building gmp-6.1 for s390 (31-bit) w/asm disabled failing with undefined sdiv_qrnnd

[Mike Frysinger]

On 09 Dec 2016 22:29, Torbjörn Granlund wrote:
>   > When other packages rely on reverse engineering of GMP's internals, then
>   > things such as this are bound to happen.
>   
>   i don't think it's that simple
>   
>   and udiv_qrnnd in mpfr-longlong.h looks like:
>   /* If the processor has no udiv_qrnnd but sdiv_qrnnd, go through
>      __udiv_w_sdiv (defined in libgcc or elsewhere).  */
>   #if !defined (udiv_qrnnd) && defined (sdiv_qrnnd)
>   #define udiv_qrnnd(q, r, nh, nl, d) \
>     do {									\
>       UWtype __r;								\
>       (q) = __MPN(udiv_w_sdiv) (&__r, nh, nl, d);				\
>       (r) = __r;								\
>     } while (0)
>   #endif
>   
> Right.  The longlong.h file is shared among several GNU programs, but I
> long ago stopped trying to keep GMP's version easily usable outside of
> GMP.
> 
> In particular, GMP's longlong.h requires various external functions, and
> the condition under which these are needed are part of the internals.
> 
> This is a MPFR problem.  It is unfixable in GMP.

OK, i've moved this to MPFR's tracker:
	https://gforge.inria.fr/tracker/index.php?func=detail&aid=21053&group_id=136&atid=619
-mike
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