稀里糊涂用了多年C++，至今不会装Boost 和Eigen3
今天尝试安装libpointmatcher
之前是用vcpkg装的boost，可能是因为没有添加环境变量，cmake-gui总是报错。
于是按照libpointmatcher的教程重新安装一遍Boost ：Installation of libpointmatcher on Windows using MSVC
这应该是我见过写得比较清晰明了的Boost 安装教程了。
包括后面的cmake-gui教程都很清晰明了。难得一见，故记录一下。
Install Boost
Download
boost_<version>.zipExtract
boost_<version>inC:\dev-
Go to your Boost source directory with your CLI, and do:
.\bootstrap.bat .\b2.exe Set the following three environment variables:
BOOST_LIBRARYDIR = C:\dev\boost_<version>\stage\lib
BOOST_INCLUDEDIR = C:\dev\boost_<version>
BOOST_DIR = C:\dev\boost_<version>\stage\lib\cmake\Boost-<version>Add
C:\dev\boost_<version>\stage\libtoPathenvironment variable
Install Eigen3
Eigen is header only (see Eigen's "Getting stated" page) and don't need to be build.
- Download
eigen-<version>.zip - Extract
eigen-<version>inC:\dev - Set
EIGEN3_INC_DIRenvironment variable toC:\dev\eigen-<version>(folder withsignature_of_eigen3_matrix_libraryfile)
