diff -ur a/CMakeLists.txt b/CMakeLists.txt
--- a/CMakeLists.txt	2019-04-14 20:10:32.000000000 +0200
+++ b/CMakeLists.txt	2019-09-06 14:14:39.425498139 +0200
@@ -44,7 +44,7 @@
 endif()
 
 if(UNIX AND NOT APPLE AND NOT BEOS AND NOT HAIKU)
-  find_library(M_LIBRARY m)
+  set(M_LIBRARY m)
 else()
   # libm is not needed and/or not available
   set(M_LIBRARY "")