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Date: Tue, 5 Mar 2002 00:35:57 -0500
From: Mike Barcroft <mike@FreeBSD.org>
To: Garance A Drosihn <drosih@rpi.edu>
Cc: freebsd-standards@FreeBSD.org
Subject: Re: netinet/in.h  vs  arpa/inet.h
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In-Reply-To: <p05101502b8aa0629a3ff@[128.113.24.47]>; from drosih@rpi.edu on Tue, Mar 05, 2002 at 12:31:11AM -0500
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Garance A Drosihn <drosih@rpi.edu> writes:
> Now that I've finally got myself switched over to 5.0-current,
> I'm getting back to some lpr changes.  I notice that if I
> compile lpr with -Wredundant-decls, I get a few warnings from
> source files which have:
> 
> #include <netinet/in.h>
> #include <arpa/inet.h>
> 
> Eg:
>     /usr/include/arpa/inet.h:127: warning: redundant redeclaration of 
> `__htonl' in same scope
>     /usr/include/machine/endian.h:67: warning: previous declaration of `__htonl'
> 
> (plus similar warnings for __htons __ntohl __ntohs)
> 
> Now, I find I can just comment out the include for arpa/inet.h,
> and everything compiles OK (on both current and stable, if I've
> tested correctly..).  On the other hand, I do not get these
> warnings even if I compile with -Wredundant-decls on -stable.
> 
> Should I just remove the arpa/inet.h, or does this indicate that
> something isn't quite perfect with the recent changes to various
> include files under -current?

This should be fixed shortly.  The problem mainly stems from POSIX's
requirements for the ntohl() family of functions to be defined in
multiple headers.

Best regards,
Mike Barcroft

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