25f5742f0b
Summary: Rocksdb currently has many references to std::map.emplace_back() which is not implemented in gcc 4.7, but valid in gcc 4.8. Confirmed that it did not build with gcc 4.7, but builds fine with gcc 4.8 Closes https://github.com/facebook/rocksdb/pull/1272 Differential Revision: D4101385 Pulled By: IslamAbdelRahman fbshipit-source-id: f6af453