1 files changed, 7 insertions, 0 deletions
diff --git a/generic/tclInt.h b/generic/tclInt.h
index 1433743..7efd5d3 100644
--- a/generic/tclInt.h
+++ b/generic/tclInt.h
@@ -5093,6 +5093,13 @@ typedef struct NRE_callback {
 #define Tcl_Free                TclpFree
 #endif
 
+/*
+ * Other externals.
+ */
+
+MODULE_SCOPE size_t TclEnvEpoch; /* Epoch of the tcl environment
+                                         * (if changed with tcl-env). */
+
 #endif /* _TCLINT */
 
 /*