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Date: Fri, 30 Dec 2016 17:42:38 -0500
From: Rich Felker <>
Subject: Re: SUSv2 c89 compilation environment symbols missing

On Fri, Dec 30, 2016 at 04:30:13PM -0600, Laine Gholson wrote:
> musl defines, e.g _SC_XBS5_ILP32_OFF32, but not _CS_XBS5_ILP32_OFF32_CFLAGS
> see

That's an ancient standard; the current one is here:

It does not mention the macros you asked about. But it's also
describing the getconf utility, not the unistd.h header. The latter is

and I don't see anything about the above macros. For what it's worth,
even the old version corresponding to the page you linked doesn't seem
to specify them:


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