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-rw-r--r--doc/Makefile7
1 files changed, 5 insertions, 2 deletions
diff --git a/doc/Makefile b/doc/Makefile
index fa8d38d..4065f5a 100644
--- a/doc/Makefile
+++ b/doc/Makefile
@@ -8,12 +8,15 @@ all: breaking_rules.pdf breaking_rules.html
 # Use stuff beyond that only where absolutely necessary.
 # Similar to code, YAGNI.
 
-breaking_rules.pdf: breaking_rules.md refs
+breaking_rules.pdf: breaking_rules.md refs.i
 	lowdown -sTms breaking_rules.md | pdfroff -i -t -R -mspdf -k -Kutf8 > $@
 
-breaking_rules.html: breaking_rules.md refs
+breaking_rules.html: breaking_rules.md refs.i
 	lowdown -sTms breaking_rules.md | groff -Thtml -i -t -R -ms -k -Kutf8 > $@
 
+refs.i: refs
+	indxbib $^
+
 .PHONY: clean
 clean:
 	$(RM) breaking_rules.pdf