nvim-lint with gcc

[ghost]

Has somebody successfully used this with gcc for linting? I've experimenting with the settings for adding a new linter using the cppcheck as e template together with some of the info on gccdiag at null-ls.nvim and ALE, but with no success. Here's what I've tried:

local pattern = [[^([^:]+):(%d+):(%d+):%s+([^:]+):%s+(.*)$]]
local groups = { 'file', 'lnum', 'col', 'code', 'severity', 'message' }
local severity_map = {
  ['error'] = vim.diagnostic.severity.ERROR,
  ['warning'] = vim.diagnostic.severity.WARN,
  ['performance'] = vim.diagnostic.severity.WARN,
  ['style'] = vim.diagnostic.severity.INFO,
  ['information'] = vim.diagnostic.severity.INFO,
}

require('lint').linters.gcc = {
  cmd = 'cc',
  stdin = false, -- or false if it doesn't support content input via stdin. In that case the filename is automatically added to the arguments.
  append_fname = false, -- Automatically append the file name to `args` if `stdin = false` (default: true)
  args = {'-std=c89', '-Wall'}, -- list of arguments. Can contain functions with zero arguments that will be evaluated once the linter is used.
  stream = both, -- ('stdout' | 'stderr' | 'both') configure the stream to which the linter outputs the linting result.
  ignore_exitcode = false, -- set this to true if the linter exits with a code != 0 and that's considered normal.
  env = nil, -- custom environment table to use with the external process. Note that this replaces the *entire* environment, it is not additive.
  parser = require('lint.parser').from_pattern(pattern, groups, severity_map, { ['source'] = 'gcc' }),
}

Problem is, that I don't really know lua and don't know what I'm doing really. I just want to be able to use gcc together with the other linters to lint my code, just as i did with ALE. "cc" exists with code 1 according to neovim, but I don't know where I can get any more information? nvim-lint doesn't have any logs on what commands it runs (as LSP does?).

[kapkanov]

Try this: https://github.com/mfussenegger/nvim-lint/issues/492#issuecomment-1872975515

[lsnow]

require('lint').linters_by_ft = {
  c = {'gcc'}
}

local pattern = [[^([^:]+):(%d+):(%d+):%s+([^:]+):%s+(.*)$]]
local groups = { 'file', 'lnum', 'col', 'severity', 'message' }
local severity_map = {
  ['error'] = vim.diagnostic.severity.ERROR,
  ['warning'] = vim.diagnostic.severity.WARN,
  ['performance'] = vim.diagnostic.severity.WARN,
  ['style'] = vim.diagnostic.severity.INFO,
  ['information'] = vim.diagnostic.severity.INFO,
}

require('lint').linters.gcc = {
  cmd = 'gcc',
  stdin = false, -- or false if it doesn't support content input via stdin. In that case the filename is automatically added to the arguments.
  append_fname = true, -- Automatically append the file name to `args` if `stdin = false` (default: true)
  args = {'-Wall', '-std=c99'}, -- list of arguments. Can contain functions with zero arguments that will be evaluated once the linter is used.
  stream = 'stderr', -- ('stdout' | 'stderr' | 'both') configure the stream to which the linter outputs the linting result.
  ignore_exitcode = true, -- set this to true if the linter exits with a code != 0 and that's considered normal.
  env = nil, -- custom environment table to use with the external process. Note that this replaces the *entire* environment, it is not additive.
  parser = require('lint.parser').from_pattern(pattern, groups, severity_map, { ['source'] = 'gcc' }),
}

modify the line: local groups = { 'file', 'lnum', 'col', 'severity', 'message' } and: ignore_exitcode = true,