Add automatic handout compilation to Makefile

.gitignore

@@ -1 +1,5 @@
 build/
+
+src/*/.latexmkrc
+src/*/lib
+src/*/src

Makefile

@@ -1,11 +1,21 @@
-all:
-	mkdir -p build/build
+PRESENTATIONS := $(patsubst src/%/presentation.tex,build/presentation_%.pdf,$(wildcard src/*/presentation.tex))
+HANDOUTS := $(patsubst build/presentation_%.pdf,build/presentation_%_handout.pdf,$(PRESENTATIONS))
 
-	TEXINPUTS=./lib/cel-slides-template-2025:$$TEXINPUTS latexmk src/template/presentation.tex
-	mv build/presentation.pdf build/presentation_template.pdf
+.PHONY: all
+all: $(PRESENTATIONS) $(HANDOUTS)
 
-	TEXINPUTS=./lib/cel-slides-template-2025:$$TEXINPUTS latexmk src/2025-11-07/presentation.tex
-	mv build/presentation.pdf build/presentation_2025-11-07.pdf
+build/presentation_%.pdf: src/%/presentation.tex build/prepared
+	TEXINPUTS=./lib/cel-slides-template-2025:$$TEXINPUTS latexmk $<
+	mv build/presentation.pdf $@
+
+build/presentation_%_handout.pdf: src/%/presentation.tex build/prepared
+	TEXINPUTS=./lib/cel-slides-template-2025:$$TEXINPUTS latexmk -pdflatex='pdflatex %O "\def\ishandout{1}\input{%S}"' $<
+	mv build/presentation.pdf $@
+
+build/prepared:
+	mkdir -p build
+	touch build/prepared
+
+.PHONY: clean
 clean:
 	rm -rf build
-

src/2025-11-07/presentation.tex

@@ -1,4 +1,8 @@
-\documentclass[de]{CELbeamer}
+\ifdefined\ishandout
+  \documentclass[de, handout]{CELbeamer}
+\else
+  \documentclass[de]{CELbeamer}
+\fi
 
 %
 %

src/template/presentation.tex

@@ -1,4 +1,8 @@
-\documentclass[de]{CELbeamer}
+\ifdefined\ishandout
+  \documentclass[de, handout]{CELbeamer}
+\else
+  \documentclass[de]{CELbeamer}
+\fi
 
 %
 %