#51642: gcc49 @4.9.3: does not honor -march=native -------------------------+------------------- Reporter: noloader@… | Owner: mww@… Type: defect | Status: new Priority: Normal | Milestone: Component: ports | Version: 2.3.4 Resolution: | Keywords: Port: gcc49 | -------------------------+------------------- Comment (by vince@…): Replying to [comment:8 vince@…]:
I am sorry to butt in, but this sounds to me like the old 'as' story. GCC 4 use Apple-supplied /usr/bin/as (or /opt/local/bin/as for that matter):
{{{ as -v Apple Inc version cctools-877.8, GNU assembler version 1.38 }}} Which is so ancient it does not know about SSE 4 or AVX.
Clang has its own modern assembler, and can (maybe?) be used as a backend for GCC
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