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-rw-r--r--ares/configure.ac2
1 files changed, 2 insertions, 0 deletions
diff --git a/ares/configure.ac b/ares/configure.ac
index 7e97d6095..b4774d9bf 100644
--- a/ares/configure.ac
+++ b/ares/configure.ac
@@ -232,5 +232,7 @@ AC_CHECK_SIZEOF(struct in_addr, ,
]
)
+AC_CHECK_FUNCS(bitncmp)
+
AC_OUTPUT(Makefile)