this post was submitted on 27 Nov 2023
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emacs lsp-mode with MPLAB X project (alien.top)
submitted 1 year ago by Big-Bluejay7122@alien.top to c/emacs
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For my hobby desktop c/c++ projects I started using emacs, and I really like it. I made my own config, which contains only a couple of packages like vertico, lsp-mode, company etc.

Professionally I am an embedded systems consultant, working with lot of different uC-s and IDE-s. I have a bigger job currently where I have to work with PIC32 uC, and the project is created with MPLAB X IDE. I wanted use emacs and lsp-mode, but it seems that clangd could not find some of the headers. I have generated the compile_commands.json with a python script called compiledb, but it is not working properly.... maybe clangd can not understand some of the compile flags from xc32-cc ? (the mplab compiler).

Anyone tried this stuff? Thx for help.

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[–] 7ie7an@alien.top 1 points 1 year ago

Hey,same situation here. I am not an emacs expert but am using it for around 6 years now.

My solution is to use clangd with a "compile_flags.txt" file in top level directory of the repository (and add it to ".git/info/exclude") to avoid an accidential commit.

The content is mostly project paths and additionally:

-include

c:/Users/USERNAME/.mchp_packs/Microchip/dsPICxxx/y.y.yyy/COMPILER/support/dsPICxxx/h/pxxx.h

-include

c:/Users/USERNAME/.mchp_packs/Microchip/dsPICxxx/y.y.yyy/COMPILER/support/generic/h/xc.h

-I

path/to/project.X/mcc_generated_files

-O0

-I

C:/MinGW/include

-D

__dsPICxxx__

​

The paths vary in Controller and pack that is used.

I also use "eglot" instead of "lsp-mode" simply because it's enough for me in functionality and I also have a "build.bat" at the top level of the repo that is used with the emacs internal compile command like "project-compile" (C-c p c).

- build.bat clean

- build.bat cleanbuild

- build.bat makefiles

- build.bat ...