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conan install libltc/1.3.1@ --build=libltc --profile=C:\J\w\BuildSingleReference/18000/a7126408-bfa6-4fd5-b999-1b1b99b93083/profile.txt
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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]
libltc:shared=False
[build_requires]
[env]

libltc/1.3.1: Forced build from source
Installing package: libltc/1.3.1
Requirements
    libltc/1.3.1 from local cache - Cache
Packages
    libltc/1.3.1:df81ad20137149d7a51276fd3e24009b45e5964a - Build
Build requirements
    msys2/20200517 from 'conan-center' - Cache
Build requirements packages
    msys2/20200517:eee3fba89db6d777329de604625af8c30d46f080 - Cache

Installing (downloading, building) binaries...
msys2/20200517: Already installed!
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
libltc/1.3.1: Applying build-requirement: msys2/20200517
libltc/1.3.1: Copying sources to build folder
libltc/1.3.1: Building your package in C:\J\w\BuildSingleReference\.conan\data\libltc\1.3.1\_\_\build\df81ad20137149d7a51276fd3e24009b45e5964a
libltc/1.3.1: 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
libltc/1.3.1: Calling build()
libltc/1.3.1: 
msys2/20200517: WARN: Lib folder doesn't exist, can't collect libraries: C:\J\w\BuildSingleReference/s\6aea67\1\lib
libltc/1.3.1: WARN: Build folder is dirty, removing it: C:\J\w\BuildSingleReference\.conan\data\libltc\1.3.1\_\_\build\df81ad20137149d7a51276fd3e24009b45e5964a
libltc/1.3.1: ERROR: Package 'df81ad20137149d7a51276fd3e24009b45e5964a' build failed
libltc/1.3.1: WARN: Build folder C:\J\w\BuildSingleReference\.conan\data\libltc\1.3.1\_\_\build\df81ad20137149d7a51276fd3e24009b45e5964a
ERROR: libltc/1.3.1: Error in build() method, line 75
	with self._build_context():
	AttributeError: