[Bug 232802] libmpfr 4.0.1 missing required patches

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=232802

            Bug ID: 232802
           Summary: libmpfr 4.0.1 missing required patches
           Product: Ports & Packages
           Version: Latest
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: Individual Port(s)
          Assignee: ports-bugs at FreeBSD.org
          Reporter: dclarke at blastwave.org

The mpfr project releases patches on a regular schedule and these are 
quite important to normal function. 

Following test code will confirm : 

#define _XOPEN_SOURCE 600

#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <gmp.h>
#include <mpfr.h>

int main (int argc, char *argv[])
{

    printf("GMP library version : %d.%d.%d\n",
            __GNU_MP_VERSION,
            __GNU_MP_VERSION_MINOR,
            __GNU_MP_VERSION_PATCHLEVEL );

    printf("MPFR library: %-12s\n", mpfr_get_version ());
    printf("MPFR header: %s (based on %d.%d.%d)\n",
            MPFR_VERSION_STRING,
            MPFR_VERSION_MAJOR,
            MPFR_VERSION_MINOR,
            MPFR_VERSION_PATCHLEVEL);

    if (mpfr_buildopt_tls_p()!=0)
        printf("          : compiled as thread safe using TLS\n");

    if (mpfr_buildopt_float128_p()!=0) 
        printf("          : __float128 support enabled\n");

    if (mpfr_buildopt_decimal_p()!=0)
        printf("          : decimal float support enabled\n");

    if (mpfr_buildopt_gmpinternals_p()!=0)
        printf("          : compiled with GMP internals\n");

    if (mpfr_buildopt_sharedcache_p()!=0)
        printf("          : threads share cache per MPFR const\n");

    printf("MPFR thresholds file used at compile time : %s\n",
                                      mpfr_buildopt_tune_case ());

    return EXIT_SUCCESS;
}

Output on a system with up to date libmpfr should say : 
c$ ./ver
GMP library version : 6.1.2
MPFR library: 4.0.1-p13   
MPFR header: 4.0.1-p13 (based on 4.0.1)
          : compiled as thread safe using TLS
          : __float128 support enabled
MPFR thresholds file used at compile time : default
c$ 

Or perhaps : 
n0x$ ./ver
GMP library version : 6.1.2
MPFR library: 4.0.1-p13   
MPFR header: 4.0.1-p13 (based on 4.0.1)
MPFR thresholds file used at compile time : src/sparc64/mparam.h
n0x$ 

However FreeBSD 12.0 beta 2 reports : 

hydra $ uname -a 
FreeBSD hydra 12.0-BETA2 FreeBSD 12.0-BETA2 r339753 GENERIC  amd64
hydra $ ldd ver
ver:
        libgmp.so.10 => /usr/local/lib/libgmp.so.10 (0x800646000)
        libmpfr.so.6 => /usr/local/lib/libmpfr.so.6 (0x8006c9000)
        libc.so.7 => /lib/libc.so.7 (0x800742000)
hydra $ ./ver
GMP library version : 6.1.2
MPFR library: 4.0.1       
MPFR header: 4.0.1 (based on 4.0.1)
          : compiled as thread safe using TLS
MPFR thresholds file used at compile time : src/amd/k8/mparam.h
hydra $

Patches are trivial to apply and are available at the project site

    https://www.mpfr.org/mpfr-current/#download

See section "Bugs" there. 

Be advised that while both gmp and mpfr are compiler and system agnostic the
gcc compiler normally needs them during bootstrap phase and thus the gcc8 
package may also be updated but this is not strictly necessary.

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