Re: [PATCH*2] mdadm works with uClibc from SVN

[Luca Berra <bluca@comedia.it>]

On Fri, Jun 23, 2006 at 08:45:47PM +0100, Nix wrote:
>On Fri, 23 Jun 2006, Neil Brown mused:
>> Is there some #define in an include file which will allow me to tell
>> if the current uclibc supports ftw or not?

it is not only depending on the uClibc version, but also if ftw support
was compiled in or not.

>I misspoke: ftw was split into multiple files in late 2005, but it was
>originally added in September 2003, in time for version 0.9.21.
>
>Obviously the #defines in <ftw.h> don't exist before that date, but
>that's a bit late to check, really.
>
><features.h> provides the macros __UCLIBC_MAJOR__, __UCLIBC_MINOR__, and
>__UCLIBC_SUBLEVEL__: versions above 0.9.20 appear to support ftw()
>(at least, they have the function, in 32-bit form at least, which
>is certainly enough for this application!)

the following would be the correct check.

#include <features.h>
#ifdef __UCLIBC_HAS_FTW__
.....
#else
.....
#endif /* __UCLIBC_HAS_FTW__ */


-- 
Luca Berra -- bluca@comedia.it
        Communication Media & Services S.r.l.
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