diff --git a/CMakeLists.txt b/CMakeLists.txt
index 086e831fcb..5113468159 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -78,6 +78,8 @@ if(LINUX OR APPLE)
         # comes from; probably a XCode preset?
         set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -ffunction-sections -fdata-sections")
     endif()
+    add_definitions(-D__MAC_OS_X_VERSION_MIN_REQUIRED=140000)
+    add_definitions(-DTARGET_OS_OSX)
 endif()
 
 if (USE_LLD)