1. 安装链接：
ubuntu16.04安装ceres库_书生落拓的博客-CSDN博客_ceres安装
首先按照链接所示，解决安装前置项找不到源的问题：
sudo gedit /etc/apt/sources.list
添加：deb Index of /ubuntu trusty main universe
sudo apt-get update
2. 然而在1中cmake .. 后又会出现：
CMake Error at CMakeLists.txt:242 (find_package):
Could not find a configuration file for package "Eigen3" that is compatible
with requested version "3.3".
The following configuration files were considered but not accepted:
/usr/lib/cmake/eigen3/Eigen3Config.cmake, version: unknown
-- Configuring incomplete, errors occurred!
See also "/home/junchuan/Downloads/ceres-solver-master/build/CMakeFiles/CMakeOutput.log".
但是此时locate是能够发现eigen3的。
按照链接：
Ceres安装报错“找不到要求版本3.3的Eigen3”解决方法 - 咸鱼翻身！ - 博客园
发现现有的eigen是3.2.92，不是需要的3.3.4以上版本，需要重新安装eigen3.
按照以上链接下载3.3.7之后，不需要以下依赖项的安装：
sudo apt-get install libopenblas-dev
sudo apt-get install --no-install-recommends libboost1.58-all-dev
sudo apt-get install libx11-dev
sudo apt-get install libgl1-mesa-dev
sudo apt-get install libglu1-mesa-dev
sudo apt-get install freeglut3-dev
sudo apt-get install doxygen
sudo apt-get install cmake
sudo wget https://nchc.dl.sourceforge.net/project/glew/glew/2.1.0/glew-2.1.0.tgz --no-check-certificate
sudo tar -xzvf glew-2.1.0.tgz
cd glew-2.1.0/
sudo make
sudo make install
sudo ldconfig -v
直接执行：
mkdir build
cd build
cmake ..
make
sudo make install
sudo ldconfig -v
并且执行：
sudo cp -r /usr/local/include/eigen3 /usr/include/eigen3
sudo ln -s /usr/include/eigen3/Eigen /usr/include/Eigen
即可。
3. 继续执行1中的安装过程，没有再遇到阻碍。
