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build.rs
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build.rs
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#[cfg(not(windows))]
extern crate cc;
#[cfg(target_env = "msvc")]
extern crate libc;
#[cfg(target_env = "msvc")]
extern crate vcpkg;
#[cfg(target_env = "msvc")]
extern crate zip;
extern crate libflate;
extern crate minisign_verify;
extern crate pkg_config;
extern crate tar;
#[cfg(any(windows, feature = "fetch-latest"))]
extern crate ureq;
use std::{
env,
path::{Path, PathBuf},
};
fn main() {
println!("cargo:rerun-if-env-changed=SODIUM_LIB_DIR");
println!("cargo:rerun-if-env-changed=SODIUM_SHARED");
println!("cargo:rerun-if-env-changed=SODIUM_USE_PKG_CONFIG");
if cfg!(target_env = "msvc") {
// vcpkg requires to set env VCPKGRS_DYNAMIC
println!("cargo:rerun-if-env-changed=VCPKGRS_DYNAMIC");
}
if cfg!(not(windows)) {
println!("cargo:rerun-if-env-changed=SODIUM_DISABLE_PIE");
}
if env::var("SODIUM_STATIC").is_ok() {
panic!("SODIUM_STATIC is deprecated. Use SODIUM_SHARED instead.");
}
let lib_dir_isset = env::var("SODIUM_LIB_DIR").is_ok();
let use_pkg_isset = if cfg!(feature = "use-pkg-config") {
true
} else {
env::var("SODIUM_USE_PKG_CONFIG").is_ok()
};
let shared_isset = env::var("SODIUM_SHARED").is_ok();
if lib_dir_isset && use_pkg_isset {
panic!("SODIUM_LIB_DIR is incompatible with SODIUM_USE_PKG_CONFIG. Set the only one env variable");
}
if lib_dir_isset {
find_libsodium_env();
} else if use_pkg_isset {
if shared_isset {
println!("cargo:warning=SODIUM_SHARED has no effect with SODIUM_USE_PKG_CONFIG");
}
find_libsodium_pkg();
} else {
if shared_isset {
println!(
"cargo:warning=SODIUM_SHARED has no effect for building libsodium from source"
);
}
build_libsodium();
}
}
/* Must be called when SODIUM_LIB_DIR is set to any value
This function will set `cargo` flags.
*/
fn find_libsodium_env() {
let lib_dir = env::var("SODIUM_LIB_DIR").unwrap(); // cannot fail
println!("cargo:rustc-link-search=native={lib_dir}");
let mode = if env::var("SODIUM_SHARED").is_ok() {
"dylib"
} else {
"static"
};
let name = if cfg!(target_env = "msvc") {
"libsodium"
} else {
"sodium"
};
println!("cargo:rustc-link-lib={mode}={name}");
println!("cargo:warning=Using unknown libsodium version.");
}
/* Must be called when no SODIUM_USE_PKG_CONFIG env var is set
This function will set `cargo` flags.
*/
#[cfg(target_env = "msvc")]
fn find_libsodium_pkg() {
match vcpkg::probe_package("libsodium") {
Ok(lib) => {
println!("cargo:warning=Using unknown libsodium version");
for lib_dir in &lib.link_paths {
println!("cargo:lib={}", lib_dir.to_str().unwrap());
}
for include_dir in &lib.include_paths {
println!("cargo:include={}", include_dir.to_str().unwrap());
}
}
Err(e) => {
panic!("Error: {:?}", e);
}
};
}
/* Must be called when SODIUM_USE_PKG_CONFIG env var is set
This function will set `cargo` flags.
*/
#[cfg(not(target_env = "msvc"))]
fn find_libsodium_pkg() {
match pkg_config::Config::new().probe("libsodium") {
Ok(lib) => {
for lib_dir in &lib.link_paths {
println!("cargo:lib={}", lib_dir.to_str().unwrap());
}
for include_dir in &lib.include_paths {
println!("cargo:include={}", include_dir.to_str().unwrap());
}
}
Err(e) => {
panic!("Error: {:?}", e);
}
}
}
#[cfg(all(windows, target_env = "msvc"))]
fn make_libsodium(_: &str, _: &Path, install_dir: &Path) -> PathBuf {
// We don't build anything on windows, we simply link to precompiled libs.
use zip::read::ZipArchive;
// Determine filename for pre-built MSVC binaries
let basename = "libsodium-1.0.19-stable-msvc";
let filename = format!("{}.zip", basename);
let signature_filename = format!("{}.zip.minisig", basename);
// Read binaries archive from disk (or download if requested) & verify signature
let archive_bin = retrieve_and_verify_archive(&filename, &signature_filename);
// Unpack the zip
let mut archive = ZipArchive::new(std::io::Cursor::new(archive_bin)).unwrap();
archive.extract(&install_dir).unwrap();
get_lib_dir(install_dir)
}
#[cfg(all(windows, not(target_env = "msvc")))]
fn make_libsodium(_: &str, _: &Path, install_dir: &Path) -> PathBuf {
// We don't build anything on windows, we simply link to precompiled libs.
use libflate::gzip::Decoder;
use tar::Archive;
// Determine filename for pre-built MinGW binaries
let basename = "libsodium-1.0.19-stable-mingw";
let filename = format!("{}.tar.gz", basename);
let signature_filename = format!("{}.tar.gz.minisig", basename);
// Read binaries archive from disk (or download if requested) & verify signature
let archive_bin = retrieve_and_verify_archive(&filename, &signature_filename);
// Unpack the tarball
let gz_decoder = Decoder::new(std::io::Cursor::new(archive_bin)).unwrap();
let mut archive = Archive::new(gz_decoder);
archive.unpack(&install_dir).unwrap();
get_lib_dir(install_dir)
}
#[cfg(not(windows))]
fn make_libsodium(target: &str, source_dir: &Path, install_dir: &Path) -> PathBuf {
use std::{fs, process::Command, str};
// Decide on CC, CFLAGS and the --host configure argument
let build_compiler = cc::Build::new().get_compiler();
let mut compiler = build_compiler.path().to_str().unwrap().to_string();
let mut cflags = build_compiler.cflags_env().into_string().unwrap();
let ldflags = env::var("SODIUM_LDFLAGS").unwrap_or_default();
let host_arg;
let cross_compiling;
let help;
let mut configure_extra = vec![];
if target.contains("-wasi") {
cross_compiling = true;
compiler = "zig cc --target=wasm32-wasi".to_string();
host_arg = "--host=wasm32-wasi".to_string();
configure_extra.push("--disable-ssp");
configure_extra.push("--without-pthreads");
env::set_var("AR", "zig ar");
env::set_var("RANLIB", "zig ranlib");
help = "The Zig SDK needs to be installed in order to cross-compile to WebAssembly\n";
} else if target.contains("-ios") {
// Determine Xcode directory path
let xcode_select_output = Command::new("xcode-select").arg("-p").output().unwrap();
if !xcode_select_output.status.success() {
panic!("Failed to run xcode-select -p");
}
let xcode_dir = str::from_utf8(&xcode_select_output.stdout)
.unwrap()
.trim()
.to_string();
// Determine SDK directory paths
let sdk_dir_simulator = Path::new(&xcode_dir)
.join("Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk")
.to_str()
.unwrap()
.to_string();
let sdk_dir_ios = Path::new(&xcode_dir)
.join("Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk")
.to_str()
.unwrap()
.to_string();
// Min versions
let ios_simulator_version_min = "9.0.0";
let ios_version_min = "9.0.0";
match target {
"aarch64-apple-ios" => {
cflags += " -arch arm64";
cflags += &format!(" -isysroot {sdk_dir_ios}");
cflags += &format!(" -mios-version-min={ios_version_min}");
host_arg = "--host=aarch64-apple-darwin23".to_string();
}
"armv7-apple-ios" => {
cflags += " -arch armv7";
cflags += &format!(" -isysroot {sdk_dir_ios}");
cflags += &format!(" -mios-version-min={ios_version_min}");
cflags += " -mthumb";
host_arg = "--host=arm-apple-darwin23".to_string();
}
"armv7s-apple-ios" => {
cflags += " -arch armv7s";
cflags += &format!(" -isysroot {sdk_dir_ios}");
cflags += &format!(" -mios-version-min={ios_version_min}");
cflags += " -mthumb";
host_arg = "--host=arm-apple-darwin23".to_string();
}
"x86_64-apple-ios" => {
cflags += " -arch x86_64";
cflags += &format!(" -isysroot {sdk_dir_simulator}");
cflags += &format!(" -mios-simulator-version-min={ios_simulator_version_min}");
host_arg = "--host=x86_64-apple-darwin23".to_string();
}
"aarch64-apple-ios-sim" => {
cflags += " -arch arm64";
cflags += &format!(" -isysroot {sdk_dir_simulator}");
cflags += &format!(" -mios-simulator-version-min={ios_simulator_version_min}");
host_arg = "--host=aarch64-apple-darwin23".to_string();
}
_ => panic!("Unknown iOS build target: {}", target),
}
cross_compiling = true;
help = "";
} else {
if target.contains("i686") {
compiler += " -m32 -maes";
cflags += " -march=i686";
}
let host = env::var("HOST").unwrap();
host_arg = format!("--host={target}");
cross_compiling = target != host;
help = if cross_compiling {
"***********************************************************\n\
Use the 'cargo zigbuild' command to cross-compile Rust code\n\
with C dependencies such as libsodium.\n\
***********************************************************\n"
} else {
""
};
}
// Run `./configure`
let prefix_arg = format!("--prefix={}", install_dir.to_str().unwrap());
let mut configure_cmd = Command::new(fs::canonicalize(source_dir.join("configure")).unwrap());
if !compiler.is_empty() {
configure_cmd.env("CC", &compiler);
}
if !cflags.is_empty() {
configure_cmd.env("CFLAGS", &cflags);
}
if !ldflags.is_empty() {
configure_cmd.env("LDFLAGS", &ldflags);
}
if env::var("SODIUM_DISABLE_PIE").is_ok() {
configure_cmd.arg("--disable-pie");
}
#[cfg(feature = "optimized")]
configure_cmd.arg("--enable-opt");
#[cfg(feature = "minimal")]
configure_cmd.arg("--enable-minimal");
let configure_output = configure_cmd
.current_dir(source_dir)
.arg(&prefix_arg)
.arg(&host_arg)
.args(configure_extra)
.arg("--enable-shared=no")
.arg("--disable-dependency-tracking")
.output()
.unwrap_or_else(|error| {
panic!("Failed to run './configure': {}\n{}", error, help);
});
if !configure_output.status.success() {
panic!(
"\n{:?}\nCFLAGS={}\nLDFLAGS={}\nCC={}\n{}\n{}\n{}\n",
configure_cmd,
cflags,
ldflags,
compiler,
String::from_utf8_lossy(&configure_output.stdout),
String::from_utf8_lossy(&configure_output.stderr),
help
);
}
// Run `make check`, or `make all` if we're cross-compiling
let j_arg = format!("-j{}", env::var("NUM_JOBS").unwrap());
let make_arg = if cross_compiling { "all" } else { "check" };
let mut make_cmd = Command::new("make");
let make_output = make_cmd
.current_dir(source_dir)
.env("V", "1")
.arg(make_arg)
.arg(&j_arg)
.output()
.unwrap_or_else(|error| {
panic!("Failed to run 'make {}': {}\n{}", make_arg, error, help);
});
if !make_output.status.success() {
panic!(
"\n{:?}\n{}\n{}\n{}\n{}",
make_cmd,
String::from_utf8_lossy(&configure_output.stdout),
String::from_utf8_lossy(&make_output.stdout),
String::from_utf8_lossy(&make_output.stderr),
help
);
}
// Run `make install`
let mut install_cmd = Command::new("make");
let install_output = install_cmd
.current_dir(source_dir)
.arg("install")
.output()
.unwrap_or_else(|error| {
panic!("Failed to run 'make install': {}", error);
});
if !install_output.status.success() {
panic!(
"\n{:?}\n{}\n{}\n{}\n{}\n",
install_cmd,
String::from_utf8_lossy(&configure_output.stdout),
String::from_utf8_lossy(&make_output.stdout),
String::from_utf8_lossy(&install_output.stdout),
String::from_utf8_lossy(&install_output.stderr)
);
}
install_dir.join("lib")
}
#[cfg(any(windows, target_env = "msvc"))]
fn get_crate_dir() -> PathBuf {
env::var("CARGO_MANIFEST_DIR").unwrap().into()
}
#[cfg(target_env = "msvc")]
fn is_release_profile() -> bool {
env::var("PROFILE").unwrap() == "release"
}
#[cfg(all(target_env = "msvc", target_pointer_width = "32"))]
fn get_lib_dir(install_dir: &Path) -> PathBuf {
if is_release_profile() {
install_dir.join("libsodium/Win32/Release/v143/static/")
} else {
install_dir.join("libsodium/Win32/Debug/v143/static/")
}
}
#[cfg(all(target_env = "msvc", target_pointer_width = "64"))]
fn get_lib_dir(install_dir: &Path) -> PathBuf {
if is_release_profile() {
install_dir.join("libsodium/x64/Release/v143/static/")
} else {
install_dir.join("libsodium/x64/Debug/v143/static/")
}
}
#[cfg(all(windows, not(target_env = "msvc"), target_pointer_width = "32"))]
fn get_lib_dir(install_dir: &Path) -> PathBuf {
install_dir.join("libsodium-win32/lib/")
}
#[cfg(all(windows, not(target_env = "msvc"), target_pointer_width = "64"))]
fn get_lib_dir(install_dir: &Path) -> PathBuf {
install_dir.join("libsodium-win64/lib/")
}
fn get_install_dir() -> PathBuf {
PathBuf::from(env::var("OUT_DIR").unwrap()).join("installed")
}
fn retrieve_and_verify_archive(filename: &str, signature_filename: &str) -> Vec<u8> {
use minisign_verify::{PublicKey, Signature};
use std::fs::File;
use std::io::prelude::*;
let pk =
PublicKey::from_base64("RWQf6LRCGA9i53mlYecO4IzT51TGPpvWucNSCh1CBM0QTaLn73Y7GFO3").unwrap();
let mut archive_bin = vec![];
#[cfg(any(windows, feature = "fetch-latest"))]
{
let baseurl = "https://download.libsodium.org/libsodium/releases";
let response = ureq::get(&format!("{}/{}", baseurl, filename)).call();
response
.unwrap()
.into_reader()
.read_to_end(&mut archive_bin)
.unwrap();
File::create(&filename)
.unwrap()
.write_all(&archive_bin)
.unwrap();
let response = ureq::get(&format!("{}/{}", baseurl, signature_filename)).call();
let mut signature_bin = vec![];
response
.unwrap()
.into_reader()
.read_to_end(&mut signature_bin)
.unwrap();
File::create(&signature_filename)
.unwrap()
.write_all(&signature_bin)
.unwrap();
}
#[cfg(not(any(windows, feature = "fetch-latest")))]
{
File::open(filename)
.unwrap()
.read_to_end(&mut archive_bin)
.unwrap();
}
let signature = Signature::from_file(signature_filename).unwrap();
pk.verify(&archive_bin, &signature, false)
.expect("Invalid signature");
archive_bin
}
fn build_libsodium() {
use libflate::gzip::Decoder;
use std::fs;
use tar::Archive;
// Determine build target triple
let mut target = env::var("TARGET").unwrap();
// Hack for RISC-V; Rust apparently uses a different convention for RISC-V triples
if target.starts_with("riscv") {
let mut split = target.split('-');
let arch = split.next().unwrap();
let bitness = &arch[5..7];
let rest = split.collect::<Vec<_>>().join("-");
target = format!("riscv{bitness}-{rest}");
}
// Determine filenames
let basedir = "libsodium-stable";
let basename = "LATEST";
let filename = format!("{basename}.tar.gz");
let signature_filename = format!("{basename}.tar.gz.minisig");
// Read source archive from disk (or download if requested) & verify signature
let archive_bin = retrieve_and_verify_archive(&filename, &signature_filename);
// Determine source and install dir
let mut install_dir = get_install_dir();
let mut source_dir = PathBuf::from(env::var("OUT_DIR").unwrap()).join("source");
// Avoid issues with paths containing spaces by falling back to using a tempfile.
// See https://github.com/jedisct1/libsodium/issues/207
if install_dir.to_str().unwrap().contains(' ') {
let fallback_path = PathBuf::from("/tmp/").join(basename).join(&target);
install_dir = fallback_path.join("installed");
source_dir = fallback_path.join("/source");
println!(
"cargo:warning=The path to the usual build directory contains spaces and hence \
can't be used to build libsodium. Falling back to use {}. If running `cargo \
clean`, ensure you also delete this fallback directory",
fallback_path.to_str().unwrap()
);
}
// Create directories
fs::create_dir_all(&install_dir).unwrap();
fs::create_dir_all(&source_dir).unwrap();
// Unpack the tarball
let gz_decoder = Decoder::new(std::io::Cursor::new(archive_bin)).unwrap();
let mut archive = Archive::new(gz_decoder);
archive.unpack(&source_dir).unwrap();
source_dir.push(basedir);
let lib_dir = make_libsodium(&target, &source_dir, &install_dir);
if target.contains("msvc") {
println!("cargo:rustc-link-lib=static=libsodium");
} else {
println!("cargo:rustc-link-lib=static=sodium");
}
println!(
"cargo:rustc-link-search=native={}",
lib_dir.to_str().unwrap()
);
let include_dir = source_dir.join("src/libsodium/include");
println!("cargo:include={}", include_dir.to_str().unwrap());
println!("cargo:lib={}", lib_dir.to_str().unwrap());
}