Directory for #include preprocessor

[Shimushushushu]

I'm working on a framework (Flexi) which uses lots of preprocessors, e.g., #include. The framework has a structure like:

src/flexi.h
src/a_folder/whatever.f90

where whatever.f90 includes flexi.h by #include "flexi.h". While gfortran works if -Isrc is present, it seems that fortls cannot find the header. If I change it to #include "../flexi.h", it does work, but there are so many files that I think I should not do that.

I tried both source_dirs and include_dirs, by adding src/**, but neither works.

Have you ever met the problem, and how did you get over it?

[gnikit]

My honest opinion is that a tool should never dictate how your code looks like, so you definitely shouldn't edit your source code to get fortls to work.

From what I understand your settings should look something like this

{
  "include_dirs": "src",
  "pp_suffixes": [".h"],
  "incl_suffixes": [".h"]
}

I don't have access to a computer right now, so I'm not sure about incl_suffixes.
Let me know how that works.

[Shimushushushu]

It does not work. I don't know whether the output from VS Code helps:

["INFO" - 2:07:40 AM] Restarting language server...
["INFO" - 2:07:40 AM] Initialising Language Server for workspace: /path/to/project/test.f90 with command-line options: --enable_code_actions, --hover_signature, --use_signature_help, --lowercase_intrinsics, -c, ./fortls.json, --nthreads=4, --incremental_sync
[INFO - 02:07:41] fortls - Fortran Language Server 2.13.0 Initialized

where ./fortls.json contains the configuration you mentioned above.

[Shimushushushu]

I tried to examine the code, and my conclusion is: parse_fortran.py works as expected; it recognizes include_dirs. However, whenever I hover on the wavy line below the #include, a textDocument/hover will send to fortls, which returns

RECV {
  "jsonrpc":"2.0",
  "id":7,
  "method":"textDocument/codeAction",
  "params":{
    "textDocument":{
      "uri":"file:///path/to/project/test.f90"
    },
    "range":{
      "start":{
        "line":1,
        "character":2
      },
      "end":{
        "line":1,
        "character":2
      }
    },
    "context":{
      "diagnostics":[
        {
          "range":{
            "start":{
              "line":1,
              "character":2
            },
            "end":{
              "line":1,
              "character":2
            }
          },
          "message":"flexi.h: No such file or directory",
          "severity":1
        }
      ],
      "only":[
        "quickfix"
      ],
      "triggerKind":1
    }
  }
}

Why serve_hover returns a codeAction? I know nothing of LSP and I'm really confused.

By the way, if I use "include_dirs": "src", it becomes ['s', 'r', 'c'], so I changed it to "include_dirs": ["src"].

[zbinkz]

Does using the full path to src in include_dirs work?
"include_dirs": ["/full/path/to/src"]

[Shimushushushu]

No, and actually ["src"] does work, with all #defines correctly recognized, shown in the debug log, although I still receive errors that the header can not be found. Now I'm so confused that I suspect that whether the error is given by fortls or others, e.g., the linter, which is gfortran.