diff --git a/poky/meta/recipes-extended/groff/files/0001-Include-config.h.patch b/poky/meta/recipes-extended/groff/files/0001-Include-config.h.patch
index 348a61d..46065bc 100644
--- a/poky/meta/recipes-extended/groff/files/0001-Include-config.h.patch
+++ b/poky/meta/recipes-extended/groff/files/0001-Include-config.h.patch
@@ -17,6 +17,9 @@
   ^
 ./lib/math.h:40:1: error: unknown type name '_GL_INLINE_HEADER_BEGIN'
 
+We delete eqn.cpp and qen.hpp in do_configure
+to ensure they're regenerated and deterministic.
+
 Upstream-Status: Pending
 Signed-off-by: Khem Raj <raj.khem@gmail.com>
 ---
@@ -140,1029 +143,6 @@
  #include <string.h>
  #include <stdlib.h>
  
-diff --git a/src/preproc/eqn/eqn.cpp b/src/preproc/eqn/eqn.cpp
-index 4ede465..fdd9484 100644
---- a/src/preproc/eqn/eqn.cpp
-+++ b/src/preproc/eqn/eqn.cpp
-@@ -1,8 +1,9 @@
--/* A Bison parser, made by GNU Bison 3.2.  */
-+/* A Bison parser, made by GNU Bison 3.4.1.  */
- 
- /* Bison implementation for Yacc-like parsers in C
- 
--   Copyright (C) 1984, 1989-1990, 2000-2015, 2018 Free Software Foundation, Inc.
-+   Copyright (C) 1984, 1989-1990, 2000-2015, 2018-2019 Free Software Foundation,
-+   Inc.
- 
-    This program is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-@@ -47,7 +48,7 @@
- #define YYBISON 1
- 
- /* Bison version.  */
--#define YYBISON_VERSION "3.2"
-+#define YYBISON_VERSION "3.4.1"
- 
- /* Skeleton name.  */
- #define YYSKELETON_NAME "yacc.c"
-@@ -65,7 +66,11 @@
- 
- 
- /* First part of user prologue.  */
--#line 18 "../src/preproc/eqn/eqn.ypp" /* yacc.c:338  */
-+#line 18 "src/preproc/eqn/eqn.ypp"
-+
-+#if HAVE_CONFIG_H
-+# include <config.h>
-+#endif
- 
- #include <stdio.h>
- #include <string.h>
-@@ -77,7 +82,8 @@ extern int non_empty_flag;
- int yylex();
- void yyerror(const char *);
- 
--#line 81 "src/preproc/eqn/eqn.cpp" /* yacc.c:338  */
-+#line 86 "src/preproc/eqn/eqn.cpp"
-+
- # ifndef YY_NULLPTR
- #  if defined __cplusplus
- #   if 201103L <= __cplusplus
-@@ -98,8 +104,8 @@ void yyerror(const char *);
- # define YYERROR_VERBOSE 0
- #endif
- 
--/* In a future release of Bison, this section will be replaced
--   by #include "y.tab.h".  */
-+/* Use api.header.include to #include this header
-+   instead of duplicating it here.  */
- #ifndef YY_YY_SRC_PREPROC_EQN_EQN_HPP_INCLUDED
- # define YY_YY_SRC_PREPROC_EQN_EQN_HPP_INCLUDED
- /* Debug traces.  */
-@@ -237,10 +243,9 @@ extern int yydebug;
- 
- /* Value type.  */
- #if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
--
- union YYSTYPE
- {
--#line 30 "../src/preproc/eqn/eqn.ypp" /* yacc.c:353  */
-+#line 34 "src/preproc/eqn/eqn.ypp"
- 
- 	char *str;
- 	box *b;
-@@ -249,9 +254,9 @@ union YYSTYPE
- 	int n;
- 	column *col;
- 
--#line 253 "src/preproc/eqn/eqn.cpp" /* yacc.c:353  */
--};
-+#line 258 "src/preproc/eqn/eqn.cpp"
- 
-+};
- typedef union YYSTYPE YYSTYPE;
- # define YYSTYPE_IS_TRIVIAL 1
- # define YYSTYPE_IS_DECLARED 1
-@@ -366,6 +371,8 @@ typedef short yytype_int16;
- #endif
- 
- 
-+#define YY_ASSERT(E) ((void) (0 && (E)))
-+
- #if ! defined yyoverflow || YYERROR_VERBOSE
- 
- /* The parser invokes alloca or malloc; define the necessary symbols.  */
-@@ -508,16 +515,16 @@ union yyalloc
- /* YYNSTATES -- Number of states.  */
- #define YYNSTATES  142
- 
--/* YYTRANSLATE[YYX] -- Symbol number corresponding to YYX as returned
--   by yylex, with out-of-bounds checking.  */
- #define YYUNDEFTOK  2
- #define YYMAXUTOK   315
- 
-+/* YYTRANSLATE(TOKEN-NUM) -- Symbol number corresponding to TOKEN-NUM
-+   as returned by yylex, with out-of-bounds checking.  */
- #define YYTRANSLATE(YYX)                                                \
-   ((unsigned) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK)
- 
- /* YYTRANSLATE[TOKEN-NUM] -- Symbol number corresponding to TOKEN-NUM
--   as returned by yylex, without out-of-bounds checking.  */
-+   as returned by yylex.  */
- static const yytype_uint8 yytranslate[] =
- {
-        0,     2,     2,     2,     2,     2,     2,     2,     2,    63,
-@@ -558,14 +565,14 @@ static const yytype_uint8 yytranslate[] =
-   /* YYRLINE[YYN] -- Source line where rule number YYN was defined.  */
- static const yytype_uint16 yyrline[] =
- {
--       0,   121,   121,   123,   128,   130,   141,   143,   145,   150,
--     152,   154,   156,   158,   163,   165,   167,   169,   174,   176,
--     181,   183,   185,   190,   192,   194,   196,   198,   200,   202,
--     204,   206,   208,   210,   212,   214,   216,   218,   220,   222,
--     224,   226,   228,   230,   232,   234,   236,   238,   240,   242,
--     244,   246,   248,   250,   252,   254,   259,   269,   271,   276,
--     278,   283,   285,   290,   292,   297,   299,   304,   306,   308,
--     310,   314,   316,   321,   323,   325
-+       0,   125,   125,   127,   132,   134,   145,   147,   149,   154,
-+     156,   158,   160,   162,   167,   169,   171,   173,   178,   180,
-+     185,   187,   189,   194,   196,   198,   200,   202,   204,   206,
-+     208,   210,   212,   214,   216,   218,   220,   222,   224,   226,
-+     228,   230,   232,   234,   236,   238,   240,   242,   244,   246,
-+     248,   250,   252,   254,   256,   258,   263,   273,   275,   280,
-+     282,   287,   289,   294,   296,   301,   303,   308,   310,   312,
-+     314,   318,   320,   325,   327,   329
- };
- #endif
- 
-@@ -818,22 +825,22 @@ static const yytype_uint8 yyr2[] =
- 
- #define YYRECOVERING()  (!!yyerrstatus)
- 
--#define YYBACKUP(Token, Value)                                  \
--do                                                              \
--  if (yychar == YYEMPTY)                                        \
--    {                                                           \
--      yychar = (Token);                                         \
--      yylval = (Value);                                         \
--      YYPOPSTACK (yylen);                                       \
--      yystate = *yyssp;                                         \
--      goto yybackup;                                            \
--    }                                                           \
--  else                                                          \
--    {                                                           \
--      yyerror (YY_("syntax error: cannot back up")); \
--      YYERROR;                                                  \
--    }                                                           \
--while (0)
-+#define YYBACKUP(Token, Value)                                    \
-+  do                                                              \
-+    if (yychar == YYEMPTY)                                        \
-+      {                                                           \
-+        yychar = (Token);                                         \
-+        yylval = (Value);                                         \
-+        YYPOPSTACK (yylen);                                       \
-+        yystate = *yyssp;                                         \
-+        goto yybackup;                                            \
-+      }                                                           \
-+    else                                                          \
-+      {                                                           \
-+        yyerror (YY_("syntax error: cannot back up")); \
-+        YYERROR;                                                  \
-+      }                                                           \
-+  while (0)
- 
- /* Error token number */
- #define YYTERROR        1
-@@ -948,7 +955,7 @@ yy_reduce_print (yytype_int16 *yyssp, YYSTYPE *yyvsp, int yyrule)
-       YYFPRINTF (stderr, "   $%d = ", yyi + 1);
-       yy_symbol_print (stderr,
-                        yystos[yyssp[yyi + 1 - yynrhs]],
--                       &(yyvsp[(yyi + 1) - (yynrhs)])
-+                       &yyvsp[(yyi + 1) - (yynrhs)]
-                                               );
-       YYFPRINTF (stderr, "\n");
-     }
-@@ -1052,7 +1059,10 @@ yytnamerr (char *yyres, const char *yystr)
-           case '\\':
-             if (*++yyp != '\\')
-               goto do_not_strip_quotes;
--            /* Fall through.  */
-+            else
-+              goto append;
-+
-+          append:
-           default:
-             if (yyres)
-               yyres[yyn] = *yyp;
-@@ -1148,10 +1158,10 @@ yysyntax_error (YYSIZE_T *yymsg_alloc, char **yymsg,
-                 yyarg[yycount++] = yytname[yyx];
-                 {
-                   YYSIZE_T yysize1 = yysize + yytnamerr (YY_NULLPTR, yytname[yyx]);
--                  if (! (yysize <= yysize1
--                         && yysize1 <= YYSTACK_ALLOC_MAXIMUM))
-+                  if (yysize <= yysize1 && yysize1 <= YYSTACK_ALLOC_MAXIMUM)
-+                    yysize = yysize1;
-+                  else
-                     return 2;
--                  yysize = yysize1;
-                 }
-               }
-         }
-@@ -1175,9 +1185,10 @@ yysyntax_error (YYSIZE_T *yymsg_alloc, char **yymsg,
- 
-   {
-     YYSIZE_T yysize1 = yysize + yystrlen (yyformat);
--    if (! (yysize <= yysize1 && yysize1 <= YYSTACK_ALLOC_MAXIMUM))
-+    if (yysize <= yysize1 && yysize1 <= YYSTACK_ALLOC_MAXIMUM)
-+      yysize = yysize1;
-+    else
-       return 2;
--    yysize = yysize1;
-   }
- 
-   if (*yymsg_alloc < yysize)
-@@ -1303,23 +1314,33 @@ yyparse (void)
-   yychar = YYEMPTY; /* Cause a token to be read.  */
-   goto yysetstate;
- 
-+
- /*------------------------------------------------------------.
--| yynewstate -- Push a new state, which is found in yystate.  |
-+| yynewstate -- push a new state, which is found in yystate.  |
- `------------------------------------------------------------*/
-- yynewstate:
-+yynewstate:
-   /* In all cases, when you get here, the value and location stacks
-      have just been pushed.  So pushing a state here evens the stacks.  */
-   yyssp++;
- 
-- yysetstate:
-+
-+/*--------------------------------------------------------------------.
-+| yynewstate -- set current state (the top of the stack) to yystate.  |
-+`--------------------------------------------------------------------*/
-+yysetstate:
-+  YYDPRINTF ((stderr, "Entering state %d\n", yystate));
-+  YY_ASSERT (0 <= yystate && yystate < YYNSTATES);
-   *yyssp = (yytype_int16) yystate;
- 
-   if (yyss + yystacksize - 1 <= yyssp)
-+#if !defined yyoverflow && !defined YYSTACK_RELOCATE
-+    goto yyexhaustedlab;
-+#else
-     {
-       /* Get the current used size of the three stacks, in elements.  */
-       YYSIZE_T yysize = (YYSIZE_T) (yyssp - yyss + 1);
- 
--#ifdef yyoverflow
-+# if defined yyoverflow
-       {
-         /* Give user a chance to reallocate the stack.  Use copies of
-            these so that the &'s don't force the real ones into
-@@ -1338,10 +1359,7 @@ yyparse (void)
-         yyss = yyss1;
-         yyvs = yyvs1;
-       }
--#else /* no yyoverflow */
--# ifndef YYSTACK_RELOCATE
--      goto yyexhaustedlab;
--# else
-+# else /* defined YYSTACK_RELOCATE */
-       /* Extend the stack our own way.  */
-       if (YYMAXDEPTH <= yystacksize)
-         goto yyexhaustedlab;
-@@ -1357,12 +1375,11 @@ yyparse (void)
-           goto yyexhaustedlab;
-         YYSTACK_RELOCATE (yyss_alloc, yyss);
-         YYSTACK_RELOCATE (yyvs_alloc, yyvs);
--#  undef YYSTACK_RELOCATE
-+# undef YYSTACK_RELOCATE
-         if (yyss1 != yyssa)
-           YYSTACK_FREE (yyss1);
-       }
- # endif
--#endif /* no yyoverflow */
- 
-       yyssp = yyss + yysize - 1;
-       yyvsp = yyvs + yysize - 1;
-@@ -1373,19 +1390,18 @@ yyparse (void)
-       if (yyss + yystacksize - 1 <= yyssp)
-         YYABORT;
-     }
--
--  YYDPRINTF ((stderr, "Entering state %d\n", yystate));
-+#endif /* !defined yyoverflow && !defined YYSTACK_RELOCATE */
- 
-   if (yystate == YYFINAL)
-     YYACCEPT;
- 
-   goto yybackup;
- 
-+
- /*-----------.
- | yybackup.  |
- `-----------*/
- yybackup:
--
-   /* Do appropriate processing given the current state.  Read a
-      lookahead token if we need one and don't already have one.  */
- 
-@@ -1443,7 +1459,6 @@ yybackup:
-   YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
-   *++yyvsp = yylval;
-   YY_IGNORE_MAYBE_UNINITIALIZED_END
--
-   goto yynewstate;
- 
- 
-@@ -1458,7 +1473,7 @@ yydefault:
- 
- 
- /*-----------------------------.
--| yyreduce -- Do a reduction.  |
-+| yyreduce -- do a reduction.  |
- `-----------------------------*/
- yyreduce:
-   /* yyn is the number of a rule to reduce with.  */
-@@ -1478,20 +1493,20 @@ yyreduce:
-   YY_REDUCE_PRINT (yyn);
-   switch (yyn)
-     {
--        case 3:
--#line 124 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+  case 3:
-+#line 128 "src/preproc/eqn/eqn.ypp"
-     { (yyvsp[0].b)->top_level(); non_empty_flag = 1; }
--#line 1485 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1500 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 4:
--#line 129 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 133 "src/preproc/eqn/eqn.ypp"
-     { (yyval.b) = (yyvsp[0].b); }
--#line 1491 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1506 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 5:
--#line 131 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 135 "src/preproc/eqn/eqn.ypp"
-     {
- 		  list_box *lb = (yyvsp[-1].b)->to_list_box();
- 		  if (!lb)
-@@ -1499,436 +1514,437 @@ yyreduce:
- 		  lb->append((yyvsp[0].b));
- 		  (yyval.b) = lb;
- 		}
--#line 1503 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1518 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 6:
--#line 142 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 146 "src/preproc/eqn/eqn.ypp"
-     { (yyval.b) = (yyvsp[0].b); }
--#line 1509 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1524 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 7:
--#line 144 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 148 "src/preproc/eqn/eqn.ypp"
-     { (yyval.b) = make_mark_box((yyvsp[0].b)); }
--#line 1515 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1530 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 8:
--#line 146 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 150 "src/preproc/eqn/eqn.ypp"
-     { (yyval.b) = make_lineup_box((yyvsp[0].b)); }
--#line 1521 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1536 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 9:
--#line 151 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 155 "src/preproc/eqn/eqn.ypp"
-     { (yyval.b) = (yyvsp[0].b); }
--#line 1527 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1542 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 10:
--#line 153 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 157 "src/preproc/eqn/eqn.ypp"
-     { (yyval.b) = make_limit_box((yyvsp[-2].b), 0, (yyvsp[0].b)); }
--#line 1533 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1548 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 11:
--#line 155 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 159 "src/preproc/eqn/eqn.ypp"
-     { (yyval.b) = make_limit_box((yyvsp[-2].b), (yyvsp[0].b), 0); }
--#line 1539 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1554 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 12:
--#line 157 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 161 "src/preproc/eqn/eqn.ypp"
-     { (yyval.b) = make_limit_box((yyvsp[-4].b), (yyvsp[-2].b), (yyvsp[0].b)); }
--#line 1545 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1560 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 13:
--#line 159 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 163 "src/preproc/eqn/eqn.ypp"
-     { (yyval.b) = make_limit_box((yyvsp[-4].b), make_limit_box((yyvsp[-2].b), (yyvsp[0].b), 0), 0); }
--#line 1551 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1566 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 14:
--#line 164 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 168 "src/preproc/eqn/eqn.ypp"
-     { (yyval.b) = (yyvsp[0].b); }
--#line 1557 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1572 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 15:
--#line 166 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 170 "src/preproc/eqn/eqn.ypp"
-     { (yyval.b) = make_sqrt_box((yyvsp[0].b)); }
--#line 1563 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1578 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 16:
--#line 168 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 172 "src/preproc/eqn/eqn.ypp"
-     { (yyval.b) = make_over_box((yyvsp[-2].b), (yyvsp[0].b)); }
--#line 1569 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1584 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 17:
--#line 170 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 174 "src/preproc/eqn/eqn.ypp"
-     { (yyval.b) = make_small_over_box((yyvsp[-2].b), (yyvsp[0].b)); }
--#line 1575 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1590 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 18:
--#line 175 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 179 "src/preproc/eqn/eqn.ypp"
-     { (yyval.b) = (yyvsp[0].b); }
--#line 1581 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1596 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 19:
--#line 177 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 181 "src/preproc/eqn/eqn.ypp"
-     { (yyval.b) = make_script_box((yyvsp[-2].b), 0, (yyvsp[0].b)); }
--#line 1587 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1602 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 20:
--#line 182 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 186 "src/preproc/eqn/eqn.ypp"
-     { (yyval.b) = (yyvsp[0].b); }
--#line 1593 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1608 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 21:
--#line 184 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 188 "src/preproc/eqn/eqn.ypp"
-     { (yyval.b) = make_script_box((yyvsp[-2].b), (yyvsp[0].b), 0); }
--#line 1599 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1614 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 22:
--#line 186 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 190 "src/preproc/eqn/eqn.ypp"
-     { (yyval.b) = make_script_box((yyvsp[-4].b), (yyvsp[-2].b), (yyvsp[0].b)); }
--#line 1605 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1620 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 23:
--#line 191 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 195 "src/preproc/eqn/eqn.ypp"
-     { (yyval.b) = split_text((yyvsp[0].str)); }
--#line 1611 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1626 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 24:
--#line 193 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 197 "src/preproc/eqn/eqn.ypp"
-     { (yyval.b) = new quoted_text_box((yyvsp[0].str)); }
--#line 1617 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1632 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 25:
--#line 195 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 199 "src/preproc/eqn/eqn.ypp"
-     { (yyval.b) = split_text((yyvsp[0].str)); }
--#line 1623 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1638 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 26:
--#line 197 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 201 "src/preproc/eqn/eqn.ypp"
-     { (yyval.b) = new quoted_text_box((yyvsp[0].str)); }
--#line 1629 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1644 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 27:
--#line 199 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 203 "src/preproc/eqn/eqn.ypp"
-     { (yyval.b) = new half_space_box; }
--#line 1635 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1650 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 28:
--#line 201 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 205 "src/preproc/eqn/eqn.ypp"
-     { (yyval.b) = new space_box; }
--#line 1641 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1656 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 29:
--#line 203 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 207 "src/preproc/eqn/eqn.ypp"
-     { (yyval.b) = new tab_box; }
--#line 1647 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1662 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 30:
--#line 205 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 209 "src/preproc/eqn/eqn.ypp"
-     { (yyval.b) = (yyvsp[-1].b); }
--#line 1653 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1668 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 31:
--#line 207 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 211 "src/preproc/eqn/eqn.ypp"
-     { (yyvsp[0].pb)->set_alignment(CENTER_ALIGN); (yyval.b) = (yyvsp[0].pb); }
--#line 1659 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1674 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 32:
--#line 209 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 213 "src/preproc/eqn/eqn.ypp"
-     { (yyvsp[0].pb)->set_alignment(LEFT_ALIGN); (yyval.b) = (yyvsp[0].pb); }
--#line 1665 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1680 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 33:
--#line 211 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 215 "src/preproc/eqn/eqn.ypp"
-     { (yyvsp[0].pb)->set_alignment(RIGHT_ALIGN); (yyval.b) = (yyvsp[0].pb); }
--#line 1671 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1686 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 34:
--#line 213 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 217 "src/preproc/eqn/eqn.ypp"
-     { (yyvsp[0].pb)->set_alignment(CENTER_ALIGN); (yyval.b) = (yyvsp[0].pb); }
--#line 1677 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1692 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 35:
--#line 215 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 219 "src/preproc/eqn/eqn.ypp"
-     { (yyval.b) = (yyvsp[-1].mb); }
--#line 1683 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1698 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 36:
--#line 217 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 221 "src/preproc/eqn/eqn.ypp"
-     { (yyval.b) = make_delim_box((yyvsp[-3].str), (yyvsp[-2].b), (yyvsp[0].str)); }
--#line 1689 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1704 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 37:
--#line 219 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 223 "src/preproc/eqn/eqn.ypp"
-     { (yyval.b) = make_delim_box((yyvsp[-1].str), (yyvsp[0].b), 0); }
--#line 1695 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1710 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 38:
--#line 221 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 225 "src/preproc/eqn/eqn.ypp"
-     { (yyval.b) = make_overline_box((yyvsp[-1].b)); }
--#line 1701 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1716 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 39:
--#line 223 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 227 "src/preproc/eqn/eqn.ypp"
-     { (yyval.b) = make_underline_box((yyvsp[-1].b)); }
--#line 1707 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1722 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 40:
--#line 225 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 229 "src/preproc/eqn/eqn.ypp"
-     { (yyval.b) = make_prime_box((yyvsp[-1].b)); }
--#line 1713 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1728 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 41:
--#line 227 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 231 "src/preproc/eqn/eqn.ypp"
-     { (yyval.b) = make_accent_box((yyvsp[-2].b), (yyvsp[0].b)); }
--#line 1719 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1734 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 42:
--#line 229 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 233 "src/preproc/eqn/eqn.ypp"
-     { (yyval.b) = make_uaccent_box((yyvsp[-2].b), (yyvsp[0].b)); }
--#line 1725 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1740 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 43:
--#line 231 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 235 "src/preproc/eqn/eqn.ypp"
-     { (yyval.b) = new font_box(strsave(get_grfont()), (yyvsp[0].b)); }
--#line 1731 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1746 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 44:
--#line 233 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 237 "src/preproc/eqn/eqn.ypp"
-     { (yyval.b) = new font_box(strsave(get_gbfont()), (yyvsp[0].b)); }
--#line 1737 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1752 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 45:
--#line 235 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 239 "src/preproc/eqn/eqn.ypp"
-     { (yyval.b) = new font_box(strsave(get_gfont()), (yyvsp[0].b)); }
--#line 1743 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1758 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 46:
--#line 237 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 241 "src/preproc/eqn/eqn.ypp"
-     { (yyval.b) = new fat_box((yyvsp[0].b)); }
--#line 1749 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1764 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 47:
--#line 239 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 243 "src/preproc/eqn/eqn.ypp"
-     { (yyval.b) = new font_box((yyvsp[-1].str), (yyvsp[0].b)); }
--#line 1755 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1770 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 48:
--#line 241 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 245 "src/preproc/eqn/eqn.ypp"
-     { (yyval.b) = new size_box((yyvsp[-1].str), (yyvsp[0].b)); }
--#line 1761 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1776 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 49:
--#line 243 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 247 "src/preproc/eqn/eqn.ypp"
-     { (yyval.b) = new hmotion_box((yyvsp[-1].n), (yyvsp[0].b)); }
--#line 1767 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1782 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 50:
--#line 245 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 249 "src/preproc/eqn/eqn.ypp"
-     { (yyval.b) = new hmotion_box(-(yyvsp[-1].n), (yyvsp[0].b)); }
--#line 1773 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1788 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 51:
--#line 247 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 251 "src/preproc/eqn/eqn.ypp"
-     { (yyval.b) = new vmotion_box((yyvsp[-1].n), (yyvsp[0].b)); }
--#line 1779 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1794 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 52:
--#line 249 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 253 "src/preproc/eqn/eqn.ypp"
-     { (yyval.b) = new vmotion_box(-(yyvsp[-1].n), (yyvsp[0].b)); }
--#line 1785 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1800 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 53:
--#line 251 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 255 "src/preproc/eqn/eqn.ypp"
-     { (yyvsp[0].b)->set_spacing_type((yyvsp[-1].str)); (yyval.b) = (yyvsp[0].b); }
--#line 1791 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1806 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 54:
--#line 253 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 257 "src/preproc/eqn/eqn.ypp"
-     { (yyval.b) = new vcenter_box((yyvsp[0].b)); }
--#line 1797 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1812 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 55:
--#line 255 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 259 "src/preproc/eqn/eqn.ypp"
-     { (yyval.b) = make_special_box((yyvsp[-1].str), (yyvsp[0].b)); }
--#line 1803 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1818 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 56:
--#line 260 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 264 "src/preproc/eqn/eqn.ypp"
-     {
- 		  int n;
- 		  if (sscanf((yyvsp[0].str), "%d", &n) == 1)
- 		    (yyval.n) = n;
- 		  a_delete (yyvsp[0].str);
- 		}
--#line 1814 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1829 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 57:
--#line 270 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 274 "src/preproc/eqn/eqn.ypp"
-     { (yyval.pb) = new pile_box((yyvsp[0].b)); }
--#line 1820 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1835 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 58:
--#line 272 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 276 "src/preproc/eqn/eqn.ypp"
-     { (yyvsp[-2].pb)->append((yyvsp[0].b)); (yyval.pb) = (yyvsp[-2].pb); }
--#line 1826 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1841 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 59:
--#line 277 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 281 "src/preproc/eqn/eqn.ypp"
-     { (yyval.pb) = (yyvsp[-1].pb); }
--#line 1832 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1847 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 60:
--#line 279 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 283 "src/preproc/eqn/eqn.ypp"
-     { (yyvsp[-1].pb)->set_space((yyvsp[-3].n)); (yyval.pb) = (yyvsp[-1].pb); }
--#line 1838 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1853 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 61:
--#line 284 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 288 "src/preproc/eqn/eqn.ypp"
-     { (yyval.mb) = new matrix_box((yyvsp[0].col)); }
--#line 1844 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1859 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 62:
--#line 286 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 290 "src/preproc/eqn/eqn.ypp"
-     { (yyvsp[-1].mb)->append((yyvsp[0].col)); (yyval.mb) = (yyvsp[-1].mb); }
--#line 1850 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1865 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 63:
--#line 291 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 295 "src/preproc/eqn/eqn.ypp"
-     { (yyval.col) = new column((yyvsp[0].b)); }
--#line 1856 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1871 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 64:
--#line 293 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 297 "src/preproc/eqn/eqn.ypp"
-     { (yyvsp[-2].col)->append((yyvsp[0].b)); (yyval.col) = (yyvsp[-2].col); }
--#line 1862 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1877 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 65:
--#line 298 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 302 "src/preproc/eqn/eqn.ypp"
-     { (yyval.col) = (yyvsp[-1].col); }
--#line 1868 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1883 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 66:
--#line 300 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 304 "src/preproc/eqn/eqn.ypp"
-     { (yyvsp[-1].col)->set_space((yyvsp[-3].n)); (yyval.col) = (yyvsp[-1].col); }
--#line 1874 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1889 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 67:
--#line 305 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 309 "src/preproc/eqn/eqn.ypp"
-     { (yyvsp[0].col)->set_alignment(CENTER_ALIGN); (yyval.col) = (yyvsp[0].col); }
--#line 1880 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1895 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 68:
--#line 307 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 311 "src/preproc/eqn/eqn.ypp"
-     { (yyvsp[0].col)->set_alignment(LEFT_ALIGN); (yyval.col) = (yyvsp[0].col); }
--#line 1886 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1901 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 69:
--#line 309 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 313 "src/preproc/eqn/eqn.ypp"
-     { (yyvsp[0].col)->set_alignment(RIGHT_ALIGN); (yyval.col) = (yyvsp[0].col); }
--#line 1892 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1907 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 70:
--#line 311 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 315 "src/preproc/eqn/eqn.ypp"
-     { (yyvsp[0].col)->set_alignment(CENTER_ALIGN); (yyval.col) = (yyvsp[0].col); }
--#line 1898 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1913 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 71:
--#line 315 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 319 "src/preproc/eqn/eqn.ypp"
-     { (yyval.str) = (yyvsp[0].str); }
--#line 1904 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1919 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 72:
--#line 317 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 321 "src/preproc/eqn/eqn.ypp"
-     { (yyval.str) = (yyvsp[0].str); }
--#line 1910 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1925 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 73:
--#line 322 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 326 "src/preproc/eqn/eqn.ypp"
-     { (yyval.str) = (yyvsp[0].str); }
--#line 1916 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1931 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 74:
--#line 324 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 328 "src/preproc/eqn/eqn.ypp"
-     { (yyval.str) = strsave("{"); }
--#line 1922 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1937 "src/preproc/eqn/eqn.cpp"
-     break;
- 
-   case 75:
--#line 326 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1645  */
-+#line 330 "src/preproc/eqn/eqn.ypp"
-     { (yyval.str) = strsave("}"); }
--#line 1928 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1943 "src/preproc/eqn/eqn.cpp"
-     break;
- 
- 
--#line 1932 "src/preproc/eqn/eqn.cpp" /* yacc.c:1645  */
-+#line 1947 "src/preproc/eqn/eqn.cpp"
-+
-       default: break;
-     }
-   /* User semantic actions sometimes alter yychar, and that requires
-@@ -2042,12 +2058,10 @@ yyerrlab:
- | yyerrorlab -- error raised explicitly by YYERROR.  |
- `---------------------------------------------------*/
- yyerrorlab:
--
--  /* Pacify compilers like GCC when the user code never invokes
--     YYERROR and the label yyerrorlab therefore never appears in user
--     code.  */
--  if (/*CONSTCOND*/ 0)
--     goto yyerrorlab;
-+  /* Pacify compilers when the user code never invokes YYERROR and the
-+     label yyerrorlab therefore never appears in user code.  */
-+  if (0)
-+    YYERROR;
- 
-   /* Do not reclaim the symbols of the rule whose action triggered
-      this YYERROR.  */
-@@ -2109,6 +2123,7 @@ yyacceptlab:
-   yyresult = 0;
-   goto yyreturn;
- 
-+
- /*-----------------------------------.
- | yyabortlab -- YYABORT comes here.  |
- `-----------------------------------*/
-@@ -2116,6 +2131,7 @@ yyabortlab:
-   yyresult = 1;
-   goto yyreturn;
- 
-+
- #if !defined yyoverflow || YYERROR_VERBOSE
- /*-------------------------------------------------.
- | yyexhaustedlab -- memory exhaustion comes here.  |
-@@ -2126,6 +2142,10 @@ yyexhaustedlab:
-   /* Fall through.  */
- #endif
- 
-+
-+/*-----------------------------------------------------.
-+| yyreturn -- parsing is finished, return the result.  |
-+`-----------------------------------------------------*/
- yyreturn:
-   if (yychar != YYEMPTY)
-     {
-@@ -2155,5 +2175,5 @@ yyreturn:
- #endif
-   return yyresult;
- }
--#line 329 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1903  */
-+#line 333 "src/preproc/eqn/eqn.ypp"
- 
-diff --git a/src/preproc/eqn/eqn.hpp b/src/preproc/eqn/eqn.hpp
-index 32a32a5..9a092c1 100644
---- a/src/preproc/eqn/eqn.hpp
-+++ b/src/preproc/eqn/eqn.hpp
-@@ -1,8 +1,9 @@
--/* A Bison parser, made by GNU Bison 3.2.  */
-+/* A Bison parser, made by GNU Bison 3.4.1.  */
- 
- /* Bison interface for Yacc-like parsers in C
- 
--   Copyright (C) 1984, 1989-1990, 2000-2015, 2018 Free Software Foundation, Inc.
-+   Copyright (C) 1984, 1989-1990, 2000-2015, 2018-2019 Free Software Foundation,
-+   Inc.
- 
-    This program is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-@@ -170,10 +171,9 @@ extern int yydebug;
- 
- /* Value type.  */
- #if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
--
- union YYSTYPE
- {
--#line 30 "../src/preproc/eqn/eqn.ypp" /* yacc.c:1906  */
-+#line 34 "src/preproc/eqn/eqn.ypp"
- 
- 	char *str;
- 	box *b;
-@@ -182,9 +182,9 @@ union YYSTYPE
- 	int n;
- 	column *col;
- 
--#line 186 "src/preproc/eqn/eqn.hpp" /* yacc.c:1906  */
--};
-+#line 186 "src/preproc/eqn/eqn.hpp"
- 
-+};
- typedef union YYSTYPE YYSTYPE;
- # define YYSTYPE_IS_TRIVIAL 1
- # define YYSTYPE_IS_DECLARED 1
 diff --git a/src/preproc/eqn/eqn.ypp b/src/preproc/eqn/eqn.ypp
 index fb318c3..b7b647e 100644
 --- a/src/preproc/eqn/eqn.ypp
diff --git a/poky/meta/recipes-extended/groff/groff_1.22.4.bb b/poky/meta/recipes-extended/groff/groff_1.22.4.bb
index 0867452..7bb393e 100644
--- a/poky/meta/recipes-extended/groff/groff_1.22.4.bb
+++ b/poky/meta/recipes-extended/groff/groff_1.22.4.bb
@@ -18,6 +18,10 @@
 SRC_URI[md5sum] = "08fb04335e2f5e73f23ea4c3adbf0c5f"
 SRC_URI[sha256sum] = "e78e7b4cb7dec310849004fa88847c44701e8d133b5d4c13057d876c1bad0293"
 
+# Remove at the next upgrade
+PR = "r1"
+HASHEQUIV_HASH_VERSION .= ".1"
+
 DEPENDS = "bison-native"
 RDEPENDS_${PN} += "perl sed"
 
@@ -30,6 +34,13 @@
 
 CACHED_CONFIGUREVARS += "ac_cv_path_PERL='/usr/bin/env perl' ac_cv_path_BASH_PROG='no' PAGE=A4"
 
+# Delete these generated files since we depend on bison-native
+# and regenerate them. Do it deterministically (always).
+do_configure_prepend() {
+	rm -f ${S}/src/preproc/eqn/eqn.cpp
+	rm -f ${S}/src/preproc/eqn/eqn.hpp
+}
+
 do_install_append() {
 	# Some distros have both /bin/perl and /usr/bin/perl, but we set perl location
 	# for target as /usr/bin/perl, so fix it to /usr/bin/perl.