Media paths are fine already, the removed lines would screw them up.

--- a/CMake/InstallResources.cmake	2018-03-23 10:49:24.620486243 +0100
+++ b/CMake/InstallResources.cmake	2018-03-23 10:50:52.089485597 +0100
@@ -186,15 +186,6 @@
 
 # CREATE CONFIG FILES - BUILD DIR VERSIONS
 if (NOT (OGRE_BUILD_PLATFORM_APPLE_IOS OR WINDOWS_STORE OR WINDOWS_PHONE))
-	if( NOT APPLE )
-		set(OGRE_MEDIA_DIR_REL "${OGRE_SOURCE_DIR}/Samples/Media")
-		set(OGRE_MEDIA_DIR_DBG "${OGRE_SOURCE_DIR}/Samples/Media")
-	else()
-		set(OGRE_MEDIA_DIR_REL "Contents/Resources")
-		set(OGRE_MEDIA_DIR_DBG "Contents/Resources")
-	endif()
-	set(OGRE_TEST_MEDIA_DIR_REL "${OGRE_SOURCE_DIR}/Tests/Media")
-	set(OGRE_TEST_MEDIA_DIR_DBG "${OGRE_SOURCE_DIR}/Tests/Media")
 else ()
 	# iOS needs to use relative paths in the config files
 	set(OGRE_TEST_MEDIA_DIR_REL "${OGRE_MEDIA_PATH}")