(PVC),-pvc,-pvc-) $$(basename "$<")
 
+.PHONY: $(SUBDIRS)
+define build_subdirs
+$d:
+	make -C $d
+endef
+$(foreach d,$(SUBDIRS),$(eval $(build_subdirs)))
+
 # vim: ft=make ts=8 noet

mv-protokolle/Mitgliederversammlung_2019-01-20/Makefile

@@ -11,13 +11,16 @@ pandoc = pandoc -f markdown+grid_tables -i $< -s -t $(1) -o $@ $(2)
 
 all: $(OBJ)
 
-../../.git/modules/latex/: ../../.gitmodules
-	git submodule update --init
-
-s0artcl.cls s0minutes.cls: ../../.git/modules/latex/
-	cd latex && make
-	rm -f $@ && ln -s $(patsubst %,latex/%,$@) .
-	touch $@
+stratum0-latex/stratum0-latex.ins: ../../.gitmodules
+	if [ ! -h stratum0-latex ]; then \
+		git submodule update --init ; \
+		ln -s ../stratum0-latex/ . ; \
+	fi
+
+s0artcl.cls s0minutes.cls: stratum0-latex/stratum0-latex.ins stratum0-latex/s0artcl.dtx stratum0-latex/s0minutes.dtx stratum0-latex/stratum0-latex.ins
+	${MAKE} -C stratum0-latex
+	if [ ! -h s0artcl.cls   ]; then ln -s stratum0-latex/s0artcl.cls   . ; fi
+	if [ ! -h s0minutes.cls ]; then ln -s stratum0-latex/s0minutes.cls . ; fi
 
 %.pdf: %.latex s0minutes.cls s0artcl.cls
 	pdflatex $< \

mv-protokolle/Mitgliederversammlung_2019-01-20/s0artcl.cls

-../stratum0-latex/s0artcl.cls
\ No newline at end of file
+stratum0-latex/s0artcl.cls
\ No newline at end of file

mv-protokolle/Mitgliederversammlung_2019-01-20/s0minutes.cls

-../stratum0-latex/s0minutes.cls
\ No newline at end of file
+stratum0-latex/s0minutes.cls
\ No newline at end of file