--- SAOImageDS9/tksao/configure.orig	2021-01-12 19:17:40.000000000 +0100
+++ SAOImageDS9/tksao/configure	2021-08-24 18:21:10.377946467 +0200
@@ -5963,6 +5963,9 @@
 	if test -d "${TK_SRC_DIR}/generic/ttk"; then
 	   TK_INCLUDES="${TK_INCLUDES} -I\"${TK_SRC_DIR_NATIVE}/generic/ttk\""
 	fi
+	if test -d "${TK_SRC_DIR}/unix"; then
+	   TK_INCLUDES="${TK_INCLUDES} -I\"${TK_SRC_DIR_NATIVE}/unix\""
+	fi
 	if test "${TEA_WINDOWINGSYSTEM}" != "x11"; then
 	   TK_INCLUDES="${TK_INCLUDES} -I\"${TK_XLIB_DIR_NATIVE}\""
 	fi