Fix for missing MultiOccupancyGrid.h

[madasebrof]

If you try to build on a clean machine (tested on 18.04 & 20.04), you'll get an error due to a missing header file multi_map_server/MultiOccupancyGrid.h.

To fix this, edit the file:

src/uav_simulator/Utils/multi_map_server/CMakeLists.txt

Comment out the executable generation code per below:

## Declare a cpp executable
# COMMENT OUT FOR FIRST COMPILE PASS
# add_executable(multi_map_visualization src/multi_map_visualization.cc)

## Add cmake target dependencies of the executable/library
## as an example, message headers may need to be generated before nodes
# COMMENT OUT FOR FIRST COMPILE PASS
# add_dependencies(multi_map_visualization multi_map_server_messages_cpp)

## Specify libraries to link a library or executable target against
# COMMENT OUT FOR FIRST COMPILE PASS
# target_link_libraries(multi_map_visualization
#    ${catkin_LIBRARIES}
#    ${ARMADILLO_LIBRARIES}
#   pose_utils
# )

Then compile first pass, e.g.

catkin_make -j1

Now, you'll have devel/include/multi_map_server/MultiOccupancyGrid.h available.

Then, uncomment the file:

## Declare a cpp executable
# COMMENT OUT FOR FIRST COMPILE PASS
add_executable(multi_map_visualization src/multi_map_visualization.cc)

## Add cmake target dependencies of the executable/library
## as an example, message headers may need to be generated before nodes
# COMMENT OUT FOR FIRST COMPILE PASS
add_dependencies(multi_map_visualization multi_map_server_messages_cpp)

## Specify libraries to link a library or executable target against
# COMMENT OUT FOR FIRST COMPILE PASS
target_link_libraries(multi_map_visualization
   ${catkin_LIBRARIES}
   ${ARMADILLO_LIBRARIES}
   pose_utils
)

and recompile:

catkin_make -DCMAKE_BUILD_TYPE=Release -j1

Should work now!

[bigsuperZZZX]

Thank you for this instruction! Hoping it will help someone in need.

[Zoe20224]

really useful! Your suggestion helped me a lot! Thx!

[Mercy2Green]

Really useful! Thanks！！ 希望作者也可以更新一下项目的说明文件部分，加上这个解决办法！ 谢谢！！！