OS X: use link path for packaging to allow CMake infer library search dirs for @rpath resolving

CMakeLists.txt

@@ -297,8 +297,7 @@ if (APPLE)
     set(CMAKE_LIBRARY_OUTPUT_DIRECTORY "${APP_BUNDLE_DIR}/Contents/MacOS")
 
     if (OPENMW_OSX_DEPLOYMENT)
-        SET(CMAKE_BUILD_WITH_INSTALL_RPATH TRUE)
-        SET(CMAKE_INSTALL_RPATH_USE_LINK_PATH FALSE)
+        SET(CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE)
     endif()
 else (APPLE)
     set(CMAKE_RUNTIME_OUTPUT_DIRECTORY "${OpenMW_BINARY_DIR}")
@@ -787,8 +786,6 @@ if (APPLE)
     install_plugins_for_bundle("${INSTALL_SUBDIR}/${APP_BUNDLE_NAME}" PLUGINS)
     install_plugins_for_bundle("${INSTALL_SUBDIR}/${OPENCS_BUNDLE_NAME}" OPENCS_PLUGINS)
 
-    set(DIRS "${CMAKE_PREFIX_PATH}/lib")
-
     install(CODE "
         function(gp_item_default_embedded_path_override item  default_embedded_path_var)
             if (\${item} MATCHES ${OSG_PLUGIN_PREFIX_DIR})
@@ -798,8 +795,8 @@ if (APPLE)
         endfunction()
 
         cmake_policy(SET CMP0009 OLD)
-        fixup_bundle(\"${INSTALLED_OPENMW_APP}\" \"${PLUGINS}\" \"${DIRS}\")
-        fixup_bundle(\"${INSTALLED_OPENCS_APP}\" \"${OPENCS_PLUGINS}\" \"${DIRS}\")
+        fixup_bundle(\"${INSTALLED_OPENMW_APP}\" \"${PLUGINS}\" \"\")
+        fixup_bundle(\"${INSTALLED_OPENCS_APP}\" \"${OPENCS_PLUGINS}\" \"\")
         " COMPONENT Runtime)
     include(CPack)
 endif (APPLE)