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Date: Mon, 19 Apr 2021 11:23:00 -0400
From: Rich Felker <dalias@...c.org>
To: Jon Chesterfield <jonathanchesterfield@...il.com>
Cc: musl@...ts.openwall.com
Subject: Re: Requirements on code in libc headers
On Mon, Apr 19, 2021 at 09:05:20AM +0100, Jon Chesterfield wrote:
> Hello musl,
>
> I find myself implementing printf on a GPU without much compiler support.
> That's broadly working, if a bit macro + inline function themed. The intent
> is to eventually have all of musl running on the asic but that's a long
> game.
>
> Does anyone have a reference, or know offhand, what one is supposed to do
> for libc implementation code that lives in a header file?
>
> So far I have static inline on implementation functions and am putting
> __leading __underscores on function and variable names.
There's not a conforming way to make the standard library functions
entirely inline in headers, because they're required external
functions with a unique address. But assuming you don't care about
that for your purposes, yes, using only identifiers in the reserved
namespace (leading double underscore is the "most reserved" one and
probably best choice). So it sounds like you're on a good track.
Rich
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