From 763c77e628e2c78b4c422bb7e26327d28ee54ad4 Mon Sep 17 00:00:00 2001
From: Cameron Cawley <ccawley2011@gmail.com>
Date: Sat, 22 May 2021 01:09:48 +0100
Subject: [PATCH] cmake: Fix compilation on systems without libm

Signed-off-by: Cosmin Truta <ctruta@gmail.com>
---
 CMakeLists.txt | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 941cacb49..527d83693 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -10,7 +10,7 @@
 # Revised by Sam Serrels, 2017
 # Revised by Vadim Barkov, 2017
 # Revised by Vicky Pfau, 2018
-# Revised by Cameron Cawley, 2018
+# Revised by Cameron Cawley, 2018,2021
 # Revised by Kyle Bentley, 2018
 # Revised by David Callu, 2020
 # Revised by Steve Robinson, 2020
@@ -49,6 +49,9 @@ endif()
 
 if(UNIX AND NOT APPLE AND NOT BEOS AND NOT HAIKU AND NOT EMSCRIPTEN)
   find_library(M_LIBRARY m)
+  if(NOT M_LIBRARY)
+    set(M_LIBRARY "")
+  endif()
 else()
   # libm is not needed and/or not available.
   set(M_LIBRARY "")