diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 6f89ae2b4e..8a35495b24 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,9 @@
+Wed Mar  1 12:17:31 1995  Michael Meissner  <meissner@cygnus.com>
+
+	* ch-exp.y, c-exp.y, f-exp.y, m2-exp.y (yy defines): Support the
+	standard Linux yacc by adding more names to be redefined with a
+	prefix.
+
 Tue Feb 28 22:55:47 1995  Jim Kingdon  (kingdon@lioth.cygnus.com)
 
 	* hppa-tdep.c (pa_print_registers), monitor.c: Use
diff --git a/gdb/c-exp.y b/gdb/c-exp.y
index fc88cab4b5..77816afb81 100644
--- a/gdb/c-exp.y
+++ b/gdb/c-exp.y
@@ -84,6 +84,15 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
 #define	yylloc	c_lloc
 #define yyreds	c_reds		/* With YYDEBUG defined */
 #define yytoks	c_toks		/* With YYDEBUG defined */
+#define yylhs	c_yylhs
+#define yylen	c_yylen
+#define yydefred c_yydefred
+#define yydgoto	c_yydgoto
+#define yysindex c_yysindex
+#define yyrindex c_yyrindex
+#define yygindex c_yygindex
+#define yytable	 c_yytable
+#define yycheck	 c_yycheck
 
 #ifndef YYDEBUG
 #define	YYDEBUG	0		/* Default to no yydebug support */
diff --git a/gdb/ch-exp.y b/gdb/ch-exp.y
index 98e890d9d3..62719a26b2 100644
--- a/gdb/ch-exp.y
+++ b/gdb/ch-exp.y
@@ -101,6 +101,15 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
 #define	yylloc	chill_lloc
 #define	yyreds	chill_reds		/* With YYDEBUG defined */
 #define	yytoks	chill_toks		/* With YYDEBUG defined */
+#define yylhs	chill_yylhs
+#define yylen	chill_yylen
+#define yydefred chill_yydefred
+#define yydgoto	chill_yydgoto
+#define yysindex chill_yysindex
+#define yyrindex chill_yyrindex
+#define yygindex chill_yygindex
+#define yytable	 chill_yytable
+#define yycheck	 chill_yycheck
 
 #ifndef YYDEBUG
 #define	YYDEBUG	0		/* Default to no yydebug support */
diff --git a/gdb/f-exp.y b/gdb/f-exp.y
index 741d76c227..71a219d159 100644
--- a/gdb/f-exp.y
+++ b/gdb/f-exp.y
@@ -89,6 +89,15 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
 #define	yylloc	f_lloc
 #define yyreds	f_reds		/* With YYDEBUG defined */
 #define yytoks	f_toks		/* With YYDEBUG defined */
+#define yylhs	f_yylhs
+#define yylen	f_yylen
+#define yydefred f_yydefred
+#define yydgoto	f_yydgoto
+#define yysindex f_yysindex
+#define yyrindex f_yyrindex
+#define yygindex f_yygindex
+#define yytable	 f_yytable
+#define yycheck	 f_yycheck
 
 #ifndef YYDEBUG
 #define	YYDEBUG	1		/* Default to no yydebug support */
diff --git a/gdb/m2-exp.y b/gdb/m2-exp.y
index 81d791ccbb..51cdfceb01 100644
--- a/gdb/m2-exp.y
+++ b/gdb/m2-exp.y
@@ -86,6 +86,15 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
 #define	yylloc	m2_lloc
 #define	yyreds	m2_reds		/* With YYDEBUG defined */
 #define	yytoks	m2_toks		/* With YYDEBUG defined */
+#define yylhs	m2_yylhs
+#define yylen	m2_yylen
+#define yydefred m2_yydefred
+#define yydgoto	m2_yydgoto
+#define yysindex m2_yysindex
+#define yyrindex m2_yyrindex
+#define yygindex m2_yygindex
+#define yytable	 m2_yytable
+#define yycheck	 m2_yycheck
 
 #ifndef YYDEBUG
 #define	YYDEBUG	0		/* Default to no yydebug support */