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-rw-r--r--Modules/_tkinter.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/Modules/_tkinter.c b/Modules/_tkinter.c
index 4dada0b..49c9444 100644
--- a/Modules/_tkinter.c
+++ b/Modules/_tkinter.c
@@ -60,6 +60,9 @@ Copyright (C) 1994 Steen Lumholt.
#error "Tk older than 8.5.12 not supported"
#endif
+#ifndef TCL_WITH_EXTERNAL_TOMMATH
+#define TCL_NO_TOMMATH_H
+#endif
#include <tclTomMath.h>
#if !(defined(MS_WINDOWS) || defined(__CYGWIN__))