diff --git a/doc/Makefile b/doc/Makefile
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index 0000000000000000000000000000000000000000..fc4770bbf7f376ee8f727c8c9f0f1bceb77ba6e8
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+++ b/doc/Makefile
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+## GNU makefile for opusfile documentation.
+
+all: doxygen
+
+doxygen: Doxyfile ../include/opusfile.h
+	doxygen
+
+pdf: doxygen
+	make -C latex
+
+clean:
+	$(RM) -r html
+	$(RM) -r latex
+
+.PHONY: all clean doxygen