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extern crate cc;
use std::env;
use std::ffi::{OsStr, OsString};
use std::fs;
use std::path::{Path, PathBuf};
use std::process::Command;
pub fn source_dir() -> PathBuf {
Path::new(env!("CARGO_MANIFEST_DIR")).join("openssl")
}
pub fn version() -> &'static str {
env!("CARGO_PKG_VERSION")
}
pub struct Build {
out_dir: Option<PathBuf>,
target: Option<String>,
host: Option<String>,
// Only affects non-windows builds for now.
openssl_dir: Option<PathBuf>,
}
pub struct Artifacts {
include_dir: PathBuf,
lib_dir: PathBuf,
bin_dir: PathBuf,
libs: Vec<String>,
target: String,
}
impl Build {
pub fn new() -> Build {
Build {
out_dir: env::var_os("OUT_DIR").map(|s| PathBuf::from(s).join("openssl-build")),
target: env::var("TARGET").ok(),
host: env::var("HOST").ok(),
openssl_dir: Some(PathBuf::from("/usr/local/ssl")),
}
}
pub fn out_dir<P: AsRef<Path>>(&mut self, path: P) -> &mut Build {
self.out_dir = Some(path.as_ref().to_path_buf());
self
}
pub fn target(&mut self, target: &str) -> &mut Build {
self.target = Some(target.to_string());
self
}
pub fn host(&mut self, host: &str) -> &mut Build {
self.host = Some(host.to_string());
self
}
pub fn openssl_dir<P: AsRef<Path>>(&mut self, path: P) -> &mut Build {
self.openssl_dir = Some(path.as_ref().to_path_buf());
self
}
fn cmd_make(&self) -> Command {
let host = &self.host.as_ref().expect("HOST dir not set")[..];
if host.contains("dragonfly")
|| host.contains("freebsd")
|| host.contains("openbsd")
|| host.contains("solaris")
|| host.contains("illumos")
{
Command::new("gmake")
} else {
Command::new("make")
}
}
#[cfg(windows)]
fn check_env_var(&self, var_name: &str) -> Option<bool> {
env::var_os(var_name).map(|s| {
if s == "1" {
// a message to stdout, let user know asm is force enabled
println!(
"{}: nasm.exe is force enabled by the \
'OPENSSL_RUST_USE_NASM' env var.",
env!("CARGO_PKG_NAME")
);
true
} else if s == "0" {
// a message to stdout, let user know asm is force disabled
println!(
"{}: nasm.exe is force disabled by the \
'OPENSSL_RUST_USE_NASM' env var.",
env!("CARGO_PKG_NAME")
);
false
} else {
panic!(
"The environment variable {} is set to an unacceptable value: {:?}",
var_name, s
);
}
})
}
#[cfg(windows)]
fn is_nasm_ready(&self) -> bool {
self.check_env_var("OPENSSL_RUST_USE_NASM")
.unwrap_or_else(|| {
// On Windows, use cmd `where` command to check if nasm is installed
let wherenasm = Command::new("cmd")
.args(&["/C", "where nasm"])
.output()
.expect("Failed to execute `cmd`.");
wherenasm.status.success()
})
}
#[cfg(not(windows))]
fn is_nasm_ready(&self) -> bool {
// We assume that nobody would run nasm.exe on a non-windows system.
false
}
pub fn build(&mut self) -> Artifacts {
let target = &self.target.as_ref().expect("TARGET dir not set")[..];
let host = &self.host.as_ref().expect("HOST dir not set")[..];
let out_dir = self.out_dir.as_ref().expect("OUT_DIR not set");
let build_dir = out_dir.join("build");
let install_dir = out_dir.join("install");
if build_dir.exists() {
fs::remove_dir_all(&build_dir).unwrap();
}
if install_dir.exists() {
fs::remove_dir_all(&install_dir).unwrap();
}
let inner_dir = build_dir.join("src");
fs::create_dir_all(&inner_dir).unwrap();
cp_r(&source_dir(), &inner_dir);
let perl_program =
env::var("OPENSSL_SRC_PERL").unwrap_or(env::var("PERL").unwrap_or("perl".to_string()));
let mut configure = Command::new(perl_program);
configure.arg("./Configure");
// Change the install directory to happen inside of the build directory.
if host.contains("pc-windows-gnu") {
configure.arg(&format!("--prefix={}", sanitize_sh(&install_dir)));
} else if host.contains("pc-windows-msvc") {
// On Windows, the prefix argument does not support \ path seperators
// when cross compiling.
// Always use / as a path seperator instead of \, since that works for both
// native and cross builds.
configure.arg(&format!(
"--prefix={}",
install_dir.to_str().unwrap().replace("\\", "/")
));
} else {
configure.arg(&format!("--prefix={}", install_dir.display()));
}
// Specify that openssl directory where things are loaded at runtime is
// not inside our build directory. Instead this should be located in the
// default locations of the OpenSSL build scripts, or as specified by whatever
// configured this builder.
if target.contains("windows") {
configure.arg("--openssldir=SYS$MANAGER:[OPENSSL]");
} else {
let openssl_dir = self
.openssl_dir
.as_ref()
.expect("path to the openssl directory must be set");
let mut dir_arg: OsString = "--openssldir=".into();
dir_arg.push(openssl_dir);
configure.arg(dir_arg);
}
configure
// No shared objects, we just want static libraries
.arg("no-dso")
.arg("no-shared")
// Should be off by default on OpenSSL 1.1.0, but let's be extra sure
.arg("no-ssl3")
// No need to build tests, we won't run them anyway
.arg("no-tests")
// Nothing related to zlib please
.arg("no-comp")
.arg("no-zlib")
.arg("no-zlib-dynamic")
// Avoid multilib-postfix for build targets that specify it
.arg("--libdir=lib");
if cfg!(not(feature = "legacy")) {
configure.arg("no-legacy");
}
if cfg!(feature = "weak-crypto") {
configure
.arg("enable-md2")
.arg("enable-rc5")
.arg("enable-weak-ssl-ciphers");
} else {
configure
.arg("no-md2")
.arg("no-rc5")
.arg("no-weak-ssl-ciphers");
}
if cfg!(not(feature = "camellia")) {
configure.arg("no-camellia");
}
if cfg!(not(feature = "idea")) {
configure.arg("no-idea");
}
if cfg!(not(feature = "seed")) {
configure.arg("no-seed");
}
if target.contains("musl") {
// Engine module fails to compile on musl (it needs linux/version.h
// right now) but we don't actually need this most of the time.
// Disable engine module unless force-engine feature specified
if !cfg!(feature = "force-engine") {
configure.arg("no-engine");
}
} else if target.contains("windows") {
// We can build the engine feature, but the build doesn't seem
// to correctly pick up crypt32.lib functions such as
// `__imp_CertOpenStore` when building the capieng engine.
// Let's disable just capieng.
configure.arg("no-capieng");
}
if target.contains("musl") {
// MUSL doesn't implement some of the libc functions that the async
// stuff depends on, and we don't bind to any of that in any case.
configure.arg("no-async");
}
// On Android it looks like not passing no-stdio may cause a build
// failure (#13), but most other platforms need it for things like
// loading system certificates so only disable it on Android.
if target.contains("android") {
configure.arg("no-stdio");
}
if target.contains("msvc") {
// On MSVC we need nasm.exe to compile the assembly files.
// ASM compiling will be enabled if nasm.exe is installed, unless
// the environment variable `OPENSSL_RUST_USE_NASM` is set.
if self.is_nasm_ready() {
// a message to stdout, let user know asm is enabled
println!(
"{}: Enable the assembly language routines in building OpenSSL.",
env!("CARGO_PKG_NAME")
);
} else {
configure.arg("no-asm");
}
}
let os = match target {
"aarch64-apple-darwin" => "darwin64-arm64-cc",
// Note that this, and all other android targets, aren't using the
// `android64-aarch64` (or equivalent) builtin target. That
// apparently has a crazy amount of build logic in OpenSSL 1.1.1
// that bypasses basically everything `cc` does, so let's just cop
// out and say it's linux and hope it works.
"aarch64-linux-android" => "linux-aarch64",
"aarch64-unknown-freebsd" => "BSD-generic64",
"aarch64-unknown-linux-gnu" => "linux-aarch64",
"aarch64-unknown-linux-musl" => "linux-aarch64",
"aarch64-alpine-linux-musl" => "linux-aarch64",
"aarch64-unknown-netbsd" => "BSD-generic64",
"aarch64_be-unknown-netbsd" => "BSD-generic64",
"aarch64-pc-windows-msvc" => "VC-WIN64-ARM",
"aarch64-uwp-windows-msvc" => "VC-WIN64-ARM-UWP",
"arm-linux-androideabi" => "linux-armv4",
"armv7-linux-androideabi" => "linux-armv4",
"arm-unknown-linux-gnueabi" => "linux-armv4",
"arm-unknown-linux-gnueabihf" => "linux-armv4",
"arm-unknown-linux-musleabi" => "linux-armv4",
"arm-unknown-linux-musleabihf" => "linux-armv4",
"armv5te-unknown-linux-gnueabi" => "linux-armv4",
"armv5te-unknown-linux-musleabi" => "linux-armv4",
"armv6-unknown-freebsd" => "BSD-generic32",
"armv6-alpine-linux-musleabihf" => "linux-armv6",
"armv7-unknown-freebsd" => "BSD-armv4",
"armv7-unknown-linux-gnueabi" => "linux-armv4",
"armv7-unknown-linux-musleabi" => "linux-armv4",
"armv7-unknown-linux-gnueabihf" => "linux-armv4",
"armv7-unknown-linux-musleabihf" => "linux-armv4",
"armv7-alpine-linux-musleabihf" => "linux-armv4",
"armv7-unknown-netbsd-eabihf" => "BSD-generic32",
"asmjs-unknown-emscripten" => "gcc",
"i586-unknown-linux-gnu" => "linux-elf",
"i586-unknown-linux-musl" => "linux-elf",
"i586-alpine-linux-musl" => "linux-elf",
"i586-unknown-netbsd" => "BSD-x86-elf",
"i686-apple-darwin" => "darwin-i386-cc",
"i686-linux-android" => "linux-elf",
"i686-pc-windows-gnu" => "mingw",
"i686-pc-windows-msvc" => "VC-WIN32",
"i686-unknown-freebsd" => "BSD-x86-elf",
"i686-unknown-haiku" => "haiku-x86",
"i686-unknown-linux-gnu" => "linux-elf",
"i686-unknown-linux-musl" => "linux-elf",
"i686-unknown-netbsd" => "BSD-x86-elf",
"i686-uwp-windows-msvc" => "VC-WIN32-UWP",
"loongarch64-unknown-linux-gnu" => "linux-generic64",
"mips-unknown-linux-gnu" => "linux-mips32",
"mips-unknown-linux-musl" => "linux-mips32",
"mips64-unknown-linux-gnuabi64" => "linux64-mips64",
"mips64-unknown-linux-muslabi64" => "linux64-mips64",
"mips64el-unknown-linux-gnuabi64" => "linux64-mips64",
"mips64el-unknown-linux-muslabi64" => "linux64-mips64",
"mipsel-unknown-linux-gnu" => "linux-mips32",
"mipsel-unknown-linux-musl" => "linux-mips32",
"powerpc-unknown-freebsd" => "BSD-ppc",
"powerpc-unknown-linux-gnu" => "linux-ppc",
"powerpc-unknown-linux-gnuspe" => "linux-ppc",
"powerpc-unknown-netbsd" => "BSD-generic32",
"powerpc64-unknown-freebsd" => "BSD-ppc64",
"powerpc64-unknown-linux-gnu" => "linux-ppc64",
"powerpc64-unknown-linux-musl" => "linux-ppc64",
"powerpc64le-unknown-freebsd" => "BSD-ppc64le",
"powerpc64le-unknown-linux-gnu" => "linux-ppc64le",
"powerpc64le-unknown-linux-musl" => "linux-ppc64le",
"powerpc64le-alpine-linux-musl" => "linux-ppc64le",
"riscv64gc-unknown-freebsd" => "BSD-riscv64",
"riscv64gc-unknown-linux-gnu" => "linux64-riscv64",
"riscv64gc-unknown-linux-musl" => "linux64-riscv64",
"riscv64-alpine-linux-musl" => "linux64-riscv64",
"riscv64gc-unknown-netbsd" => "BSD-generic64",
"s390x-unknown-linux-gnu" => "linux64-s390x",
"sparc64-unknown-netbsd" => "BSD-generic64",
"s390x-unknown-linux-musl" => "linux64-s390x",
"s390x-alpine-linux-musl" => "linux64-s390x",
"sparcv9-sun-solaris" => "solaris64-sparcv9-gcc",
"thumbv7a-uwp-windows-msvc" => "VC-WIN32-ARM-UWP",
"x86_64-apple-darwin" => "darwin64-x86_64-cc",
"x86_64-linux-android" => "linux-x86_64",
"x86_64-linux" => "linux-x86_64",
"x86_64-pc-windows-gnu" => "mingw64",
"x86_64-pc-windows-msvc" => "VC-WIN64A",
"x86_64-unknown-freebsd" => "BSD-x86_64",
"x86_64-unknown-dragonfly" => "BSD-x86_64",
"x86_64-unknown-haiku" => "haiku-x86_64",
"x86_64-unknown-illumos" => "solaris64-x86_64-gcc",
"x86_64-unknown-linux-gnu" => "linux-x86_64",
"x86_64-unknown-linux-musl" => "linux-x86_64",
"x86_64-alpine-linux-musl" => "linux-x86_64",
"x86_64-unknown-openbsd" => "BSD-x86_64",
"x86_64-unknown-netbsd" => "BSD-x86_64",
"x86_64-uwp-windows-msvc" => "VC-WIN64A-UWP",
"x86_64-sun-solaris" => "solaris64-x86_64-gcc",
"wasm32-unknown-emscripten" => "gcc",
"wasm32-unknown-unknown" => "gcc",
"wasm32-wasi" => "gcc",
"aarch64-apple-ios" => "ios64-cross",
"x86_64-apple-ios" => "iossimulator-xcrun",
"aarch64-apple-ios-sim" => "iossimulator-xcrun",
_ => panic!("don't know how to configure OpenSSL for {}", target),
};
let mut ios_isysroot: std::option::Option<String> = None;
configure.arg(os);
// If we're not on MSVC we configure cross compilers and cross tools and
// whatnot. Note that this doesn't happen on MSVC b/c things are pretty
// different there and this isn't needed most of the time anyway.
if !target.contains("msvc") {
let mut cc = cc::Build::new();
cc.target(target).host(host).warnings(false).opt_level(2);
let compiler = cc.get_compiler();
configure.env("CC", compiler.path());
let path = compiler.path().to_str().unwrap();
// Both `cc::Build` and `./Configure` take into account
// `CROSS_COMPILE` environment variable. So to avoid double
// prefix, we unset `CROSS_COMPILE` for `./Configure`.
configure.env_remove("CROSS_COMPILE");
let ar = cc.get_archiver();
configure.env("AR", ar.get_program());
if ar.get_args().count() != 0 {
// On some platforms (like emscripten on windows), the ar to use may not be a
// single binary, but instead a multi-argument command like `cmd /c emar.bar`.
// We can't convey that through `AR` alone, and so also need to set ARFLAGS.
configure.env(
"ARFLAGS",
ar.get_args().collect::<Vec<_>>().join(OsStr::new(" ")),
);
}
let ranlib = cc.get_ranlib();
// OpenSSL does not support RANLIBFLAGS. Jam the flags in RANLIB.
let mut args = vec![ranlib.get_program()];
args.extend(ranlib.get_args());
configure.env("RANLIB", args.join(OsStr::new(" ")));
// Make sure we pass extra flags like `-ffunction-sections` and
// other things like ARM codegen flags.
let mut skip_next = false;
let mut is_isysroot = false;
for arg in compiler.args() {
// For whatever reason `-static` on MUSL seems to cause
// issues...
if target.contains("musl") && arg == "-static" {
continue;
}
// cc includes an `-arch` flag for Apple platforms, but we've
// already selected an arch implicitly via the target above, and
// OpenSSL contains about the conflict if both are specified.
if target.contains("apple") {
if arg == "-arch" {
skip_next = true;
continue;
}
}
// cargo-lipo specifies this but OpenSSL complains
if target.contains("apple-ios") {
if arg == "-isysroot" {
is_isysroot = true;
continue;
}
if is_isysroot {
is_isysroot = false;
ios_isysroot = Some(arg.to_str().unwrap().to_string());
continue;
}
}
if skip_next {
skip_next = false;
continue;
}
configure.arg(arg);
}
if os.contains("iossimulator") {
if let Some(ref isysr) = ios_isysroot {
configure.env(
"CC",
&format!(
"xcrun -sdk iphonesimulator cc -isysroot {}",
sanitize_sh(&Path::new(isysr))
),
);
}
}
if target == "x86_64-pc-windows-gnu" {
// For whatever reason OpenSSL 1.1.1 fails to build on
// `x86_64-pc-windows-gnu` in our docker container due to an
// error about "too many sections". Having no idea what this
// error is about some quick googling yields
// https://github.com/cginternals/glbinding/issues/135 which
// mysteriously mentions `-Wa,-mbig-obj`, passing a new argument
// to the assembler. Now I have no idea what `-mbig-obj` does
// for Windows nor why it would matter, but it does seem to fix
// compilation issues.
//
// Note that another entirely unrelated issue -
// https://github.com/assimp/assimp/issues/177 - was fixed by
// splitting a large file, so presumably OpenSSL has a large
// file soemwhere in it? Who knows!
configure.arg("-Wa,-mbig-obj");
}
if target.contains("pc-windows-gnu") && path.ends_with("-gcc") {
// As of OpenSSL 1.1.1 the build system is now trying to execute
// `windres` which doesn't exist when we're cross compiling from
// Linux, so we may need to instruct it manually to know what
// executable to run.
let windres = format!("{}-windres", &path[..path.len() - 4]);
configure.env("WINDRES", &windres);
}
if target.contains("emscripten") {
// As of OpenSSL 1.1.1 the source apparently wants to include
// `stdatomic.h`, but this doesn't exist on Emscripten. After
// reading OpenSSL's source where the error is, we define this
// magical (and probably
// compiler-internal-should-not-be-user-defined) macro to say
// "no atomics are available" and avoid including such a header.
configure.arg("-D__STDC_NO_ATOMICS__");
}
if target.contains("wasi") {
configure.args([
// Termios isn't available whatsoever on WASM/WASI so we disable that
"no-ui-console",
// WASI doesn't support UNIX sockets so we preemptively disable it
"no-sock",
// WASI doesn't have a concept of syslog, so we disable it
"-DNO_SYSLOG",
// WASI doesn't support (p)threads. Disabling preemptively.
"no-threads",
// WASI/WASM aren't really friends with ASM, so we disable it as well.
"no-asm",
// Disables the AFALG engine (AFALG-ENGine)
// Since AFALG depends on `AF_ALG` support on the linux kernel side
// it makes sense that we can't use it.
"no-afalgeng",
"-DOPENSSL_NO_AFALGENG=1",
// wasm lacks signal support; to enable minimal signal emulation, compile with
// -D_WASI_EMULATED_SIGNAL and link with -lwasi-emulated-signal
// The link argument is output in the `Artifacts::print_cargo_metadata` method
"-D_WASI_EMULATED_SIGNAL",
// WASI lacks process-associated clocks; to enable emulation of the `times` function using the wall
// clock, which isn't sensitive to whether the program is running or suspended, compile with
// -D_WASI_EMULATED_PROCESS_CLOCKS and link with -lwasi-emulated-process-clocks
// The link argument is output in the `Artifacts::print_cargo_metadata` method
"-D_WASI_EMULATED_PROCESS_CLOCKS",
// WASI lacks a true mmap; to enable minimal mmap emulation, compile
// with -D_WASI_EMULATED_MMAN and link with -lwasi-emulated-mman
// The link argument is output in the `Artifacts::print_cargo_metadata` method
"-D_WASI_EMULATED_MMAN",
// WASI lacks process identifiers; to enable emulation of the `getpid` function using a
// placeholder value, which doesn't reflect the host PID of the program, compile with
// -D_WASI_EMULATED_GETPID and link with -lwasi-emulated-getpid
// The link argument is output in the `Artifacts::print_cargo_metadata` method
"-D_WASI_EMULATED_GETPID",
// WASI doesn't have chmod right now, so don't try to use it.
"-DNO_CHMOD",
]);
}
if target.contains("musl") {
// Hack around openssl/openssl#7207 for now
configure.arg("-DOPENSSL_NO_SECURE_MEMORY");
}
}
// And finally, run the perl configure script!
configure.current_dir(&inner_dir);
self.run_command(configure, "configuring OpenSSL build");
// On MSVC we use `nmake.exe` with a slightly different invocation, so
// have that take a different path than the standard `make` below.
if target.contains("msvc") {
let mut build =
cc::windows_registry::find(target, "nmake.exe").expect("failed to find nmake");
build.arg("build_libs").current_dir(&inner_dir);
self.run_command(build, "building OpenSSL");
let mut install =
cc::windows_registry::find(target, "nmake.exe").expect("failed to find nmake");
install.arg("install_dev").current_dir(&inner_dir);
self.run_command(install, "installing OpenSSL");
} else {
let mut depend = self.cmd_make();
depend.arg("depend").current_dir(&inner_dir);
self.run_command(depend, "building OpenSSL dependencies");
let mut build = self.cmd_make();
build.arg("build_libs").current_dir(&inner_dir);
if !cfg!(windows) {
if let Some(s) = env::var_os("CARGO_MAKEFLAGS") {
build.env("MAKEFLAGS", s);
}
}
if let Some(ref isysr) = ios_isysroot {
let components: Vec<&str> = isysr.split("/SDKs/").collect();
build.env("CROSS_TOP", components[0]);
build.env("CROSS_SDK", components[1]);
}
self.run_command(build, "building OpenSSL");
let mut install = self.cmd_make();
install.arg("install_dev").current_dir(&inner_dir);
self.run_command(install, "installing OpenSSL");
}
let libs = if target.contains("msvc") {
vec!["libssl".to_string(), "libcrypto".to_string()]
} else {
vec!["ssl".to_string(), "crypto".to_string()]
};
fs::remove_dir_all(&inner_dir).unwrap();
Artifacts {
lib_dir: install_dir.join("lib"),
bin_dir: install_dir.join("bin"),
include_dir: install_dir.join("include"),
libs: libs,
target: target.to_string(),
}
}
fn run_command(&self, mut command: Command, desc: &str) {
println!("running {:?}", command);
let status = command.status();
let (status_or_failed, error) = match status {
Ok(status) if status.success() => return,
Ok(status) => ("Exit status", format!("{}", status)),
Err(failed) => ("Failed to execute", format!("{}", failed)),
};
panic!(
"
Error {}:
Command: {:?}
{}: {}
",
desc, command, status_or_failed, error
);
}
}
fn cp_r(src: &Path, dst: &Path) {
for f in fs::read_dir(src).unwrap() {
let f = f.unwrap();
let path = f.path();
let name = path.file_name().unwrap();
// Skip git metadata as it's been known to cause issues (#26) and
// otherwise shouldn't be required
if name.to_str() == Some(".git") {
continue;
}
let dst = dst.join(name);
let ty = f.file_type().unwrap();
if ty.is_dir() {
fs::create_dir_all(&dst).unwrap();
cp_r(&path, &dst);
} else if ty.is_symlink() {
// not needed to build
if path.iter().any(|p| p == "cloudflare-quiche") {
continue;
}
panic!("can't copy symlink {path:?}");
} else {
let _ = fs::remove_file(&dst);
if let Err(e) = fs::copy(&path, &dst) {
panic!("failed to copy {path:?} to {dst:?}: {e}");
}
}
}
}
fn sanitize_sh(path: &Path) -> String {
if !cfg!(windows) {
return path.to_str().unwrap().to_string();
}
let path = path.to_str().unwrap().replace("\\", "/");
return change_drive(&path).unwrap_or(path);
fn change_drive(s: &str) -> Option<String> {
let mut ch = s.chars();
let drive = ch.next().unwrap_or('C');
if ch.next() != Some(':') {
return None;
}
if ch.next() != Some('/') {
return None;
}
Some(format!("/{}/{}", drive, &s[drive.len_utf8() + 2..]))
}
}
impl Artifacts {
pub fn include_dir(&self) -> &Path {
&self.include_dir
}
pub fn lib_dir(&self) -> &Path {
&self.lib_dir
}
pub fn libs(&self) -> &[String] {
&self.libs
}
pub fn print_cargo_metadata(&self) {
println!("cargo:rustc-link-search=native={}", self.lib_dir.display());
for lib in self.libs.iter() {
println!("cargo:rustc-link-lib=static={}", lib);
}
println!("cargo:include={}", self.include_dir.display());
println!("cargo:lib={}", self.lib_dir.display());
if self.target.contains("windows") {
println!("cargo:rustc-link-lib=user32");
println!("cargo:rustc-link-lib=crypt32");
} else if self.target == "wasm32-wasi" {
println!("cargo:rustc-link-lib=wasi-emulated-signal");
println!("cargo:rustc-link-lib=wasi-emulated-process-clocks");
println!("cargo:rustc-link-lib=wasi-emulated-mman");
println!("cargo:rustc-link-lib=wasi-emulated-getpid");
}
}
}