Makefile to process all Asciidoctor files in a directory

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Author: Christoph Stoettner
Read in about 2 min · 261 words

Fountain pen and a notebook

Photo by Aaron Burden | Unsplash

I write most of my documents (blog posts, documentation, recipes and so on) with Asciidoctor . Everything is organized in Git repositories.

During GPN 19 (Gulaschprogrammiernacht) I showed how to build html and pdf with a Gitlab CI/CD pipeline . That’s quite handy, but lots of documents I build, I just need locally.

So today I played with WSL2 and a Makefile to build all Asciidoctor files in a directory.

Commandline to make pdf

asciidoctor-pdf source.adoc -o build/source.pdf

This builds a pdf in the directory build, but how can we create a pdf of some files?

Makefile

docs = $(wildcard *.adoc)            
pdfs = $(docs:.adoc=.pdf)            
all: $(pdfs)                         
.PHONY: all

# Call asciidoctor to generate $@ from $^
%.pdf: %.adoc
    asciidoctor-pdf $^ -o build/$@     
  • Wildcard of all files with extension adoc in this directory

  • Map .pdf instead of .adoc

  • Run on all targets

  • $@ is the PDF-File,
    $^ is the Source

So just running make will create all documents converted in pdf.

Extend the Makefile

Create all documents converted to html and pdf in extra folders. Add commandline option variable.

Makefile

docs := $(wildcard *.adoc)
pdfs := $(docs:.adoc=.pdf)
htmls := $(docs:.adoc=.html)
options := -a toc -a toclevels="1"
all: html pdf
pdf: $(pdfs)
html: $(htmls)
.PHONY: all pdf html

# Call asciidoctor to generate $@ from $^
%.pdf: %.adoc
    asciidoctor-pdf $^ $(options) -o build/pdf/$@

%.html: %.adoc
    asciidoctor $^ $(options) -o build/html/$@

So now running make creates html and pdf targets.

Example with our recipe collection

Tree with source and target files

You can use this Makefile on Linux, Mac OS or Windows (with WSL) to convert a large scale of Asciidoctor files to your target.

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