No preference for use of exported glog CMake configuration set问题解决方法

Using these message generators: gencpp;geneus;genlisp;gennodejs;genpy
-- No preference for use of exported glog CMake configuration set, and no hints for include/library directories provided. Defaulting to preferring an installed/exported glog CMake configuration if available.
-- Failed to find installed glog CMake configuration, searching for glog build directories exported with CMake.
-- Failed to find an installed/exported CMake configuration for glog, will perform search for installed glog components.
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By not providing "FindCeres.cmake" in CMAKE_MODULE_PATH this project has
  asked CMake to find a package configuration file provided by "Ceres", but
  CMake did not find one.

  Could not find a package configuration file provided by "Ceres" with any of
  the following names:

    CeresConfig.cmake
    ceres-config.cmake

  Add the installation prefix of "Ceres" to CMAKE_PREFIX_PATH or set
  "Ceres_DIR" to a directory containing one of the above files.  If "Ceres"
  provides a separate development package or SDK, be sure it has been
  installed.

原因：Ceres库未正确安装。

参考链接：

https://www.cnblogs.com/qilai/p/13654810.html

http://ceres-solver.org/installation.html

安装Ceres库之前首先要安装依赖项：

// CMake
sudo apt-get install cmake
// google-glog + gflags
sudo apt-get install libgoogle-glog-dev libgflags-dev
// BLAS & LAPACK
sudo apt-get install libatlas-base-dev
// Eigen3
sudo apt-get install libeigen3-dev
// SuiteSparse and CXSparse (optional)
sudo apt-get install libsuitesparse-dev
//以下几个也建议检查一下
sudo apt-get install liblapack-dev
sudo apt-get install libsuitesparse-dev 
sudo apt-get install libcxsparse3.1.2 
sudo apt-get install libgtest-dev

出现了无法定位libcxsoarse3.1.2的问题，解决方法如下：

//第一步，打开sources.list
sudo gedit /etc/apt/sources.list
//第二步，将下面的源粘贴到最上方sources.list
deb http://cz.archive.ubuntu.com/ubuntu trusty main universe
//第三步，更新源
sudo apt-get update
//第四步，重新输入依赖项安装命令安装依赖项
sudo apt-get install libcxsparse3.1.2

然后再安装Ceres

//手动下载文件然后复制过来也行，效果一样的
git clone https://ceres-solver.googlesource.com/ceres-solver

tar zxf ceres-solver-2.0.0.tar.gz
mkdir ceres-bin
cd ceres-bin
cmake ../ceres-solver-2.0.0
make -j3
make test
// Optionally install Ceres, it can also be exported using CMake which
// allows Ceres to be used without requiring installation, see the documentation
// for the EXPORT_BUILD_DIR option for more information.
make install

刚才安装的Ceres版本是2.0.0，其编译默认是C++14。我这个CMakeList.txt里用的还是C++11所以报错了，把11改成14就OK了。找到你们自己要编译的东西，打开配置文件检查一下。