Index: Makefile
--- Makefile.orig	2018-01-28 09:29:31.960766000 +0100
+++ Makefile	2018-01-28 09:29:44.176929000 +0100
@@ -339,10 +339,6 @@
 .PHONY: tags
 
 tags:
-	-if [ -f "`which $(ETAGS)`" ]; then \
-	    $(ETAGS) *.mli */*.mli *.ml */*.ml */*.m *.c */*.c *.txt \
-	             *Makefile* \
-          ; fi 
 
 all:: TAGS