Makefile for processing Mermaid files in the current directory

Makefile

# Makefile for Mermaid files in this directory
#
# `make all`         - build all targets
# `make png`         - build PNGs for all source files
# `make svg`         - build SVGs for all source files
# `make pdf`         - build PDFs for all source files
# `make clean`       - delete all targets
# `make listsources` - print list of all files to be processed
# `make listtargets` - print list of all output files

# `brew install mermaid-cli` to get the `mmdc` utility.
MMDC?=mmdc
MMDCFLAGS?=

%.png : %.mmd
	$(MMDC) --input $< --output $@ $(MMDCFLAGS)
%.svg : %.mmd
	$(MMDC) --input $< --output $@ $(MMDCFLAGS)
%.pdf : %.mmd
	$(MMDC) --input $< --output $@ $(MMDCFLAGS) --pdfFit

# Process all *.mmd files in this directory, producing .png and .svg output.
MMD_SRC_FILES=$(wildcard *.mmd)
MMD_OUT_FILES=$(MMD_SRC_FILES:.mmd=.png) $(MMD_SRC_FILES:.mmd=.svg) $(MMD_SRC_FILES:.mmd=.pdf)

all: $(MMD_OUT_FILES)
.PHONY: all

png: $(MMD_SRC_FILES:.mmd=.png)
.PHONY: png

svg: $(MMD_SRC_FILES:.mmd=.svg)
.PHONY: svg

pdf: $(MMD_SRC_FILES:.mmd=.pdf)
.PHONY: pdf

listsources:
	@ echo $(MMD_SRC_FILES)
.PHONY: listsources

listtargets:
	@ echo $(MMD_OUT_FILES)
.PHONY: listtargets

clean:
	- $(RM) $(MMD_OUT_FILES)
.PHONY: clean