From 737852639393033c33be171a5d096114bd975b64 Mon Sep 17 00:00:00 2001
From: Dan Miller <pigeons>
Date: Wed, 8 Feb 2017 14:50:14 -0800
Subject: [PATCH] backtrace_symbols() requires -lexecinfo on dragonflybsd

freebsd also needs -lexecinfo for backtrace()
---
 CMakeLists.txt | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1bc6c493..541a4493 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -607,11 +607,13 @@ endif()
 include_directories(SYSTEM ${Boost_INCLUDE_DIRS})
 if(MINGW)
   set(EXTRA_LIBRARIES mswsock;ws2_32;iphlpapi)
-elseif(APPLE OR FREEBSD OR OPENBSD OR ANDROID)
+elseif(APPLE OR OPENBSD OR ANDROID)
   set(EXTRA_LIBRARIES "")
+elseif(FREEBSD)
+  set(EXTRA_LIBRARIES execinfo)
 elseif(DRAGONFLY)
   find_library(COMPAT compat)
-  set(EXTRA_LIBRARIES ${COMPAT})
+  set(EXTRA_LIBRARIES execinfo ${COMPAT})
 elseif(NOT MSVC)
   find_library(RT rt)
   set(EXTRA_LIBRARIES ${RT})