[R-pkg-devel] Cran submission - warning with windows (cpp build library gmp)

[Martin Maechler]

>>>>> Kevin Ushey 
>>>>>     on Fri, 22 Feb 2019 10:09:15 -0800 writes:

    > The 'long long' type does not exist in the C++98
    > standard, so you need to explicitly request C++11 or
    > C++14 (the former which is now fairly broadly supported
    > across compilers on different systems).

    > For more detail, see in the R extensions manual:

    > https://cran.r-project.org/doc/manuals/r-release/R-exts.html#Using-C_002b_002b11-code

    > Best, Kevin

Indeed, thank you, Kevin.

In this case, it simply needs an extra line
   CXX_STD = CXX11
added to gmp/src/Makevars.in
(already done now).

Martin

    > On Fri, Feb 22, 2019 at 5:08 AM Antoine Lucas
    > <antoinelucas using gmail.com> wrote:

    >> Dear all
    >> 
    >> I would like to update gmp package - this package link to
    >> a c++ library gmp.
    >> 
    >> But windows c++ compilation warns at:
    >> d:/Compiler/gcc-4.9.3/local330/include/gmp-x64.h:140:23:
    >> warning: ISO C++ 1998 does not support 'long long'
    >> [-Wlong-long]
    >> 
    >> I have not this warning on linux.  On my computer I build
    >> latest version on gmplib, and header is a little
    >> different and should not define a long long. I wonder if
    >> the warning could be fixed by an update of external c++
    >> library gmp.
    >> 
    >> How could I fix my package in order to pass the cran
    >> submission ?
    >> 
    >> Regards,
    >> 
    >> Antoine Lucas
    >> 
    >> gmp.h at line 140: #ifdef __GMP_SHORT_LIMB typedef
    >> unsigned int mp_limb_t; typedef int mp_limb_signed_t;
    >> #else #ifdef _LONG_LONG_LIMB typedef unsigned long long
    >> int mp_limb_t; typedef long long int mp_limb_signed_t;
    >> #else typedef unsigned long int mp_limb_t; typedef long
    >> int mp_limb_signed_t; #endif #endif