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conan install libffi/3.3@ --build=libffi --profile=C:\J\w\BuildSingleReference/13677/d91e733c-d4b1-4cc8-872d-2a57f272eed1/profile.txt
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Auto detecting your dev setup to initialize the default profile (C:\J\w\BuildSingleReference\.conan\profiles\default)
Found Visual Studio 16
Default settings
	os=Windows
	os_build=Windows
	arch=x86_64
	arch_build=x86_64
	compiler=Visual Studio
	compiler.version=16
	build_type=Release
*** You can change them in C:\J\w\BuildSingleReference\.conan\profiles\default ***
*** Or override with -s compiler='other' -s ...s***


Configuration:
[settings]
arch=x86_64
arch_build=x86_64
build_type=Release
compiler=Visual Studio
compiler.runtime=MT
compiler.version=14
os=Windows
os_build=Windows
[options]
libffi:shared=False
[build_requires]
[env]

libffi/3.3: Forced build from source
msys2/20200517: Not found in local cache, looking in remotes...
msys2/20200517: Trying with 'conan-center'...
Downloading conanmanifest.txt
Downloading conanfile.py
Downloading conan_export.tgz
msys2/20200517: Downloaded recipe revision 1899c03f61cc8cd6484a01e5be739a27
gnu-config/cci.20201022: Not found in local cache, looking in remotes...
gnu-config/cci.20201022: Trying with 'conan-center'...
Downloading conanmanifest.txt
Downloading conanfile.py
Downloading conan_export.tgz
gnu-config/cci.20201022: Downloaded recipe revision c9b5dccbc620ae581bb1c60547ced620
Installing package: libffi/3.3
Requirements
    libffi/3.3 from local cache - Cache
Packages
    libffi/3.3:df81ad20137149d7a51276fd3e24009b45e5964a - Build
Build requirements
    gnu-config/cci.20201022 from 'conan-center' - Downloaded
    msys2/20200517 from 'conan-center' - Downloaded
Build requirements packages
    gnu-config/cci.20201022:5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9 - Download
    msys2/20200517:eee3fba89db6d777329de604625af8c30d46f080 - Download

Installing (downloading, building) binaries...
gnu-config/cci.20201022: Retrieving package 5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9 from remote 'conan-center' 
Downloading conanmanifest.txt
Downloading conaninfo.txt
Downloading conan_package.tgz
gnu-config/cci.20201022: Package installed 5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9
gnu-config/cci.20201022: Downloaded package revision d6aaee4f4cf0595e88e457b9513071c7
msys2/20200517: Retrieving package eee3fba89db6d777329de604625af8c30d46f080 from remote 'conan-center' 
Downloading conanmanifest.txt
Downloading conaninfo.txt
Downloading conan_package.tgz
.msys2/20200517: Package installed eee3fba89db6d777329de604625af8c30d46f080
msys2/20200517: Downloaded package revision 2733b256824bd060943a72580782f871
gnu-config/cci.20201022: Appending PATH environment variable: C:\J\w\BuildSingleReference\.conan\data\gnu-config\cci.20201022\_\_\package\5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9\bin
[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
msys2/20200517: Creating MSYS_ROOT env var : C:\J\w\BuildSingleReference/s\6aea67\1\bin\msys64
msys2/20200517: Creating MSYS_BIN env var : C:\J\w\BuildSingleReference/s\6aea67\1\bin\msys64\usr\bin
msys2/20200517: Appending PATH env var with : C:\J\w\BuildSingleReference/s\6aea67\1\bin\msys64\usr\bin
[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
libffi/3.3: Applying build-requirement: msys2/20200517
libffi/3.3: Applying build-requirement: gnu-config/cci.20201022
[HOOK - conan-center.py] pre_source(): [IMMUTABLE SOURCES (KB-H010)] OK
libffi/3.3: Configuring sources in C:\J\w\BuildSingleReference\.conan\data\libffi\3.3\_\_\source

[HOOK - conan-center.py] post_source(): [LIBCXX MANAGEMENT (KB-H011)] OK
[HOOK - conan-center.py] post_source(): [CPPSTD MANAGEMENT (KB-H022)] OK
libffi/3.3: Copying sources to build folder
libffi/3.3: Building your package in C:\J\w\BuildSingleReference\.conan\data\libffi\3.3\_\_\build\df81ad20137149d7a51276fd3e24009b45e5964a
libffi/3.3: 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
libffi/3.3: Calling build()
libffi/3.3: 
gnu-config/cci.20201022: WARN: Lib folder doesn't exist, can't collect libraries: C:\J\w\BuildSingleReference\.conan\data\gnu-config\cci.20201022\_\_\package\5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9\lib
msys2/20200517: WARN: Lib folder doesn't exist, can't collect libraries: C:\J\w\BuildSingleReference/s\6aea67\1\lib
libffi/3.3: ERROR: Package 'df81ad20137149d7a51276fd3e24009b45e5964a' build failed
libffi/3.3: WARN: Build folder C:\J\w\BuildSingleReference\.conan\data\libffi\3.3\_\_\build\df81ad20137149d7a51276fd3e24009b45e5964a
ERROR: libffi/3.3: Error in build() method, line 134
	shutil.copy(self.user_info_build["gnu-config"].CONFIG_SUB,
	AttributeError: 'LibffiConan' object has no attribute 'user_info_build'