changed the definition of FT_CALLBACK_DEF

ChangeLog

@@ -1,5 +1,8 @@
 2001-06-27  David Turner <david@freetype.org>
 
+	* builds/unix/ftconfig.in: changed the definition of the
+	FT_CALLBACK_DEF macro
+
 	* include/freetype/ftconfig.h, src/*/*.c: changed the definition and
 	uses of the FT_CALLBACK_DEF macro in order to support 16-bit compilers
 

builds/unix/ftconfig.in

@@ -231,19 +231,23 @@ FT_BEGIN_HEADER
   /* FT_CALLBACK_TABLE_DEF is used to _define_ a constant variable   */
   /* that contains pointers to callback functions.                   */
   /*                                                                 */
-#ifdef __cplusplus
-
-#define FT_CALLBACK_DEF        extern "C"
-#define FT_CALLBACK_TABLE      extern "C"
-#define FT_CALLBACK_TABLE_DEF  extern "C"
-
-#else
-
-#define FT_CALLBACK_DEF        static
-#define FT_CALLBACK_TABLE      extern
-#define FT_CALLBACK_TABLE_DEF  /* nothing */
+#ifndef FT_CALLBACK_DEF
+#  ifdef __cplusplus
+#    define FT_CALLBACK_DEF(x)  extern "C" x
+#  else
+#    define FT_CALLBACK_DEF(x)  static x
+#  endif
+#endif
 
-#endif /* __cplusplus */
+#ifndef FT_CALLBACK_TABLE
+#  ifdef __cplusplus
+#    define FT_CALLBACK_TABLE      extern "C"
+#    define FT_CALLBACK_TABLE_DEF  extern "C"
+#  else
+#    define FT_CALLBACK_TABLE      extern
+#    define FT_CALLBACK_TABLE_DEF  /* nothing */
+#  endif
+#endif
 
 
 FT_END_HEADER