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-rw-r--r--unix/tkConfig.h.in3
1 files changed, 3 insertions, 0 deletions
diff --git a/unix/tkConfig.h.in b/unix/tkConfig.h.in
index 7c36c14..79389ff 100644
--- a/unix/tkConfig.h.in
+++ b/unix/tkConfig.h.in
@@ -91,6 +91,9 @@
/* Linker support for module scope symbols */
#undef MODULE_SCOPE
+/* Is Darwin CoreFoundation unavailable for 64-bit? */
+#undef NO_COREFOUNDATION_64
+
/* Do we have fd_set? */
#undef NO_FD_SET