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Date: Mon, 12 Jun 2017 08:29:59 -0700
From: Bobby Powers <>
Subject: Re: more fun with non-Linux Linux ABI

On Sun, Jun 11, 2017 at 2:50 PM, Rich Felker <> wrote:
>> Such an option would most probably result in a pretty small performance
>> impact on modern (native) Linux.
> It's actually a pretty large impact; recent (4.x+ IIRC) versions of
> GNU makes are considerably slower because they dropped use of vfork
> and switched to fork rather than making it use posix_spawn like it
> should.

Do you know why they chose not to use posix_spawn?

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