Add this option to clang: -Wno-unused-command-line-argument

[ubaldot]

How to?
I tried to add let g:ale_c_clangd_options = '-Wno-unused-command-line-argument' in my .vimrc but it didn't work.
I have this in my ALEInfo

let g:ale_c_always_make = 1
let g:ale_c_build_dir = ''
let g:ale_c_build_dir_names = ['build/proj1', 'build/proj2']
let g:ale_c_cc_executable = '<auto>'
let g:ale_c_cc_options = '-std=c11 -Wall'
let g:ale_c_clangd_executable = 'clangd'
let g:ale_c_clangd_options = '-Wno-unused-command-line-argument'
let g:ale_c_cppcheck_executable = 'cppcheck'
let g:ale_c_cppcheck_options = '-I /usr/include'
let g:ale_c_parse_compile_commands = 1
let g:ale_c_parse_makefile = 0
....
<<<OUTPUT STARTS>>>
 clang: error: argument unused during compilation: '-mcpu=cortex-r5' [-Werror,-Wunused-command-line-argument]
 clang: error: argument unused during compilation: '-mthumb' [-Werror,-Wunused-command-line-argument]
 clang: error: argument unused during compilation: '-mfloat-abi=hard' [-Werror,-Wunused-command-line-argument]
 clang: error: argument unused during compilation: '-mfpu=vfpv3-d16' [-Werror,-Wunused-command-line-argument]
 <<<OUTPUT ENDS>>>

(executable check - success) clangd
(executable check - success) cppcheck
(finished - exit code 1) ['/bin/bash', '-c', 'cd ''/home/yt75534/vas/MyProject'' && ''cppcheck'' -q --language=c --template=''{file}:{line}:{column}: {severity}:{inconclusive:inconclusive:} {message} [{id}]\\n{code}'' --project=''build/proj1/compile_commands.json'' --file-filter=''src/MyFile.c'' -I /usr/include ''/tmp/vueBoGp/2/MyFile.c''']

<<<OUTPUT STARTS>>>
cppcheck: error: unrecognized command line option: "--file-filter=src/MyFile.c".
<<<OUTPUT ENDS>>>

[hsanson]

Are you editing a C file or a CPP file? can you please post the whole ALEInfo output?

If you are editing a CPP file you have to use g:ale_cpp_clang_options instead of g:ale_c_clang_options. To see what command ALE is using to invoke clang you can do:

: echo ale_linters#cpp#clangd#GetCommand('')    <- for CPP files
: echo ale_linters#c#clangd#GetCommand('')    <- for C files

[ubaldot]

I am working on a C file.
And I found a solution:

let g:ale_c_cc_options = '-std=c11 -Wall -Wno-unused-command-line-argument'