--- UDUNITS/1.12.11/GCCcore-10.2.0/udunits-1.12.11/src/lib/Makefile.in.orig	2020-12-09 13:16:13.732167939 +0100
+++ UDUNITS/1.12.11/GCCcore-10.2.0/udunits-1.12.11/src/lib/Makefile.in		2020-12-09 13:14:48.085498580 +0100
@@ -60,11 +60,11 @@
 # with other parsers).
 #
 utparse.c:	utparse.y
-	yacc -b utparse -d -p ut utparse.y
+	yacc -b utparse -d -p ut utparse.y -Wconflicts-sr -Wcounterexamples
 	cat utparse.tab.c > $@
 	rm utparse.tab.c
 	cat utparse.tab.h > utparse.h
-	rm utparse.tab.h
+#	rm utparse.tab.h
 
 #	case `uname -s` in \
 #	OSF1) \