how to tune libstdc++ to the native architecture when building gcc

Posted by John D on Super User See other posts from Super User or by John D
Published on 2012-06-08T03:35:25Z Indexed on 2012/06/08 4:42 UTC
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I recently found that when I build my C++ software, I get about a 10% speedup by using the g++ march=native option. When compiling gcc and libstc++, is it possible to tune the libstdc++ library to the native architecture as well? I couldn't find any mention of this in the gcc install configuration documentation. (I'm building gcc 4.6.2 on Linux Mint 11 with an Intel Core i7 Sandy Bridge-E processor.)

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