Failed to build due to libproc

[AnabasisXu]

Hi, I am trying to install shpool on Windows 10 but failed to build due to failure in compiling libproc:

   Compiling libproc v0.14.10
error[E0601]: `main` function not found in crate `build_script_build`
  --> C:\Users\Administrator\scoop\persist\rustup\.cargo\registry\src\index.crates.io-6f17d22bba15001f\libproc-0.14.10\build.rs:23:13
   |
23 | fn main() {}
   |             ^ consider adding a `main` function to `C:\Users\Administrator\scoop\persist\rustup\.cargo\registry\src\index.crates.io-6f
17d22bba15001f\libproc-0.14.10\build.rs`

For more information about this error, try `rustc --explain E0601`.
error: could not compile `libproc` (build script) due to 1 previous error
warning: build failed, waiting for other jobs to finish...
    Building [=====================>   ] 137/153: clap_builder, toml_edit

Turns out there is no target_os for windows:

#[cfg(target_os = "macos")]
fn main() {
    use std::env;
    use std::path::Path;

    let bindings = bindgen::builder()
        .header_contents("libproc_rs.h", "#include <libproc.h>")
        .layout_tests(false)
        .clang_args(&["-x", "c++", "-I", "/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/"])
        .generate()
        .expect("Failed to build libproc bindings");

    let output_path = Path::new(&env::var("OUT_DIR")
        .expect("OUT_DIR env var was not defined"))
        .join("osx_libproc_bindings.rs");

    bindings
        .write_to_file(output_path)
        .expect("Failed to write libproc bindings");
}

#[cfg(any(target_os = "linux", target_os = "redox", target_os = "android"))]
fn main() {}

Sorry I am too new to Rust to know any solution.

Tried what is sugguested by rustc --explain E0601 in error log and modified the following code to the build.rs in the libproc-0.14.10 dir but it did not work:

#[cfg(any(target_os = "linux", target_os = "redox", target_os = "windows"))]
fn main() {
    // Your program will start here.
    println!("Hello world!");
}

[ethanpailes]

Yeah, shpool does not currently support windows. We have a lot of linux assumptions baked in. There has been some work on a mac port, but we haven't finished that, so fo now linux is the only supported platform.

Porting to windows would require adding cfg directives for various system directories we make use of as well as updating syscalls that don't work on windows to use windows APIs.

[AnabasisXu]

I see. Thanks very much! I will try again on a Linux machine.