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conan install mpc/1.2.1@ --profile=/Users/jenkins/w/BuildSingleReference@4/8766/efadb682-4ecd-4ed3-80c1-325e03c79143/profile.txt --build=mpc
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Configuration:
[settings]
arch=x86_64
arch_build=x86_64
build_type=Debug
compiler=apple-clang
compiler.libcxx=libc++
compiler.version=12.0
os=Macos
os_build=Macos
[options]
mpc:shared=False
[build_requires]
[env]

mpc/1.2.1: Forced build from source
Installing package: mpc/1.2.1
Requirements
    gmp/6.2.1 from 'conan-center' - Cache
    mpc/1.2.1 from local cache - Cache
    mpfr/4.1.0 from 'conan-center' - Cache
Packages
    gmp/6.2.1:a63c298310cf535d0477841588785ade0d4388a7 - Missing
    mpc/1.2.1:e2a5e7655c26de6713a7f864207e2168e2d3aee2 - Build
    mpfr/4.1.0:d4975e7f16e48fdbc541da81ecbc5eb8e40e1fd7 - Download

Installing (downloading, building) binaries...

ERROR: Missing binary: gmp/6.2.1:a63c298310cf535d0477841588785ade0d4388a7
gmp/6.2.1: WARN: Can't find a 'gmp/6.2.1' package for the specified settings, options and dependencies:
- Settings: arch=x86_64, build_type=Debug, compiler=apple-clang, compiler.libcxx=libc++, compiler.version=12.0, os=Macos
- Options: disable_assembly=True, enable_cxx=True, enable_fat=False, fPIC=True, run_checks=False, shared=False
- Dependencies: 
- Requirements: 
- Package ID: a63c298310cf535d0477841588785ade0d4388a7

ERROR: Missing prebuilt package for 'gmp/6.2.1'
Try to build from sources with '--build=gmp'
Use 'conan search <reference> --table table.html'
Or read 'http://docs.conan.io/en/latest/faq/troubleshooting.html#error-missing-prebuilt-package'