查找gazebo所有安装包：

dpkg -l | grep gazebo

删除所有包：

sudo apt-get remove gazebo7 gazebo7-common gazebo7-plugin-base libgazebo7:amd64 libgazebo7-dev:amd64 ros-kinetic-gazebo-*

安装gazebo：

1. sudo sh -c ‘echo “deb http://packages.osrfoundation.org/gazebo/ubuntu-stable `lsb_release -cs` main” > /etc/apt/sources.list.d/gazebo-stable.list’

2. wget https://packages.osrfoundation.org/gazebo.key -O - | sudo apt-key add -

3. sudo apt-get update

4. sudo apt-get install gazebo7

5. sudo apt-get install gazebo7-dev

参考：http://gazebosim.org/tutorials?tut=install_ubuntu&cat=install

安装其他库：“ignition”

sudo apt-get install libignition-math2-dev

安装ros依赖库：

sudo apt-get install ros-kinetic-gazebo-*