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conan install flex/2.6.4@ --build=flex --profile:host=/Users/jenkins/w/BuildSingleReference@2/26661/6efb4bfa-f409-442b-a275-cb9e566a0420/profile_host.txt --profile:build=default
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Auto detecting your dev setup to initialize the default profile (/Users/jenkins/w/BuildSingleReference@2/.conan/profiles/default)
Found apple-clang 12.0
Default settings
	os=Macos
	os_build=Macos
	arch=x86_64
	arch_build=x86_64
	compiler=apple-clang
	compiler.version=12.0
	compiler.libcxx=libc++
	build_type=Release
*** You can change them in /Users/jenkins/w/BuildSingleReference@2/.conan/profiles/default ***
*** Or override with -s compiler='other' -s ...s***


Configuration (profile_host):
[settings]
arch=armv8
build_type=Debug
compiler=apple-clang
compiler.libcxx=libc++
compiler.version=12.0
os=Macos
[options]
flex:shared=True
[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]

m4/1.4.18: Not found in local cache, looking in remotes...
m4/1.4.18: Trying with 'conan-center'...
Downloading conanmanifest.txt
Downloading conanfile.py
Downloading conan_export.tgz
m4/1.4.18: Downloaded recipe revision 92b62c5200e59ddc217d9c8aa9f4166c
flex/2.6.4: Forced build from source
Installing package: flex/2.6.4
Requirements
    flex/2.6.4 from local cache - Cache
    m4/1.4.18 from 'conan-center' - Downloaded
Packages
    flex/2.6.4:acdc1ec5d471d9e781a327773bd2da871f9e7b62 - Build
    m4/1.4.18:cb188579dd91605256b76b89243f76e7b4276240 - Download

Cross-build from 'Macos:x86_64' to 'Macos:armv8'
Installing (downloading, building) binaries...
m4/1.4.18: Retrieving package cb188579dd91605256b76b89243f76e7b4276240 from remote 'conan-center' 
Downloading conanmanifest.txt
Downloading conaninfo.txt
Downloading conan_package.tgz
m4/1.4.18: Package installed cb188579dd91605256b76b89243f76e7b4276240
m4/1.4.18: Downloaded package revision 3295239932999de904ba01ee495f11ee
m4/1.4.18: Appending PATH environment variable: /Users/jenkins/w/BuildSingleReference@2/.conan/data/m4/1.4.18/_/_/package/cb188579dd91605256b76b89243f76e7b4276240/bin
m4/1.4.18: Setting M4 environment variable: /Users/jenkins/w/BuildSingleReference@2/.conan/data/m4/1.4.18/_/_/package/cb188579dd91605256b76b89243f76e7b4276240/bin/m4
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
[HOOK - conan-center.py] post_package_info(): [LIBRARY DOES NOT EXIST (KB-H054)] OK
[HOOK - conan-center.py] pre_source(): [IMMUTABLE SOURCES (KB-H010)] OK
flex/2.6.4: Configuring sources in /Users/jenkins/w/BuildSingleReference@2/.conan/data/flex/2.6.4/_/_/source

[HOOK - conan-center.py] post_source(): [LIBCXX MANAGEMENT (KB-H011)] OK
[HOOK - conan-center.py] post_source(): [CPPSTD MANAGEMENT (KB-H022)] OK
flex/2.6.4: Copying sources to build folder
flex/2.6.4: Building your package in /Users/jenkins/w/BuildSingleReference@2/.conan/data/flex/2.6.4/_/_/build/acdc1ec5d471d9e781a327773bd2da871f9e7b62
flex/2.6.4: Generator txt created conanbuildinfo.txt
[HOOK - conan-center.py] pre_build(): [FPIC MANAGEMENT (KB-H007)] 'fPIC' option not found
[HOOK - conan-center.py] pre_build(): [FPIC MANAGEMENT (KB-H007)] OK
flex/2.6.4: Calling build()
flex/2.6.4: 
m4/1.4.18: WARN: Lib folder doesn't exist, can't collect libraries: /Users/jenkins/w/BuildSingleReference@2/.conan/data/m4/1.4.18/_/_/package/cb188579dd91605256b76b89243f76e7b4276240/lib
flex/2.6.4: ERROR: Package 'acdc1ec5d471d9e781a327773bd2da871f9e7b62' build failed
flex/2.6.4: WARN: Build folder /Users/jenkins/w/BuildSingleReference@2/.conan/data/flex/2.6.4/_/_/build/acdc1ec5d471d9e781a327773bd2da871f9e7b62
ERROR: flex/2.6.4: Invalid configuration: This recipe does not support cross building atm (missing conan support)