Error On Wasm bindgn

help
1

in this case im converting rust to js

use gemini_ai::{content_gen::rag_search, decode_gemini, GeminiContentGenBuilder, Responses};
use wasm_bindgen::prelude::wasm_bindgen;

#[wasm_bindgen]
pub fn generate_response(input: &str, env: &str, url: &str) -> String {
    let response = GeminiContentGenBuilder::new()
        .env(env)
        .model(gemini_ai::Models::GEMINI_1_5_FLASH_002)
        .no_memory()
        .kind(gemini_ai::Kind::Rag(&[url]))
        .instruction("")
        .text(input)
        .max_token(gemini_ai::TokenLen::Custome(4000))
        .build()
        .output();
    println!("{}", response);
    let response = decode_gemini(&response).unwrap();
    let mut res = String::new();
    for candidate in response.candidates {
        for part in candidate.content.parts {
            let part = part.text;
            res.push_str(&part);
        }
    }
    res
}

[package]
name = "server"
version = "0.1.0"
edition = "2021"

[dependencies]
gemini-ai = "0.1.1672"
wasm-bindgen = "0.2"

[lib]
crate-type = ["cdylib", "rlib"]

Caused by:
  process didn't exit successfully: `C:\Users\trueb\OneDrive\Desktop\tool\server\target\release\build\openssl-sys-de83901c90e68e58\build-script-main` (exit code: 101)
  --- stdout
  cargo:rustc-check-cfg=cfg(osslconf, values("OPENSSL_NO_OCB", "OPENSSL_NO_SM4", "OPENSSL_NO_SEED", "OPENSSL_NO_CHACHA", "OPENSSL_NO_CAST", "OPENSSL_NO_IDEA", "OPENSSL_NO_CAMELLIA", "OPENSSL_NO_RC4", "OPENSSL_NO_BF", "OPENSSL_NO_PSK", "OPENSSL_NO_DEPRECATED_3_0", "OPENSSL_NO_SCRYPT", "OPENSSL_NO_SM3", "OPENSSL_NO_RMD160", "OPENSSL_NO_EC2M", "OPENSSL_NO_OCSP", "OPENSSL_NO_CMS", "OPENSSL_NO_COMP", "OPENSSL_NO_SOCK", "OPENSSL_NO_STDIO", "OPENSSL_NO_EC", "OPENSSL_NO_SSL3_METHOD", "OPENSSL_NO_KRB5", "OPENSSL_NO_TLSEXT", "OPENSSL_NO_SRP", "OPENSSL_NO_RFC3779", "OPENSSL_NO_SHA", "OPENSSL_NO_NEXTPROTONEG", "OPENSSL_NO_ENGINE", "OPENSSL_NO_BUF_FREELISTS"))
  cargo:rustc-check-cfg=cfg(openssl)
  cargo:rustc-check-cfg=cfg(libressl)
  cargo:rustc-check-cfg=cfg(boringssl)
  cargo:rustc-check-cfg=cfg(libressl250)
  cargo:rustc-check-cfg=cfg(libressl251)
  cargo:rustc-check-cfg=cfg(libressl252)
  cargo:rustc-check-cfg=cfg(libressl261)
  cargo:rustc-check-cfg=cfg(libressl270)
  cargo:rustc-check-cfg=cfg(libressl271)
  cargo:rustc-check-cfg=cfg(libressl273)
  cargo:rustc-check-cfg=cfg(libressl280)
  cargo:rustc-check-cfg=cfg(libressl281)
  cargo:rustc-check-cfg=cfg(libressl291)
  cargo:rustc-check-cfg=cfg(libressl310)
  cargo:rustc-check-cfg=cfg(libressl321)
  cargo:rustc-check-cfg=cfg(libressl332)
  cargo:rustc-check-cfg=cfg(libressl340)
  cargo:rustc-check-cfg=cfg(libressl350)
  cargo:rustc-check-cfg=cfg(libressl360)
  cargo:rustc-check-cfg=cfg(libressl361)
  cargo:rustc-check-cfg=cfg(libressl370)
  cargo:rustc-check-cfg=cfg(libressl380)
  cargo:rustc-check-cfg=cfg(libressl381)
  cargo:rustc-check-cfg=cfg(libressl382)
  cargo:rustc-check-cfg=cfg(libressl390)
  cargo:rustc-check-cfg=cfg(libressl400)
  cargo:rustc-check-cfg=cfg(ossl101)
  cargo:rustc-check-cfg=cfg(ossl102)
  cargo:rustc-check-cfg=cfg(ossl102f)
  cargo:rustc-check-cfg=cfg(ossl102h)
  cargo:rustc-check-cfg=cfg(ossl110)
  cargo:rustc-check-cfg=cfg(ossl110f)
  cargo:rustc-check-cfg=cfg(ossl110g)
  cargo:rustc-check-cfg=cfg(ossl110h)
  cargo:rustc-check-cfg=cfg(ossl111)
  cargo:rustc-check-cfg=cfg(ossl111b)
  cargo:rustc-check-cfg=cfg(ossl111c)
  cargo:rustc-check-cfg=cfg(ossl111d)
  cargo:rustc-check-cfg=cfg(ossl300)
  cargo:rustc-check-cfg=cfg(ossl310)
  cargo:rustc-check-cfg=cfg(ossl320)
  cargo:rustc-check-cfg=cfg(ossl330)
  cargo:rustc-check-cfg=cfg(ossl340)
  cargo:rerun-if-env-changed=WASM32_UNKNOWN_UNKNOWN_OPENSSL_LIB_DIR
  WASM32_UNKNOWN_UNKNOWN_OPENSSL_LIB_DIR unset
  cargo:rerun-if-env-changed=OPENSSL_LIB_DIR
  OPENSSL_LIB_DIR unset
  cargo:rerun-if-env-changed=WASM32_UNKNOWN_UNKNOWN_OPENSSL_INCLUDE_DIR
  WASM32_UNKNOWN_UNKNOWN_OPENSSL_INCLUDE_DIR unset
  cargo:rerun-if-env-changed=OPENSSL_INCLUDE_DIR
  OPENSSL_INCLUDE_DIR unset
  cargo:rerun-if-env-changed=WASM32_UNKNOWN_UNKNOWN_OPENSSL_DIR
  WASM32_UNKNOWN_UNKNOWN_OPENSSL_DIR unset
  cargo:rerun-if-env-changed=OPENSSL_DIR
  OPENSSL_DIR unset
  cargo:rerun-if-env-changed=OPENSSL_NO_PKG_CONFIG
  cargo:rerun-if-env-changed=PKG_CONFIG_ALLOW_CROSS_wasm32-unknown-unknown
  cargo:rerun-if-env-changed=PKG_CONFIG_ALLOW_CROSS_wasm32_unknown_unknown
  cargo:rerun-if-env-changed=TARGET_PKG_CONFIG_ALLOW_CROSS
  cargo:rerun-if-env-changed=PKG_CONFIG_ALLOW_CROSS
  cargo:rerun-if-env-changed=PKG_CONFIG_wasm32-unknown-unknown
  cargo:rerun-if-env-changed=PKG_CONFIG_wasm32_unknown_unknown
  cargo:rerun-if-env-changed=TARGET_PKG_CONFIG
  cargo:rerun-if-env-changed=PKG_CONFIG
  cargo:rerun-if-env-changed=PKG_CONFIG_SYSROOT_DIR_wasm32-unknown-unknown
  cargo:rerun-if-env-changed=PKG_CONFIG_SYSROOT_DIR_wasm32_unknown_unknown
  cargo:rerun-if-env-changed=TARGET_PKG_CONFIG_SYSROOT_DIR
  cargo:rerun-if-env-changed=PKG_CONFIG_SYSROOT_DIR


  Could not find openssl via pkg-config:
  pkg-config has not been configured to support cross-compilation.

  Install a sysroot for the target platform and configure it via
  PKG_CONFIG_SYSROOT_DIR and PKG_CONFIG_PATH, or install a
  cross-compiling wrapper for pkg-config and set it via
  PKG_CONFIG environment variable.

  cargo:warning=Could not find directory of OpenSSL installation, and this `-sys` crate cannot proceed without this knowledge. If OpenSSL is installed and this crate had trouble finding it,  you can set the `OPENSSL_DIR` environment variable for the compilation process. See stderr section below for further information.

  --- stderr


  Could not find directory of OpenSSL installation, and this `-sys` crate cannot
  proceed without this knowledge. If OpenSSL is installed and this crate had
  trouble finding it,  you can set the `OPENSSL_DIR` environment variable for the
  compilation process.

  Make sure you also have the development packages of openssl installed.
  For example, `libssl-dev` on Ubuntu or `openssl-devel` on Fedora.

  If you're in a situation where you think the directory *should* be found
  automatically, please open a bug at https://github.com/sfackler/rust-openssl
  and include information about your system as well as this message.

  $HOST = x86_64-pc-windows-msvc
  $TARGET = wasm32-unknown-unknown
  openssl-sys = 0.9.104

also installed openssl

2

You can't use openssl or any other C libraries on wasm32-unknown-unknown at the moment. There is an ABI compatibility issue on wasm32-unknown-unknown between extern "C" in Rust and the real C ABI as used by clang. Fixing this is being worked on, but it will take a while before it is fully fixed as the fix breaks versions of wasm-bindgen before 0.2.88. There is currently a warning about using too old versions of wasm-bindgen, but this will need to become a hard error before we can safely switch the ABI.

1 Like
3

Your build is trying to use C code (OpenSSL). This will never succeed; you cannot (currently) use any C or C++ code from within Rust code that is going to be compiled for wasm32-unknown-unknown. You have to write “pure Rust” (and JavaScript) code.

However, even if you somehow successfully compiled and linked OpenSSL, it would not be able to function in a web browser. In a web browser, network requests must be issued using browser APIs for specific protocols (HTTP, WebSocket, WebTransport, WebRTC, etc.), not using plain TCP or even TLS connections. You will have to adapt your gemini_ai library to use web APIs — gloo-net (web-specific) can do this for you, or reqwest if you're trying to make HTTP and not WebSocket requests and you’d like something portable to non-web platforms too.

(On the upside, your WASM binary will contain less code, because it doesn’t need to include HTTP and TLS implementations, and so will be smaller and build faster.)

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