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conan install mpc/1.2.1@ --profile=/Users/jenkins/w/BuildSingleReference@2/10554/055c60ca-001d-4fbf-99c2-4c95859c6c5f/profile.txt --build=mpc
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Configuration:
[settings]
arch=x86_64
arch_build=x86_64
build_type=Release
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/6.2.1:837b8bd4b4b2897ee56e68a306262b675c54b33c - Missing
    mpc/1.2.1:861deaa4d81ec64c5d075ca1b0fbc7ef6ac590be - Build
    mpfr/4.1.0:3f4e313d395b480f94dd58eb84f65be8412578e7 - Download

Installing (downloading, building) binaries...

ERROR: Missing binary: gmp/6.2.1:837b8bd4b4b2897ee56e68a306262b675c54b33c
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=Release, 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: 837b8bd4b4b2897ee56e68a306262b675c54b33c

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'