From 27584018292f3df0a35f987b6adc5c39afbeeb44 Mon Sep 17 00:00:00 2001
From: Jasper Lievisse Adriaanse <jasper@humppa.nl>
Date: Wed, 10 Jun 2020 09:33:57 +0200
Subject: [PATCH] only link with libm on OpenBSD

fixes "ld: error: unable to find library -ldl"

Signed-off-by: Jasper Lievisse Adriaanse <jasper@humppa.nl>
---
 src/CMakeLists.txt | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index ee34673b..053ca1d9 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -150,6 +150,8 @@ endif (HAVE_GETADDRINFO_A AND WITH_ADNS)
 if (UNIX)
 	if (APPLE)
 		set (MOSQ_LIBS ${MOSQ_LIBS} dl m)
+    elseif (${CMAKE_SYSTEM_NAME} MATCHES "OpenBSD")
+	    set (MOSQ_LIBS ${MOSQ_LIBS} m)
     elseif(QNX)
         set(MOSQ_LIBS ${MOSQ_LIBS} m socket)
     else(APPLE)