--- dstool_tk/src/tkAppInit.c	2007-01-05 21:50:33.000000000 +0000
+++ dstool_tk/src/tkAppInit.c	2021-06-28 15:59:31.672857538 +0000
@@ -22,14 +22,6 @@
 #include <tk.h>
 
 /*
- * The following variable is a special hack that is needed in order for
- * Sun shared libraries to be used for Tcl.
- */
-
-extern int matherr();
-int *tclDummyMathPtr = (int *) matherr;
-
-/*
  *----------------------------------------------------------------------
  *
  * main --