These was already configured above, the BINARY paths are wrong!

--- a/CMake/InstallResources.cmake	2019-11-06 08:12:01.271816772 +0100
+++ b/CMake/InstallResources.cmake	2019-11-06 08:13:15.623814658 +0100
@@ -188,8 +188,6 @@
   set(OGRE_PLUGIN_DIR_REL "Contents/Frameworks/")
   set(OGRE_SAMPLES_DIR_REL "Contents/Plugins/")
 elseif (UNIX)
-  set(OGRE_PLUGIN_DIR_REL "${PROJECT_BINARY_DIR}/lib")
-  set(OGRE_SAMPLES_DIR_REL "${PROJECT_BINARY_DIR}/lib")
 endif ()
 
 if(OGRE_BUILD_SAMPLES)