********************************************************************************
conan install libtool/2.4.6@ --build=libtool --profile=C:\J\w\BuildSingleReference/29320/18983637-ce89-46f5-8fef-9ff808476695/profile.txt
********************************************************************************
Configuration:
[settings]
arch=x86_64
arch_build=x86_64
build_type=Release
compiler=Visual Studio
compiler.runtime=MT
compiler.version=15
os=Windows
os_build=Windows
[options]
libtool:shared=False
[build_requires]
[env]

libtool/2.4.6: Forced build from source
Installing package: libtool/2.4.6
Requirements
    autoconf/2.71 from 'conan-center' - Cache
    automake/1.16.3 from 'conan-center' - Cache
    libtool/2.4.6 from local cache - Cache
    m4/1.4.18 from 'conan-center' - Cache
Packages
    autoconf/2.71:3475bd55b91ae904ac96fde0f106a136ab951a5e - Cache
    automake/1.16.3:3e48e69237f7f2196164383ef9dedf0f93cbf249 - Cache
    libtool/2.4.6:df56c2b4f8e488bbd25eedb52fba643c7d59c97f - Build
    m4/1.4.18:0a420ff5c47119e668867cdb51baff0eca1fdb68 - Cache
Build requirements
    gnu-config/cci.20201022 from 'conan-center' - Cache
    msys2/cci.latest from 'conan-center' - Cache
Build requirements packages
    gnu-config/cci.20201022:5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9 - Cache
    msys2/cci.latest:eee3fba89db6d777329de604625af8c30d46f080 - Cache

Installing (downloading, building) binaries...
gnu-config/cci.20201022: Already installed!
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
m4/1.4.18: Already installed!
m4/1.4.18: Appending PATH environment variable: C:\J\w\BuildSingleReference\.conan\data\m4\1.4.18\_\_\package\0a420ff5c47119e668867cdb51baff0eca1fdb68\bin
m4/1.4.18: Setting M4 environment variable: C:/J/w/BuildSingleReference/.conan/data/m4/1.4.18/_/_/package/0a420ff5c47119e668867cdb51baff0eca1fdb68/bin/m4.exe
[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/cci.latest: Already installed!
msys2/cci.latest: Creating MSYS_ROOT env var : C:\J\w\BuildSingleReference/s\4750c2\1\bin\msys64
msys2/cci.latest: Creating MSYS_BIN env var : C:\J\w\BuildSingleReference/s\4750c2\1\bin\msys64\usr\bin
msys2/cci.latest: Appending PATH env var with : C:\J\w\BuildSingleReference/s\4750c2\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
autoconf/2.71: Already installed!
autoconf/2.71: Appending PATH env var with : C:\J\w\BuildSingleReference\.conan\data\autoconf\2.71\_\_\package\3475bd55b91ae904ac96fde0f106a136ab951a5e\bin
autoconf/2.71: Setting AC_MACRODIR to C:\J\w\BuildSingleReference\.conan\data\autoconf\2.71\_\_\package\3475bd55b91ae904ac96fde0f106a136ab951a5e\bin\share\autoconf
autoconf/2.71: Setting AUTOCONF to /c/j/w/buildsinglereference/.conan/data/autoconf/2.71/_/_/package/3475bd55b91ae904ac96fde0f106a136ab951a5e/bin/autoconf.exe
autoconf/2.71: Setting AUTORECONF to /c/j/w/buildsinglereference/.conan/data/autoconf/2.71/_/_/package/3475bd55b91ae904ac96fde0f106a136ab951a5e/bin/autoreconf.exe
autoconf/2.71: Setting AUTOHEADER to /c/j/w/buildsinglereference/.conan/data/autoconf/2.71/_/_/package/3475bd55b91ae904ac96fde0f106a136ab951a5e/bin/autoheader.exe
autoconf/2.71: Setting AUTOM4TE to /c/j/w/buildsinglereference/.conan/data/autoconf/2.71/_/_/package/3475bd55b91ae904ac96fde0f106a136ab951a5e/bin/autom4te.exe
autoconf/2.71: Setting AUTOM4TE_PERLLIBDIR to C:\J\w\BuildSingleReference\.conan\data\autoconf\2.71\_\_\package\3475bd55b91ae904ac96fde0f106a136ab951a5e\bin\share\autoconf
[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
automake/1.16.3: Already installed!
automake/1.16.3: Appending PATH env var with : C:\J\w\BuildSingleReference\.conan\data\automake\1.16.3\_\_\package\3e48e69237f7f2196164383ef9dedf0f93cbf249\bin
automake/1.16.3: Setting ACLOCAL to /c/j/w/buildsinglereference/.conan/data/automake/1.16.3/_/_/package/3e48e69237f7f2196164383ef9dedf0f93cbf249/bin/aclocal.exe
automake/1.16.3: Setting AUTOMAKE_DATADIR to /c/j/w/buildsinglereference/.conan/data/automake/1.16.3/_/_/package/3e48e69237f7f2196164383ef9dedf0f93cbf249/bin/share
automake/1.16.3: Setting AUTOMAKE_LIBDIR to /c/j/w/buildsinglereference/.conan/data/automake/1.16.3/_/_/package/3e48e69237f7f2196164383ef9dedf0f93cbf249/bin/share/automake-1.16
automake/1.16.3: Setting AUTOMAKE_PERLLIBDIR to /c/j/w/buildsinglereference/.conan/data/automake/1.16.3/_/_/package/3e48e69237f7f2196164383ef9dedf0f93cbf249/bin/share/automake-1.16
automake/1.16.3: Setting AUTOMAKE to /c/j/w/buildsinglereference/.conan/data/automake/1.16.3/_/_/package/3e48e69237f7f2196164383ef9dedf0f93cbf249/bin/automake.exe
automake/1.16.3: Append M4 include directories to AUTOMAKE_CONAN_INCLUDES environment variable
[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
libtool/2.4.6: Applying build-requirement: gnu-config/cci.20201022
libtool/2.4.6: Applying build-requirement: msys2/cci.latest
libtool/2.4.6: Copying sources to build folder
libtool/2.4.6: Building your package in C:\J\w\BuildSingleReference\.conan\data\libtool\2.4.6\_\_\build\df56c2b4f8e488bbd25eedb52fba643c7d59c97f
libtool/2.4.6: 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
libtool/2.4.6: Calling build()
**********************************************************************
** Visual Studio 2017 Developer Command Prompt v15.9.19
** Copyright (c) 2017 Microsoft Corporation
**********************************************************************
[vcvarsall.bat] Environment initialized for: 'x64'
libtool/2.4.6: 
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
m4/1.4.18: WARN: Lib folder doesn't exist, can't collect libraries: C:\J\w\BuildSingleReference\.conan\data\m4\1.4.18\_\_\package\0a420ff5c47119e668867cdb51baff0eca1fdb68\lib
autoconf/2.71: WARN: Lib folder doesn't exist, can't collect libraries: C:\J\w\BuildSingleReference\.conan\data\autoconf\2.71\_\_\package\3475bd55b91ae904ac96fde0f106a136ab951a5e\lib
automake/1.16.3: WARN: Lib folder doesn't exist, can't collect libraries: C:\J\w\BuildSingleReference\.conan\data\automake\1.16.3\_\_\package\3e48e69237f7f2196164383ef9dedf0f93cbf249\lib
libtool/2.4.6: WARN: Build folder is dirty, removing it: C:\J\w\BuildSingleReference\.conan\data\libtool\2.4.6\_\_\build\df56c2b4f8e488bbd25eedb52fba643c7d59c97f
libtool/2.4.6: ERROR: Package 'df56c2b4f8e488bbd25eedb52fba643c7d59c97f' build failed
libtool/2.4.6: WARN: Build folder C:\J\w\BuildSingleReference\.conan\data\libtool\2.4.6\_\_\build\df56c2b4f8e488bbd25eedb52fba643c7d59c97f
ERROR: libtool/2.4.6: Error in build() method, line 107
	autotools = self._configure_autotools()
while calling '_configure_autotools', line 80
	if self.settings.compiler == "Visual Studio" and tools.Verson(self.settings.compiler.version) >= "12":
	AttributeError: module 'conans.tools' has no attribute 'Verson'