INT_MAX definition in gmp-impl.h conflicts with limits.h

[Vincent Lefevre]

On 2011-11-21 20:26:06 +0100, Marc Glisse wrote:
> Hello,
> 
> I was compiling gmp with clang (no issue except for the use of jb,pt in
> mpn/x86_64/mod_34lsub1.asm), and then I ran the testsuite and hit this
> issue: on linux, limits.h includes bits/xopen_lim.h which contains this
> code:
> 
> #ifdef INT_MAX
> # if INT_MAX == 32767
> #  define WORD_BIT      16
> ...
> 
> On the other hand, gmp-impl.h defines INT_MAX as something not
> preprocessor-friendly (with casts). The combination doesn't work.

We had similar problems too between MPFR and gmp-impl.h in the past.
The answer by Torbjorn was that gmp-impl.h is a GMP internal and
mustn't be included by users.

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