Support the Curses-only configuration

sys/msdos/msdos.c

@@ -61,6 +61,7 @@ static unsigned int dos_ioctl(int, int, unsigned);
 extern boolean pckeys(unsigned char, unsigned char); /* pckeys.c */
 #endif
 
+#ifdef TTY_GRAPHICS
 int
 tgetch(void)
 {
@@ -86,6 +87,7 @@ tgetch(void)
 #endif
     return ((ch == '\r') ? '\n' : ch);
 }
+#endif /* TTY_GRAPHICS */
 
 /*
  *  Keyboard translation tables.

sys/msdos/video.c

@@ -89,7 +89,7 @@ get_scr_size(void)
         txt_get_scr_size();
 }
 
-#ifdef ENHANCED_SYMBOLS
+#if defined(TTY_GRAPHICS) && defined(ENHANCED_SYMBOLS)
 void g_pututf8(uint8 *utf8str)
 {
     /* not implemented for msdos (yet) */