I am following this which is the script installs everything you need: PX4, ROS “Kinetic”, the Gazebo 7 simulator, and MAVROS.
source ubuntu_sim_ros_gazebo.sh
here the end message before error:
Workspace configuration appears valid.
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[build] Found '1' packages in 0.0 seconds.
[build] Package table is up to date.
Starting >>> px4
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Errors << px4:make /home/yograj/logs/px4/build.make.003.log
make[2]: *** [uORB/topics/actuator_armed.h] Error 1
make[1]: *** [msg/CMakeFiles/uorb_headers.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....
make[2]: *** [src/lib/mixer/mixer_multirotor_normalized.generated.h] Error 1
make[2]: *** Waiting for unfinished jobs....
make[2]: *** [src/lib/mixer/mixer_multirotor.generated.h] Error 1
make[1]: *** [src/lib/mixer/CMakeFiles/mixer_gen.dir/all] Error 2
make: *** [all] Error 2
cd /home/yograj/build/px4; catkin build --get-env px4 | catkin env -si /usr/bin/make --jobserver-fds=6,7 -j;
cd -
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Failed << px4:make [ Exited with code 2 ]
Failed <<< px4 [ 0.3 seconds ]
[build] Summary: 0 of 1 packages succeeded.
[build] Ignored: None.
[build] Warnings: None.
[build] Abandoned: None.
[build] Failed: 1 packages failed.
[build] Runtime: 0.3 seconds total.
ROS catkin_ws setup.bash already in .bashrc