--- lib/DtMmdb/StyleSheet/Makefile.am.orig	2022-02-15 09:36:38.828203000 -0800
+++ lib/DtMmdb/StyleSheet/Makefile.am	2022-02-15 10:20:50.149152000 -0800
@@ -41,14 +41,14 @@
 	     tokenStyle.C
 
 defParser.C: defParser.yy
-	$(YACC) $(AM_YFLAGS) -p defParser -b defParser $<
+	$(YACC) $(AM_YFLAGS) -o defParser.tab.c -p defParser -b defParser $<
 	mv defParser.tab.c $@
 
 defToken.C: defToken.ll
 	$(LEX) $(AM_LFLAGS) -P defParser -o $@ $<
 
 style.C: style.yy
-	$(YACC) $(AM_YFLAGS) -p style -b style $<
+	$(YACC) $(AM_YFLAGS) -o style.tab.c -p style -b style $<
 	mv style.tab.c style.C
 
 tokenStyle.C: tokenStyle.ll