I am currently playing with the integration of C libraries in vlang. I have created a new project with v new projectname and downloaded the steamworks-sdk. For the integration I followed the documentation of vlang for the integration of c code. Unfortunately, vlang cannot find the libraries from the sdk when compiling.

My current folder structure looks something like this:

- v.mod
- steam_appid.txt
- src
    - main.v
- c
    - steamworks
        - content of the headers folder public/steam
        - libsteam_api.so
        - steam_api64.dll

Here is my main.v file:

module main

#flag -I @VMODROOT/c/steamworks
#flag -L @VMODROOT/c/steamworks

#flag linux -L @VMODROOT/c/steamworks/lib/linux64
#flag linux -llibsteam_api.so

#flag windows -L @VMODROOT/c/steamworks/lib/win64
#flag windows -lsteam_api64.dll
//#include "steam_api.h"

fn main() {
    println('Hello EternalV!')
    // if C.SteamAPI_RestartAppIfNecessary(480) {
    //  exit(1)
    // }
}

The error output when compiling is as follows:

$v run /home/leontutte/Projekte/EternalVLauncher/src
Compilation with unknown C compiler
==================
tcc: error: library 'libsteam_api.so' not found
...
==================
(Use `v -cg` to print the entire error message)

builder error: 
==================
C error found. It should never happen, when compiling pure V code.
This is a V compiler bug, please report it using `v bug file.v`,
or goto https://github.com/vlang/v/issues/new/choose .
You can also use #help on Discord: https://discord.gg/vlang .

If anybody has an idea just let me know 🙂

I have tried different paths for the libraries, such as in the main directory or directly in the src folder next to the main.v. I have also included the steam_api.h as a test to check my #flag instructions.