Relax check to warning

Author: thbeu

CMakeLists.txt

@@ -121,7 +121,7 @@ if(CMAKE_SYSTEM_NAME MATCHES "Windows" AND ${CMAKE_SYSTEM_VERSION} VERSION_LESS
 	message(SEND_ERROR "Windows ${CMAKE_SYSTEM_VERSION} or lower is not supported. Please use Windows 10 or later.")
 endif()
 if(CMAKE_SIZEOF_VOID_P LESS 8)
-	message(SEND_ERROR "Pointer size ${CMAKE_SIZEOF_VOID_P} is not supported. Please use a 64-bit compiler.")
+	message(WARNING "Pointer size ${CMAKE_SIZEOF_VOID_P} is not supported. Please use a 64-bit compiler.")
 endif()
 
 # Set some variables that are used in-tree and while building based on our options