[Bug c++/53304] use of std::future results to relocation error with symbol _ZTINSt13__future_base19_Async_state_commonE

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53304

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-05-10 
14:39:15 UTC ---
http://gcc.gnu.org/onlinedocs/libstdc++/faq.html#faq.how_to_set_paths

You need to tell the dynamic linker how to find the 4.7 libs