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Merge pull request #78 from signalapp/aarch64-cross-compilation 

Add minimal cross-compilation support for Windows and AArch64 Linux
This commit is contained in:
Ivan Nikulin 2022-09-27 16:14:52 +01:00 committed by GitHub
parent 34929928c4 3bbb1b94b6
commit 3059ba6e10
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 75 additions and 53 deletions
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43
boring-sys/build.rs
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@ -141,11 +141,13 @@ const BORING_SSL_PATH: &str = "deps/boringssl";
fn get_boringssl_cmake_config() -> cmake::Config {
let arch = std::env::var("CARGO_CFG_TARGET_ARCH").unwrap();
let os = std::env::var("CARGO_CFG_TARGET_OS").unwrap();
let host = std::env::var("HOST").unwrap();
let target = std::env::var("TARGET").unwrap();
let pwd = std::env::current_dir().unwrap();
let mut boringssl_cmake = cmake::Config::new(BORING_SSL_PATH);
// Add platform-specific parameters.
if host != target {
// Add platform-specific parameters for cross-compilation.
match os.as_ref() {
"android" => {
// We need ANDROID_NDK_HOME to be set properly.
@ -165,8 +167,6 @@ fn get_boringssl_cmake_config() -> cmake::Config {
// 21 is the minimum level tested. You can give higher value.
boringssl_cmake.define("ANDROID_NATIVE_API_LEVEL", "21");
boringssl_cmake.define("ANDROID_STL", "c++_shared");
boringssl_cmake
}
"ios" => {
@ -186,16 +186,20 @@ fn get_boringssl_cmake_config() -> cmake::Config {
};
let cflag = format!("{} {}", bitcode_cflag, target_cflag);
boringssl_cmake.define("CMAKE_ASM_FLAGS", &cflag);
boringssl_cmake.cflag(&cflag);
boringssl_cmake
}
_ => {
// Configure BoringSSL for building on 32-bit non-windows platforms.
if arch == "x86" && os != "windows" {
"windows" => {
if host.contains("windows") {
// BoringSSL's CMakeLists.txt isn't set up for cross-compiling using Visual Studio.
// Disable assembly support so that it at least builds.
boringssl_cmake.define("OPENSSL_NO_ASM", "YES");
}
}
"linux" => match arch.as_str() {
"x86" => {
boringssl_cmake.define(
"CMAKE_TOOLCHAIN_FILE",
pwd.join(BORING_SSL_PATH)
@ -203,10 +207,25 @@ fn get_boringssl_cmake_config() -> cmake::Config {
.as_os_str(),
);
}
"aarch64" => {
boringssl_cmake.define(
"CMAKE_TOOLCHAIN_FILE",
pwd.join("cmake/aarch64-linux.cmake").as_os_str(),
);
}
_ => {
eprintln!(
"warning: no toolchain file configured by boring-sys for {}",
target
);
}
},
_ => {}
}
}
boringssl_cmake
}
}
}
/// Verify that the toolchains match https://csrc.nist.gov/CSRC/media/projects/cryptographic-module-validation-program/documents/security-policies/140sp3678.pdf

3
boring-sys/cmake/aarch64-linux.cmake Normal file
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@ -0,0 +1,3 @@
set(CMAKE_SYSTEM_NAME Linux)
set(CMAKE_SYSTEM_PROCESSOR aarch64)
# Rely on environment variables to set the compiler and include paths.