build gazebo from source

[ZhiangChen]

When building gazebo from source, there is a compiling error:
Could not find a package configuration file provided by "sdformat9"

[ZhiangChen]

As the answer suggested, this issue is caused by compatibility between gazebo and sdformat versions.

Solution:

• download gazebo 9 as .zip
• replace gazebo in /tmp

[ZhiangChen]

gazebo: error while loading shared libraries: libgazebo_common.so.9: cannot open shared object file: No such file or directory

[ZhiangChen]

environment configuration is incorrect. https://answers.gazebosim.org//question/1071/error-while-loading-shared-libraries/

export LD_LIBRARY_PATH=/usr/local/lib:$LD_LIBRARY_PATH
export PATH=/usr/local/bin:$PATH
export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig:$PKG_CONFIG_PATH
source /usr/local/share/gazebo-9/setup.sh