fatal-error -> warning if realsense2-all cannot be targeted

Author: maloel

src/realsense2-all.cmake

@@ -104,7 +104,8 @@ function( bundle_static_library target_name bundle_name )
             VERBATIM )
 
     else()
-        message( FATAL_ERROR "Unknown bundle scenario!" )
+        message( WARNING "Unknown compiler setup; realsense2-all will not be available" )
+        return()
     endif()
 
     add_custom_target( ${bundle_name} ALL DEPENDS ${bundle_path} )