diff --git a/CMakeLists.txt b/CMakeLists.txt
index 746faac20..a25987cdb 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -56,6 +56,11 @@ if(POLICY CMP0026)
   cmake_policy(SET CMP0026 OLD)
 endif()
 
+if (POLICY CMP0042)
+  # silence cmake 3.0+ warnings about MACOSX_RPATH
+  cmake_policy(SET CMP0042 OLD)
+endif()
+
 # must go before the project command
 set(CMAKE_CONFIGURATION_TYPES "Debug;Release" CACHE STRING "Configs" FORCE)
 if(DEFINED CMAKE_BUILD_TYPE)