******************************************************************************** conan install libltc/1.3.1@ --build=libltc --profile=C:\J\w\BuildSingleReference@3/17971/18094423-6751-4863-a909-1498af697491/profile.txt ******************************************************************************** Configuration: [settings] arch=x86_64 arch_build=x86_64 build_type=Debug compiler=Visual Studio compiler.runtime=MTd compiler.version=16 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:b2b69efcc79a149e0bc765fb12ba0278d52fc260 - Build Installing (downloading, building) binaries... libltc/1.3.1: Copying sources to build folder libltc/1.3.1: Building your package in C:\J\w\BuildSingleReference@3\.conan\data\libltc\1.3.1\_\_\build\b2b69efcc79a149e0bc765fb12ba0278d52fc260 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: Calling: > /c/j/w/buildsinglereference@3/.conan/data/libltc/1.3.1/_/_/build/b2b69efcc79a149e0bc765fb12ba0278d52fc260/source_subfolder/configure --disable-shared --enable-static --prefix=C:/J/w/BuildSingleReference@3/.conan/data/libltc/1.3.1/_/_/package/b2b69efcc79a149e0bc765fb12ba0278d52fc260 libltc/1.3.1: libltc/1.3.1: WARN: Build folder is dirty, removing it: C:\J\w\BuildSingleReference@3\.conan\data\libltc\1.3.1\_\_\build\b2b69efcc79a149e0bc765fb12ba0278d52fc260 libltc/1.3.1: WARN: Error running `configure --help`: Cannot recognize the Windows subsystem, install MSYS2/cygwin or specify a build_require to apply it. libltc/1.3.1: ERROR: Package 'b2b69efcc79a149e0bc765fb12ba0278d52fc260' build failed libltc/1.3.1: WARN: Build folder C:\J\w\BuildSingleReference@3\.conan\data\libltc\1.3.1\_\_\build\b2b69efcc79a149e0bc765fb12ba0278d52fc260 ERROR: libltc/1.3.1: Error in build() method, line 55 autotools = self._configure_autotools() while calling '_configure_autotools', line 51 self._autotools.configure(args=args, configure_dir=self._source_subfolder) ConanException: Cannot recognize the Windows subsystem, install MSYS2/cygwin or specify a build_require to apply it.