From 491bb14c0c9cf040154d57e246206ffb2f86a7e5 Mon Sep 17 00:00:00 2001
From: fanquake <fanquake@gmail.com>
Date: Fri, 10 Jun 2022 11:14:49 +0100
Subject: build: test for timingsafe_bcmp

Code introduced in #15649 added usage of `timingsafe_bcmp()`, if
available, otherwise falling back to our own implementation. However
the relevant build system check was never added, so currently, we'll
always just use our implementation, as HAVE_TIMINGSAFE_BCMP will never
be defined.

Add the check for timingsafe_bcmp. Note that as far as I'm aware, it's
only available on OpenBSD.
---
 src/crypto/chacha_poly_aead.cpp | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'src')

diff --git a/src/crypto/chacha_poly_aead.cpp b/src/crypto/chacha_poly_aead.cpp
index 4f3e6f7fa3..f736b2d867 100644
--- a/src/crypto/chacha_poly_aead.cpp
+++ b/src/crypto/chacha_poly_aead.cpp
@@ -2,6 +2,10 @@
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
+#if defined(HAVE_CONFIG_H)
+#include <config/bitcoin-config.h>
+#endif
+
 #include <crypto/chacha_poly_aead.h>
 
 #include <crypto/poly1305.h>
-- 
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