From 0ec3159fd0c924a2fd1ff4df2f2a5f30f3b16b8e Mon Sep 17 00:00:00 2001
From: Cameron Cawley <ccawley2011@gmail.com>
Date: Tue, 31 Jul 2018 18:44:37 +0100
Subject: [PATCH] CMake: Fix compilation on systems without libm

---
 CMakeLists.txt | 1 +
 1 file changed, 1 insertion(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 805ba14e9c..60d9c48198 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -61,6 +61,7 @@ if(NOT WIN32)
   )
   if(NOT M_LIBRARY)
     message(STATUS "math lib 'libm' not found; floating point support disabled")
+    set(M_LIBRARY "")
   endif()
 else()
   # not needed on windows