https://bugs.gentoo.org/959272
--- a/src/cgnstools/tkogl/tkogl.c
+++ b/src/cgnstools/tkogl/tkogl.c
@@ -25,7 +25,7 @@
 #if ! defined(__WIN32__) && ! defined(_WIN32)
 /* For TkWmAddToColormapWindows. */
 #define _TKPORT /* Typical installations cannot find tkPort.h. */
-#include <tk-private/generic/tkInt.h>
+#include <tkInt.h>
 #endif
 
 #ifndef CONST