------- Comment #2 from hjl dot tools at gmail dot com 2010-07-19 13:27 ------- The design of target attribute is incomplete and its implementation is broken. See PR 37565.
I'd like to see a new design/implementation. We should deal with all issues, including header files, in the new design/implementation. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44987