diff --git a/Makefile.am b/Makefile.am
index a7936ed..d5670a9 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -16,5 +16,12 @@ coverage-html:
 	-$(MAKE) -C tests $(AM_MAKEFLAGS) -k $@
 endif
 
+REGEX_CCLASS=/^[ \t]*\(TR_CLASS\|TR_INTERFACE\)\(([a-zA-Z0-9_]+)/\2/d,definition/
 tags:
-	ctags -R -V --langdef=cclass --langmap=cclass:.h --regex-cclass='/^[ \t]*\(TR_CLASS\|TR_INTERFACE\)\(([a-zA-Z0-9_]+)/\2/d,definition/'
+	@ctags -R -V --langdef=cclass --langmap=cclass:.h \
+		--regex-cclass='$(REGEX_CCLASS)'
+
+loc:
+	@find src/ include/ -not -path testers -and -name "*.[ch]" \
+		-exec sed '/\/\*/,/\*\//d;/\/\//d' {} \; | wc -l
+