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From: ojab <ojab@ojab.ru>
Newsgroups: gmane.linux.lib.musl.general
Subject: Re: SoX & pipe rewinding
Date: Fri, 14 Dec 2012 17:51:40 +0400
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On 14.12.2012 17:40, Rich Felker wrote:
> On Fri, Dec 14, 2012 at 05:35:52PM +0400, ojab wrote:
>> >Hi list,
>> >SoX use some kind of hackery for pipe rewinding (see the attached
>> >file). So I have two questions:
>> >1. If something like that possible using musl?
>> >2. Is there any musl specific #define?
> I don't believe so. Not only does this hack depend on knowing the
> internals of FILE (which are intentionally opaque on musl); it also
> depends on the assumption that the data is still present in the buffer
> after it's consumed, which is invalid in general.
>
> No idea why programmers insist on doing stuff like this rather than
> fixing their design issues...
>
> Rich
>

It's completely optional (check the #else part), so question is (2): How 
we can check for musl and disable pipe rewinding in this case.
If there is no musl-specific define, and there is intention not to add 
one — I'll file a bug in SoX tracker with request to remove an #error.

//wbr ojab.