Patch for QNX, by Chris Herborth.
diff --git a/Include/osdefs.h b/Include/osdefs.h
index f914919..594fc10 100644
--- a/Include/osdefs.h
+++ b/Include/osdefs.h
@@ -44,12 +44,15 @@
 #define DELIM '\n'
 #endif
 
+/* Mod by chrish: QNX has WATCOM, but isn't DOS */
+#if !defined(__QNX__)
 #if defined(MS_WINDOWS) || defined(__BORLANDC__) || defined(__WATCOMC__) || defined(__DJGPP__) || defined(__TOS_OS2__)
 #define SEP '\\'
 #define ALTSEP '/'
 #define MAXPATHLEN 256
 #define DELIM ';'
 #endif
+#endif
 
 /* Filename separator */
 #ifndef SEP