Re: fio-f1480f9: AIX 6.1 build KO against gcc function overlap

[Jens Axboe <axboe@kernel.dk>]

On 12/28/2015 05:56 PM, Thierry BERTAUD wrote:
> Jens,
>
>> Fixed that new dependency, try pulling again :-)
> Yes fixed, i just have some warning.
> ----
> t/dedupe.c: In function 'dedupe_check':
> t/dedupe.c:97:2: warning: 'bytes' may be used uninitialized in this function [-Wmaybe-uninitialized]
>    return (ret & ~((uint64_t)blocksize - 1));
>    ^
> t/dedupe.c:87:22: note: 'bytes' was declared here
>     unsigned long long bytes;
>                        ^

That's the aix compiler being a bit too dumb to realize that 'bytes' is 
only used for a zero return of that function. You can safely ignore 
that, I can add a small patch to get rid of it.

>      CC t/debug.o
> ----
>
> What's the advantage to use 'lex/yacc for arithmetic'?

That you can have arithmetical expressions in your job files, that's all 
it provides.

> I disabled it in configure because i can't build and haved the following:
> ---
>     LEX lex.yy.c
> 0: Warning: 1285-300 The o flag is not valid.
> 0: Error: 1285-331 Cannot read input file lex.yy.c
> Makefile:300: recipe for target 'lex.yy.c' failed
> gmake: *** [lex.yy.c] Error 1

Hmm, I'll see if I can add a check in configure for whether or not lex 
requires -o to specify an output file. For now, just use --disable-lex.

-- 
Jens Axboe