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Add library paths on Eclipse IDE C/C++ 4.20.0 [message #1848383]

Tue, 30 November 2021 07:38

Eclipse User

I'm using Eclipse IDE C/C++ (version: 2021-06 (4.20.0)) with IDF plugging and I would like to use external libraries besides of ESP-IDF libraries. I read this IDE version doesn't include a menú option to add library paths, and if want to use external libraries I must créate a folder into my Project and copy them in it, and finally modify CMakeLists.txt file to include the following code line: set(COMPONENT_ADD_INCLUDEDIRS "../folder_name").

When I compile an example which includes a function which belongs to an external library I get the error "undefined reference to 'function_name'.

Are correctly the steps that I followed or there is another way to add external libraries?

Thank you for your reply.

Re: Add library paths on Eclipse IDE C/C++ 4.20.0 [message #1848390 is a reply to message #1848383]

Tue, 30 November 2021 12:56

Eclipse User

It seems that you're using CMake to build the program, so the question is actually off-topic for Eclipse CDT.

To include an external module or library, you need to do two things:

- tell the compiler how to compile proper calls to the module. This is done by including the header file to the compilation,

- tell the linker where to get the library code from. This is done by adding the module object code or library code to the linker arguments.

If I interpreted your question properly, you have done the first thing, but not the second one. Please get the CMake documentation to see how to add the library to your CMakelists.txt.

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