我正在使用 Ubuntu 14.04，我想在 Ubuntu 中安装 eigen 3.3。我尝试下载最新版本的 Eigen 3 (3.3) 并安装如下
mkdir build
cd build
cmake ..
make
sudo make install
输出喜欢
-- Installing: /usr/local/include/eigen3/unsupported/Eigen/src/Skyline/SkylineStorage.h
-- Installing: /usr/local/include/eigen3/unsupported/Eigen/src/SparseExtra/RandomSetter.h
-- Installing: /usr/local/include/eigen3/unsupported/Eigen/src/SparseExtra/MarketIO.h
-- Installing: /usr/local/include/eigen3/unsupported/Eigen/src/SparseExtra/BlockOfDynamicSparseMatrix.h
-- Installing: /usr/local/include/eigen3/unsupported/Eigen/src/SparseExtra/DynamicSparseMatrix.h
-- Installing: /usr/local/include/eigen3/unsupported/Eigen/src/SparseExtra/MatrixMarketIterator.h
-- Installing: /usr/local/include/eigen3/unsupported/Eigen/src/Splines/SplineFwd.h
-- Installing: /usr/local/include/eigen3/unsupported/Eigen/src/Splines/SplineFitting.h
-- Installing: /usr/local/include/eigen3/unsupported/Eigen/src/Splines/Spline.h
但是，当我用 来检查我当前的特征版本时dpkg -p libeigen3-dev，输出是
Package: libeigen3-dev
Priority: extra
Section: libdevel
Installed-Size: 3729
Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com>
Architecture: all
Source: eigen3
Version: 3.2.0-8
Provides: libeigen2-dev
Depends: pkg-config
Suggests: libeigen3-doc, libmrpt-dev …