Index: pm_test/CMakeLists.txt
--- pm_test/CMakeLists.txt.orig
+++ pm_test/CMakeLists.txt
@@ -1,4 +1,5 @@
 # pm_test
+cmake_policy(SET CMP0037 OLD)
 
 # set the build directory to be in portmidi, not in portmidi/pm_test
 # this is required for Xcode:
