Googletest安装流程
1、从官网下载ubuntu下安装的source文件，下载链接为：
https://github.com/google/googletest.git
2、解压之后，cd到对应目录中，然后使用cmake进行编译，再进行make生成两个静态库libgtest.a libgtest_main.a，操作流程为：
cd ~/software/googletest-master
mkdir build
cd build
cmake ../googletest/
make
3、将步骤2中生成的两个库文件及/googletest/include/gtest文件，复制到用户目录下，操作如下：
sudo cp libgtest*.a /usr/lib
sudo cp -a /home/bruce/software/googletest-master/googletest/include/gtest /usr/include
至此Googletest就已经安装完成。
Googletest在make时报错
error: #error This file requires compiler and library support for the ISO C++ 2011 standard. This support must be enabled with the -std=c++11 or -std=gnu++11 compiler options.
…
…
cc1plus: all warnings being treated as errors
CMakeFiles/gtest.dir/build.make:62: recipe for target ‘CMakeFiles/gtest.dir/src/gtest-all.cc.o’ failed
make[2]: *** [CMakeFiles/gtest.dir/src/gtest-all.cc.o] Error 1
CMakeFiles/Makefile2:104: recipe for target ‘CMakeFiles/gtest.dir/all’ failed
make[1]: *** [CMakeFiles/gtest.dir/all] Error 2
Makefile:83: recipe for target ‘all’ failed
make: *** [all] Error 2
解决办法：
在安装包的googletest文件夹下(/home/bruce/software/googletest-master/googletest)找到CmakeLists.txt， 在其中添加如下语句：
SET(CMAKE_CXX_FLAGS "-std=c++0x")
再次make，便可以成功！