diff --git a/ChangeLog b/ChangeLog
index 6c64854..c512808 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,20 @@
+2017-08-08  Werner Lemberg  <wl@gnu.org>
+
+	[psnames] Really fix issue #49949.
+
+	We now use a separate preprocessor macro to handle both definition
+	and declaration of the glyph name arrays.
+
+	* src/psnames/psmodule.c (DEFINE_PS_TABLE_DATA): New macro.
+
+	* src/tools/glnames.py (StringTable::dump,
+	StringTable::dump_sublist): Use `DEFINE_PS_TABLE_DATA'.
+	(dump_encoding): Ditto.
+	(main): Use `wb' mode for writing the output file, which works on
+	Windows also.
+
+	* src/psnames/pstables.h: Regenerated.
+
 2017-08-08  Alexei Podtelezhnikov  <apodtele@gmail.com>
 
 	[smooth] Harmony LCD rendering.
@@ -25,7 +42,7 @@
 
 	* src/sftnt/ttpost.c (format): Use otspec-compliant versions. 
 
-2017-06-27  Werner Lemberg  <wl@gnu.org>
+2017-08-05  Werner Lemberg  <wl@gnu.org>
 
 	[truetype] Integer overflow.
 
diff --git a/src/psnames/psmodule.c b/src/psnames/psmodule.c
index 3ff8cb9..44ba9ec 100644
--- a/src/psnames/psmodule.c
+++ b/src/psnames/psmodule.c
@@ -23,8 +23,21 @@
 
 #include "psmodule.h"
 
+  /*
+   *  The file `pstables.h' with its arrays and its function
+   *  `ft_get_adobe_glyph_index' is useful for other projects also (for
+   *  example, `pdfium' is using it).  However, if used as a C++ header,
+   *  including it in two different source files makes it necessary to use
+   *  `extern const' for the declaration of its arrays, otherwise the data
+   *  would be duplicated as mandated by the C++ standard.
+   *
+   *  For this reason, we use `DEFINE_PS_TABLES' to guard the function
+   *  definitions, and `DEFINE_PS_TABLES_DATA' to provide both proper array
+   *  declarations and definitions.
+   */
 #include "pstables.h"
 #define  DEFINE_PS_TABLES
+#define  DEFINE_PS_TABLES_DATA
 #include "pstables.h"
 
 #include "psnamerr.h"
diff --git a/src/psnames/pstables.h b/src/psnames/pstables.h
index e0f5e30..2a2b717 100644
--- a/src/psnames/pstables.h
+++ b/src/psnames/pstables.h
@@ -19,7 +19,7 @@
   /* This file has been generated automatically -- do not edit! */
 
 
-#ifndef  DEFINE_PS_TABLES
+#ifndef  DEFINE_PS_TABLES_DATA
 #ifdef  __cplusplus
   extern "C"
 #else
@@ -27,7 +27,7 @@
 #endif
 #endif
   const char  ft_standard_glyph_names[3696]
-#ifdef  DEFINE_PS_TABLES
+#ifdef  DEFINE_PS_TABLES_DATA
   =
   {
     '.','n','u','l','l', 0,
@@ -451,7 +451,7 @@
     'R','o','m','a','n', 0,
     'S','e','m','i','b','o','l','d', 0,
   }
-#endif /* DEFINE_PS_TABLES */
+#endif /* DEFINE_PS_TABLES_DATA */
   ;
 
 
@@ -459,7 +459,7 @@
 
   /* Values are offsets into the `ft_standard_glyph_names' table */
 
-#ifndef  DEFINE_PS_TABLES
+#ifndef  DEFINE_PS_TABLES_DATA
 #ifdef  __cplusplus
   extern "C"
 #else
@@ -467,7 +467,7 @@
 #endif
 #endif
   const short  ft_mac_names[FT_NUM_MAC_NAMES]
-#ifdef  DEFINE_PS_TABLES
+#ifdef  DEFINE_PS_TABLES_DATA
   =
   {
      253,   0,   6, 261, 267, 274, 283, 294, 301, 309, 758, 330, 340, 351,
@@ -490,7 +490,7 @@
     1270,1313,1323,1171,1290,1332,1211,1235,1276, 169, 175, 182, 189, 200,
      209, 218, 225, 232, 239, 246
   }
-#endif /* DEFINE_PS_TABLES */
+#endif /* DEFINE_PS_TABLES_DATA */
   ;
 
 
@@ -498,7 +498,7 @@
 
   /* Values are offsets into the `ft_standard_glyph_names' table */
 
-#ifndef  DEFINE_PS_TABLES
+#ifndef  DEFINE_PS_TABLES_DATA
 #ifdef  __cplusplus
   extern "C"
 #else
@@ -506,7 +506,7 @@
 #endif
 #endif
   const short  ft_sid_names[FT_NUM_SID_NAMES]
-#ifdef  DEFINE_PS_TABLES
+#ifdef  DEFINE_PS_TABLES_DATA
   =
   {
      253, 261, 267, 274, 283, 294, 301, 309, 319, 330, 340, 351, 360, 365,
@@ -538,12 +538,12 @@
     3418,3430,3442,3454,3471,3483,3498,3506,3518,3530,3542,3559,3574,3586,
     3597,3612,3620,3628,3636,3644,3650,3655,3660,3666,3673,3681,3687
   }
-#endif /* DEFINE_PS_TABLES */
+#endif /* DEFINE_PS_TABLES_DATA */
   ;
 
 
   /* the following are indices into the SID name table */
-#ifndef  DEFINE_PS_TABLES
+#ifndef  DEFINE_PS_TABLES_DATA
 #ifdef  __cplusplus
   extern "C"
 #else
@@ -551,7 +551,7 @@
 #endif
 #endif
   const unsigned short  t1_standard_encoding[256]
-#ifdef  DEFINE_PS_TABLES
+#ifdef  DEFINE_PS_TABLES_DATA
   =
   {
       0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
@@ -571,12 +571,12 @@
       0,138,  0,139,  0,  0,  0,  0,140,141,142,143,  0,  0,  0,  0,
       0,144,  0,  0,  0,145,  0,  0,146,147,148,149,  0,  0,  0,  0
   }
-#endif /* DEFINE_PS_TABLES */
+#endif /* DEFINE_PS_TABLES_DATA */
   ;
 
 
   /* the following are indices into the SID name table */
-#ifndef  DEFINE_PS_TABLES
+#ifndef  DEFINE_PS_TABLES_DATA
 #ifdef  __cplusplus
   extern "C"
 #else
@@ -584,7 +584,7 @@
 #endif
 #endif
   const unsigned short  t1_expert_encoding[256]
-#ifdef  DEFINE_PS_TABLES
+#ifdef  DEFINE_PS_TABLES_DATA
   =
   {
       0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
@@ -604,7 +604,7 @@
     347,348,349,350,351,352,353,354,355,356,357,358,359,360,361,362,
     363,364,365,366,367,368,369,370,371,372,373,374,375,376,377,378
   }
-#endif /* DEFINE_PS_TABLES */
+#endif /* DEFINE_PS_TABLES_DATA */
   ;
 
 
@@ -619,7 +619,7 @@
 
 #ifdef FT_CONFIG_OPTION_ADOBE_GLYPH_LIST
 
-#ifndef  DEFINE_PS_TABLES
+#ifndef  DEFINE_PS_TABLES_DATA
 #ifdef  __cplusplus
   extern "C"
 #else
@@ -627,7 +627,7 @@
 #endif
 #endif
   const unsigned char  ft_adobe_glyph_list[55997L]
-#ifdef  DEFINE_PS_TABLES
+#ifdef  DEFINE_PS_TABLES_DATA
   =
   {
       0, 52,  0,106,  2,167,  3, 63,  4,220,  6,125,  9,143, 10, 23,
@@ -4131,7 +4131,7 @@
     182,117,  2,218,167,218,178,232,233,242,225,231,225,238, 97,128,
      48, 90,235,225,244,225,235,225,238, 97,128, 48,186
   }
-#endif /* DEFINE_PS_TABLES */
+#endif /* DEFINE_PS_TABLES_DATA */
   ;
 
 
diff --git a/src/tools/glnames.py b/src/tools/glnames.py
index 9ed1588..3270eeb 100644
--- a/src/tools/glnames.py
+++ b/src/tools/glnames.py
@@ -4920,7 +4920,7 @@
 
   def dump( self, file ):
     write = file.write
-    write( "#ifndef  DEFINE_PS_TABLES\n" )
+    write( "#ifndef  DEFINE_PS_TABLES_DATA\n" )
     write( "#ifdef  __cplusplus\n" )
     write( '  extern "C"\n' )
     write( "#else\n" )
@@ -4929,7 +4929,7 @@
     write( "#endif\n" )
     write( "  const char  " + self.master_table +
            "[" + repr( self.total ) + "]\n" )
-    write( "#ifdef  DEFINE_PS_TABLES\n" )
+    write( "#ifdef  DEFINE_PS_TABLES_DATA\n" )
     write( "  =\n" )
     write( "  {\n" )
 
@@ -4941,7 +4941,7 @@
 
     write( line )
     write( "  }\n" )
-    write( "#endif /* DEFINE_PS_TABLES */\n" )
+    write( "#endif /* DEFINE_PS_TABLES_DATA */\n" )
     write( "  ;\n\n\n" )
 
   def dump_sublist( self, file, table_name, macro_name, sublist ):
@@ -4950,7 +4950,7 @@
 
     write( "  /* Values are offsets into the `" +
            self.master_table + "' table */\n\n" )
-    write( "#ifndef  DEFINE_PS_TABLES\n" )
+    write( "#ifndef  DEFINE_PS_TABLES_DATA\n" )
     write( "#ifdef  __cplusplus\n" )
     write( '  extern "C"\n' )
     write( "#else\n" )
@@ -4959,7 +4959,7 @@
     write( "#endif\n" )
     write( "  const short  " + table_name +
            "[" + macro_name + "]\n" )
-    write( "#ifdef  DEFINE_PS_TABLES\n" )
+    write( "#ifdef  DEFINE_PS_TABLES_DATA\n" )
     write( "  =\n" )
     write( "  {\n" )
 
@@ -4979,7 +4979,7 @@
     write( line )
     write( "\n" )
     write( "  }\n" )
-    write( "#endif /* DEFINE_PS_TABLES */\n" )
+    write( "#endif /* DEFINE_PS_TABLES_DATA */\n" )
     write( "  ;\n\n\n" )
 
 
@@ -5213,7 +5213,7 @@
 
   write = file.write
   write( "  /* the following are indices into the SID name table */\n" )
-  write( "#ifndef  DEFINE_PS_TABLES\n" )
+  write( "#ifndef  DEFINE_PS_TABLES_DATA\n" )
   write( "#ifdef  __cplusplus\n" )
   write( '  extern "C"\n' )
   write( "#else\n" )
@@ -5222,7 +5222,7 @@
   write( "#endif\n" )
   write( "  const unsigned short  " + encoding_name +
          "[" + repr( len( encoding_list ) ) + "]\n" )
-  write( "#ifdef  DEFINE_PS_TABLES\n" )
+  write( "#ifdef  DEFINE_PS_TABLES_DATA\n" )
   write( "  =\n" )
   write( "  {\n" )
 
@@ -5241,14 +5241,14 @@
   write( line )
   write( "\n" )
   write( "  }\n" )
-  write( "#endif /* DEFINE_PS_TABLES */\n" )
+  write( "#endif /* DEFINE_PS_TABLES_DATA */\n" )
   write( "  ;\n\n\n" )
 
 
 def dump_array( the_array, write, array_name ):
   """dumps a given encoding"""
 
-  write( "#ifndef  DEFINE_PS_TABLES\n" )
+  write( "#ifndef  DEFINE_PS_TABLES_DATA\n" )
   write( "#ifdef  __cplusplus\n" )
   write( '  extern "C"\n' )
   write( "#else\n" )
@@ -5257,7 +5257,7 @@
   write( "#endif\n" )
   write( "  const unsigned char  " + array_name +
          "[" + repr( len( the_array ) ) + "L]\n" )
-  write( "#ifdef  DEFINE_PS_TABLES\n" )
+  write( "#ifdef  DEFINE_PS_TABLES_DATA\n" )
   write( "  =\n" )
   write( "  {\n" )
 
@@ -5282,7 +5282,7 @@
   write( line )
   write( "\n" )
   write( "  }\n" )
-  write( "#endif /* DEFINE_PS_TABLES */\n" )
+  write( "#endif /* DEFINE_PS_TABLES_DATA */\n" )
   write( "  ;\n\n\n" )
 
 
@@ -5293,7 +5293,7 @@
     print __doc__ % sys.argv[0]
     sys.exit( 1 )
 
-  file  = open( sys.argv[1], "w\n" )
+  file  = open( sys.argv[1], "wb" )
   write = file.write
 
   count_sid = len( sid_standard_names )