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conan install verilator/4.034@ --build=verilator --profile:host=/Users/jenkins/w/BuildSingleReference/34082/7c1f8d6e-801b-4040-810b-65f081eb994b/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]
[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]

verilator/4.034: Forced build from source
Installing package: verilator/4.034
Requirements
    flex/2.6.4 from 'conan-center' - Cache
    m4/1.4.18 from 'conan-center' - Cache
    verilator/4.034 from local cache - Cache
Packages
    flex/2.6.4:08b63e87dd6803cb925df6e854a79a2d61c32575 - Missing
    m4/1.4.18:3eb32b976fb0626f3c40a8b87ace72156aa44204 - Download
    verilator/4.034:e02c07fc28b57b64dbd3f2531479a8d47079af98 - Build
Build requirements
    autoconf/2.71 from 'conan-center' - Cache
    automake/1.16.4 from 'conan-center' - Cache
    bison/3.7.6 from 'conan-center' - Cache
    flex/2.6.4 from 'conan-center' - Cache
    m4/1.4.18 from 'conan-center' - Cache
Build requirements packages
    autoconf/2.71:5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9 - Download
    automake/1.16.4:3c28ba69276b46fd46e9c2060ba991d725ccab43 - Download
    bison/3.7.6:ef2ed909580d08f58dee7d2eaa04c4b8c95b08cf - Download
    flex/2.6.4:ef2ed909580d08f58dee7d2eaa04c4b8c95b08cf - Download
    m4/1.4.18:801752c0480319b8e090188c566245a78e9abcf4 - Download

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

ERROR: Missing binary: flex/2.6.4:08b63e87dd6803cb925df6e854a79a2d61c32575
flex/2.6.4: WARN: Can't find a 'flex/2.6.4' 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
- Dependencies: m4/1.4.18
- Requirements: m4/1.Y.Z
- Package ID: 08b63e87dd6803cb925df6e854a79a2d61c32575

ERROR: Missing prebuilt package for 'flex/2.6.4'
Try to build from sources with '--build=flex'
Use 'conan search <reference> --table table.html'
Or read 'http://docs.conan.io/en/latest/faq/troubleshooting.html#error-missing-prebuilt-package'