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conan install tk/8.6.10@ --build=tk --profile:host=/Users/jenkins/w/BuildSingleReference@2/29856/b9e62f00-09aa-4693-bce3-33929e7c49ab/profile_host.txt --profile:build=default
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Configuration (profile_host):
[settings]
arch=armv8
build_type=Release
compiler=apple-clang
compiler.libcxx=libc++
compiler.version=12.0
os=Macos
[options]
tk:shared=False
[build_requires]
[env]

Configuration (profile_build):
[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]
[build_requires]
[env]

tk/8.6.10: Forced build from source
Installing package: tk/8.6.10
Requirements
    tcl/8.6.10 from 'conan-center' - Cache
    tk/8.6.10 from local cache - Cache
    zlib/1.2.11 from 'conan-center' - Cache
Packages
    tcl/8.6.10:68a3718d811c794b987fc5cf55a2682bd569538b - Missing
    tk/8.6.10:25077cad59b13b32a93d594d1ee11338487f64a3 - Build
    zlib/1.2.11:8fafab5ebfba468fd21a497cfee65cafe294bd9e - Download

Cross-build from 'Macos:x86_64' to 'Macos:armv8'
Installing (downloading, building) binaries...

ERROR: Missing binary: tcl/8.6.10:68a3718d811c794b987fc5cf55a2682bd569538b
tcl/8.6.10: WARN: Can't find a 'tcl/8.6.10' package for the specified settings, options and dependencies:
- Settings: arch=armv8, build_type=Release, compiler=apple-clang, compiler.version=12.0, os=Macos
- Options: fPIC=True, shared=False, zlib:fPIC=True, zlib:minizip=deprecated, zlib:shared=False
- Dependencies: zlib/1.2.11
- Requirements: zlib/1.Y.Z
- Package ID: 68a3718d811c794b987fc5cf55a2682bd569538b

ERROR: Missing prebuilt package for 'tcl/8.6.10'
Try to build from sources with '--build=tcl'
Use 'conan search <reference> --table table.html'
Or read 'http://docs.conan.io/en/latest/faq/troubleshooting.html#error-missing-prebuilt-package'