むぅ。
http://cygwin.com/ml/cygwin-xfree/2009-06/msg00048.html
It's really somewhat of an urban myth about Cygwin's fork being slow.
Cygwin's exec is also pretty slow. I'm not really sure that posix_spawn
would cause any kind of performance improvement.
経験的に、configureはとてつもなく遅く、makeは無駄に遅いと感じるんですが、パス変換なども含めて総合的に遅いということなんでしょうか。。。
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