How to handle external dependencies in external message definitions

[GorgiAstro]

Hello folks,

I defined an external C++ message definition named in this case ControlErrorMsgPayload.h, in the subfolder msgPayloadDefCpp of my custom BSK folder following the naming conventions from here http://hanspeterschaub.info/basilisk/Install/buildExtModules.html

I am using Basilisk 2.2.0. The code of my custom C++ message definition is the following:

#ifndef CONTROLERROR_MSG_H
#define CONTROLERROR_MSG_H

#include "ControlError.hpp"

/**
 * Basilisk wrapper for TUBiX20 ControlError
 */
typedef struct {
    tbx20_adcs::ControlError controlError;
} ControlErrorMsgPayload;

#endif

Where ControlError.hpp is in our codebase so in another folder not related to basilisk.

When compiling Basilisk (with python conanfile.py --pathToExternalModules ../tubix20-lib/adcs/basilisk/), I am getting the following error, as unsurprisingly, the compiler is not able to find ControlError.hpp:

In file included from /media/ssd/git/basilisk/dist3/Basilisk/architecture/messaging/ControlErrorMsgPayloadPYTHON_wrap.cxx:2847:
/media/ssd/git/tubix20-lib/adcs/basilisk/msgPayloadDefCpp/ControlErrorMsgPayload.h:4:10: fatal error: ControlError.hpp: No such file or directory
    4 | #include "ControlError.hpp"
      |          ^~~~~~~~~~~~~~~~~~
compilation terminated.

How can I define the path for such external dependencies in external message definitions? For my custom modules, I solved that with Custom.cmake CMakefiles, but for message definitions I don't see this possibility.

Cheers
Clément

[GorgiAstro]

Update: I also tried to place the ControlError.hpp file in the ExternalModules/_GeneralModuleFiles folder, and also to rename it to ControlError.h, without success, this header file is not found when compiling the message definition.

I tried to edit basilisk's CMakeLists.txt, but couldn't find out what changes are needed to do that, I don't know enough about CMake.

[schaubh]

I'm assuming you are using Windows? I would ensure that your PATH variable includes the path to these custom support files.

[GorgiAstro]

Thank you for the advice. I am using Linux (Ubuntu 22.10).

I tried adding the path to the relevant support file to the PATH environment variable: export PATH=$PATH:/media/ssd/git/tubix20-lib/math/main/api/, but I still get the same issue. And I don't see any mention of the CMake ENV function in the CMakeLists.txt in order to read environment variables.