Unresolved external symbol

[CGMossa]

I'm trying to add support for vcpkg as I've found out, that I need to link to this with stable-msvc.

I'm beyond frustrated at this point, but here's where I am at: The build.rs I have right now is this:

extern crate vcpkg;
use std::path::PathBuf;

fn main() {
    std::env::set_var("VCPKGRS_DYNAMIC", "");
    std::env::set_var("RUSTFLAGS", "-Ctarget-feature=+crt-static");
    let gsl_library = vcpkg::Config::new()
        .cargo_metadata(true)
        .emit_includes(true)
        // .copy_dlls(true)
        // .vcpkg_root(PathBuf::from("C:/DEV/vcpkg/"))
        .find_package("gsl")
        .unwrap();
    dbg!(gsl_library);
    println!(r#"cargo:rustc-cfg=feature="v2""#);
}

I've also added default = ["v2"] to Cargo.toml to ensure that it is building the version of gsl that I installed through vcpkg.

The vcpkg crate works like this: If all this was resolved correlty, then the necessary things are emitted.

But I still get all of these as unresolved symbols: They aren't strictly v2 stuff, so I am just very perplexed as to why I'm missing 79 symbols:

``` gsl_odeiv2_step_rk2 gsl_odeiv2_step_rk4 gsl_odeiv2_step_rkf45 gsl_odeiv2_step_rkck gsl_odeiv2_step_rk8pd gsl_odeiv2_step_rk1imp gsl_odeiv2_step_rk2imp gsl_odeiv2_step_rk4imp gsl_odeiv2_step_bsimp gsl_odeiv2_step_msadams gsl_odeiv2_step_msbdf gsl_odeiv2_control_scaled gsl_odeiv2_control_standard gsl_interp_linear gsl_interp_polynomial gsl_interp_cspline gsl_interp_cspline_periodic gsl_interp_akima gsl_interp_akima_periodic gsl_rng_default_seed gsl_rng_default gsl_multifit_fdfsolver_lmder gsl_multifit_fdfsolver_lmsder gsl_qrng_niederreiter_2 gsl_qrng_sobol gsl_qrng_halton gsl_qrng_reversehalton gsl_rng_mt19937 gsl_rng_ranlxs0 gsl_rng_ranlxs1 gsl_rng_ranlxs2 gsl_rng_ranlxd1 gsl_rng_ranlxd2 gsl_rng_ranlux gsl_rng_ranlux389 gsl_rng_cmrg gsl_rng_mrg gsl_rng_taus gsl_rng_taus2 gsl_rng_gfsr4 gsl_rng_ranf gsl_rng_ranmar gsl_rng_r250 gsl_rng_tt800 gsl_rng_vax gsl_rng_transputer gsl_rng_randu gsl_rng_minstd gsl_rng_uni gsl_rng_uni32 gsl_rng_slatec gsl_rng_zuf gsl_rng_knuthran2 gsl_rng_knuthran2002 gsl_rng_knuthran gsl_rng_borosh13 gsl_rng_fishman18 gsl_rng_fishman20 gsl_rng_lecuyer21 gsl_rng_waterman14 gsl_rng_fishman2x gsl_rng_coveyou gsl_rng_rand gsl_rng_random_bsd gsl_rng_random_libc5 gsl_rng_random_glibc2 gsl_rng_rand48 gsl_root_fsolver_bisection gsl_root_fsolver_brent gsl_root_fsolver_falsepos gsl_root_fdfsolver_newton gsl_root_fdfsolver_secant gsl_root_fdfsolver_steffenson gsl_wavelet_daubechies gsl_wavelet_daubechies_centered gsl_wavelet_haar gsl_wavelet_haar_centered gsl_wavelet_bspline gsl_wavelet_bspline_centered ```

[GuillaumeGomez]

I never tried to use glsl on Windows, so I think my help will be quite limited... Just in case, do you have the "dev" version? Optional (not sure if relevant...): do you have "glsl_cblas" installed too?

[CGMossa]

According to the accompanying vcpkg_cli, I do have it installed. I am using the version that vcpkg is installing, which is 2.6.

I am giving up on the vcpkg path. I believe the issue might be a conflict between setting it to link statically or dynamically.

Now, I am trying to find a resource, that explains how the println! emit works, so I can hard-code the gsl version I have to the binary, and see where the problem lies.

It seems like no-one is spending anytime on using GSL and Windows. There's absolutely no resource explaining how any of this works. The only thing I can find is opencv apparently links through vcpkg, but it is so convoluted, that I am not sure it is worth it.

[GuillaumeGomez]

Well, windows is a nightmare for developers and most opensource developments are on linux so they generally don't care about windows.

As for the println! thing in the build.rs file, I think you want to take a look here: https://doc.rust-lang.org/cargo/reference/build-scripts.html

[CGMossa]

Yeah, I've been hammering combinations of these and I am 'bout to fully give up. If anyone knows how to set these things up in Windows, I'd love a conversation, and I'd definitely contribute a PR based on said assistance.

It is just beyond annoying. I have no idea if is cdylib or static or whatever. The error messages are indecipherable.

Sorry.

[GuillaumeGomez]

Maybe ask the cargo people for help maybe?