Compiling HelloDrone c++ on Ubuntu

[mmuetert]

I am trying to compile HelloDrone to get a feel for the C++ APIs. I am working in Ubuntu 18.04. I went to the folder AirSim/cmake/HelloDrone, created a build directory, changed to the build directory and ran cmake. It seemed to run alright, generating a bunch of files in build. I then tried to run make, but received the following errors:

/usr/bin/ld: cannot find -lAirLib
/usr/bin/ld: cannot find -lrpc

I know these mean the system can't find the libraries, but I don't know how to fix it. Can someone help? I am new to AirSim and C++, so apologies if this is a trivial problem.

[ahmed-elsaharti]

Hi @mmuetert , AFAIK when you build AirSim the script builds all the C++ projects included and generates executables under AirSim/build_release/output/bin (or at least thats what happened when I tested this)

[mmuetert]

Thank you for the response. I was able to find the code and execute it. That still leaves me with a question, though. If I were to write my own C++ program, created a CMakeList.txt file for it, and ran cmake and make, wouldn't I still run into the same issue that the compiler can't find those libraries?

Thanks!

[ahmed-elsaharti]

According to the guide all you need to do is setup the paths for the Include and Lib folders in cmake. I haven't tried it myself though.

[mmuetert]

I have read the guide and I can't figure it out how to properly make the cmakelist.txt file or where I need to to put my custom cpp files. Can we get more in depth tutorial about building custom C++ control files in Linux? the current documentation dedicates one sentence to Linux. I have tried reading through the cmake documentation to build the cmakelist files, but the files that come with AirSim seem to use different syntax than the cmake documentation/

thanks.

[rajat2004]

Maybe have a look at https://github.com/madratman/airsim_standalone, it might help in figuring out the problems

Did you run build.sh first before compiling your files, the error might be occurring since build.sh will first compile the static AirLib, etc libraries