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-rw-r--r--include/configure.h.in3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/configure.h.in b/include/configure.h.in
index 3c43bd529..cf8dc9450 100644
--- a/include/configure.h.in
+++ b/include/configure.h.in
@@ -341,6 +341,9 @@
/* Define to 1 if the system has the type `ptrdiff_t'. */
#undef HAVE_PTRDIFF_T
+/* Define to 1 if the compiler has the `__builtin_clz` builtin. */
+#undef HAVE___BUILTIN_CLZ
+
/* Define to 1 if you have the <readline/history.h> header file. */
#undef HAVE_READLINE_HISTORY_H