237 lines
7.2 KiB
Rust
237 lines
7.2 KiB
Rust
use pkg_config;
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use std::ffi::OsString;
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use std::path::{Path, PathBuf};
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use std::process::{self, Command};
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use super::env;
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pub fn get_openssl(target: &str) -> (PathBuf, PathBuf) {
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let lib_dir = env("OPENSSL_LIB_DIR").map(PathBuf::from);
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let include_dir = env("OPENSSL_INCLUDE_DIR").map(PathBuf::from);
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if lib_dir.is_none() || include_dir.is_none() {
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let openssl_dir = env("OPENSSL_DIR").unwrap_or_else(|| find_openssl_dir(&target));
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let openssl_dir = Path::new(&openssl_dir);
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let lib_dir = lib_dir.unwrap_or_else(|| openssl_dir.join("lib"));
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let include_dir = include_dir.unwrap_or_else(|| openssl_dir.join("include"));
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(lib_dir, include_dir)
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} else {
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(lib_dir.unwrap(), include_dir.unwrap())
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}
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}
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fn find_openssl_dir(target: &str) -> OsString {
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let host = env::var("HOST").unwrap();
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if host == target && target.contains("apple-darwin") {
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// Check up default Homebrew installation location first
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// for quick resolution if possible.
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let homebrew = Path::new("/usr/local/opt/openssl@1.1");
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if homebrew.exists() {
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return homebrew.to_path_buf().into();
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}
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let homebrew = Path::new("/usr/local/opt/openssl");
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if homebrew.exists() {
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return homebrew.to_path_buf().into();
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}
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// Calling `brew --prefix <package>` command usually slow and
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// takes seconds, and will be used only as a last resort.
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let output = execute_command_and_get_output("brew", &["--prefix", "openssl@1.1"]);
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if let Some(ref output) = output {
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let homebrew = Path::new(&output);
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if homebrew.exists() {
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return homebrew.to_path_buf().into();
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}
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}
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let output = execute_command_and_get_output("brew", &["--prefix", "openssl"]);
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if let Some(ref output) = output {
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let homebrew = Path::new(&output);
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if homebrew.exists() {
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return homebrew.to_path_buf().into();
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}
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}
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}
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try_pkg_config();
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try_vcpkg();
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// FreeBSD ships with OpenSSL but doesn't include a pkg-config file :(
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if host == target && target.contains("freebsd") {
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return OsString::from("/usr");
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}
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let mut msg = format!(
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"
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Could not find directory of OpenSSL installation, and this `-sys` crate cannot
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proceed without this knowledge. If OpenSSL is installed and this crate had
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trouble finding it, you can set the `OPENSSL_DIR` environment variable for the
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compilation process.
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Make sure you also have the development packages of openssl installed.
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For example, `libssl-dev` on Ubuntu or `openssl-devel` on Fedora.
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If you're in a situation where you think the directory *should* be found
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automatically, please open a bug at https://github.com/sfackler/rust-openssl
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and include information about your system as well as this message.
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$HOST = {}
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$TARGET = {}
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openssl-sys = {}
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",
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host,
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target,
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env!("CARGO_PKG_VERSION")
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);
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if host.contains("apple-darwin") && target.contains("apple-darwin") {
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let system = Path::new("/usr/lib/libssl.0.9.8.dylib");
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if system.exists() {
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msg.push_str(&format!(
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"
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It looks like you're compiling on macOS, where the system contains a version of
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OpenSSL 0.9.8. This crate no longer supports OpenSSL 0.9.8.
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As a consumer of this crate, you can fix this error by using Homebrew to
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install the `openssl` package, or as a maintainer you can use the openssl-sys
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0.7 crate for support with OpenSSL 0.9.8.
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Unfortunately though the compile cannot continue, so aborting.
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"
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));
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}
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}
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if host.contains("unknown-linux") && target.contains("unknown-linux-gnu") {
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if Command::new("pkg-config").output().is_err() {
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msg.push_str(&format!(
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"
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It looks like you're compiling on Linux and also targeting Linux. Currently this
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requires the `pkg-config` utility to find OpenSSL but unfortunately `pkg-config`
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could not be found. If you have OpenSSL installed you can likely fix this by
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installing `pkg-config`.
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"
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));
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}
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}
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if host.contains("windows") && target.contains("windows-gnu") {
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msg.push_str(&format!(
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"
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It looks like you're compiling for MinGW but you may not have either OpenSSL or
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pkg-config installed. You can install these two dependencies with:
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pacman -S openssl-devel pkg-config
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and try building this crate again.
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"
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));
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}
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if host.contains("windows") && target.contains("windows-msvc") {
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msg.push_str(&format!(
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"
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It looks like you're compiling for MSVC but we couldn't detect an OpenSSL
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installation. If there isn't one installed then you can try the rust-openssl
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README for more information about how to download precompiled binaries of
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OpenSSL:
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https://github.com/sfackler/rust-openssl#windows
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"
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));
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}
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panic!(msg);
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}
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/// Attempt to find OpenSSL through pkg-config.
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///
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/// Note that if this succeeds then the function does not return as pkg-config
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/// typically tells us all the information that we need.
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fn try_pkg_config() {
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let target = env::var("TARGET").unwrap();
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let host = env::var("HOST").unwrap();
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// If we're going to windows-gnu we can use pkg-config, but only so long as
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// we're coming from a windows host.
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//
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// Otherwise if we're going to windows we probably can't use pkg-config.
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if target.contains("windows-gnu") && host.contains("windows") {
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env::set_var("PKG_CONFIG_ALLOW_CROSS", "1");
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} else if target.contains("windows") {
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return;
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}
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let lib = match pkg_config::Config::new()
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.print_system_libs(false)
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.find("openssl")
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{
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Ok(lib) => lib,
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Err(e) => {
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println!("run pkg_config fail: {:?}", e);
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return;
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}
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};
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super::validate_headers(&lib.include_paths);
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for include in lib.include_paths.iter() {
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println!("cargo:include={}", include.display());
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}
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process::exit(0);
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}
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/// Attempt to find OpenSSL through vcpkg.
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///
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/// Note that if this succeeds then the function does not return as vcpkg
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/// should emit all of the cargo metadata that we need.
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#[cfg(target_env = "msvc")]
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fn try_vcpkg() {
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// vcpkg will not emit any metadata if it can not find libraries
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// appropriate for the target triple with the desired linkage.
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let lib = vcpkg::Config::new()
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.emit_includes(true)
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.find_package("openssl");
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if let Err(e) = lib {
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println!(
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"note: vcpkg did not find openssl: {}",
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e
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);
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return;
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}
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let lib = lib.unwrap();
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super::validate_headers(&lib.include_paths);
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println!("cargo:rustc-link-lib=user32");
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println!("cargo:rustc-link-lib=gdi32");
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println!("cargo:rustc-link-lib=crypt32");
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process::exit(0);
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}
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#[cfg(not(target_env = "msvc"))]
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fn try_vcpkg() {}
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fn execute_command_and_get_output(cmd: &str, args: &[&str]) -> Option<String> {
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let out = Command::new(cmd).args(args).output();
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if let Ok(ref r1) = out {
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if r1.status.success() {
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let r2 = String::from_utf8(r1.stdout.clone());
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if let Ok(r3) = r2 {
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return Some(r3.trim().to_string());
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}
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}
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}
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return None;
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}
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