From c9072b252661bea92f53ccf9b395fc72819c6519 Mon Sep 17 00:00:00 2001
From: Jim Hague <jim.hague@acm.org>
Date: Wed, 24 Jun 2020 22:06:25 +0100
Subject: [PATCH] Add system libraries when checking OpenSSL functions.

If OpenSSL is a static library, linking the test programs will require
system libraries.
---
 CMakeLists.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index d7c79e78..43d4d8e3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -335,7 +335,7 @@ check_include_file(openssl/rand.h HAVE_OPENSSL_RAND_H)
 check_include_file(openssl/conf.h HAVE_OPENSSL_CONF_H)
 check_include_file(openssl/engine.h HAVE_OPENSSL_ENGINE_H)
 
-set(CMAKE_REQUIRED_LIBRARIES ${OPENSSL_LIBRARIES})
+set(CMAKE_REQUIRED_LIBRARIES ${OPENSSL_LIBRARIES} ${getdns_system_libs})
 check_function_exists(DSA_SIG_set0 HAVE_DSA_SIG_SET0)
 check_function_exists(DSA_set0_pqg HAVE_DSA_SET0_PQG)
 check_function_exists(DSA_set0_key HAVE_DSA_SET0_KEY)