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-rw-r--r--unix/tclConfig.h.in4
1 files changed, 0 insertions, 4 deletions
diff --git a/unix/tclConfig.h.in b/unix/tclConfig.h.in
index 91a5bb4..348dedb 100644
--- a/unix/tclConfig.h.in
+++ b/unix/tclConfig.h.in
@@ -289,10 +289,6 @@
/* Is Tcl built as a framework? */
#undef TCL_FRAMEWORK
-/* Use better emulation of non-blocking channels for channels without
- BlockModeProc? */
-#undef TCL_IO_TRACK_OS_FOR_DRIVER_WITH_BAD_BLOCKING
-
/* Can this platform load code from memory? */
#undef TCL_LOAD_FROM_MEMORY