fix: rename option to macosx_deployment_target

Author: aminya

CMakeLists.txt

@@ -46,9 +46,7 @@ set_option_from_env(ZMQ_NO_SYNC_RESOLVE)
 if(APPLE)
   option(MACOSX_DEPLOYMENT_TARGET "MacOS deployment target" "10.15")
   set_option_from_env(MACOSX_DEPLOYMENT_TARGET)
-  set(CMAKE_OSX_DEPLOYMENT_TARGET
-      ${MACOSX_DEPLOYMENT_TARGET}
-      CACHE STRING "MacOS deployment target")
+  set(CMAKE_OSX_DEPLOYMENT_TARGET ${MACOSX_DEPLOYMENT_TARGET})
 endif()
 
 # Set the target system on Windows (for cross-compiling x86)

README.md

@@ -184,7 +184,7 @@ this, add the following to your .npmrc, replacing 10.15 with your desired
 minimum macOS version:
 
 ```ini
-macos_deployment_target="10.15"
+macosx_deployment_target="10.15"
 ```
 
 </details>