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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
use std::error::Error;
use std::fs::File;
use std::io::Write;
use std::path::Path;
use gl_generator::{Api, Fallbacks, Profile, Registry};
use vergen_git2::{Emitter, Git2Builder};
// We can make this configurable in the future if different platforms start to have
// different needs.
fn generate_egl_bindings(out_dir: &Path) {
let mut file = File::create(out_dir.join("egl_bindings.rs")).unwrap();
Registry::new(Api::Egl, (1, 5), Profile::Core, Fallbacks::All, [])
.write_bindings(gl_generator::StaticStructGenerator, &mut file)
.unwrap();
println!("cargo:rustc-link-lib=EGL");
}
fn emit_git_sha() -> Result<(), String> {
let git_options = Git2Builder::default()
.sha(true /* short */)
.build()
.map_err(|e| e.to_string())?;
Emitter::default()
.add_instructions(&git_options)
.and_then(|emitter| emitter.fail_on_error().emit())
.map_err(|e| e.to_string())
}
fn main() -> Result<(), Box<dyn Error>> {
println!("cargo::rustc-check-cfg=cfg(servo_production)");
println!("cargo::rustc-check-cfg=cfg(servo_do_not_use_in_production)");
// Cargo does not expose the profile name to crates or their build scripts,
// but we can extract it from OUT_DIR and set a custom cfg() ourselves.
let out = std::env::var("OUT_DIR")?;
let out = Path::new(&out);
let krate = out.parent().unwrap();
let build = krate.parent().unwrap();
let profile = build
.parent()
.unwrap()
.file_name()
.unwrap()
.to_string_lossy();
if profile == "production" || profile.starts_with("production-") {
println!("cargo:rustc-cfg=servo_production");
} else {
println!("cargo:rustc-cfg=servo_do_not_use_in_production");
}
// Note: We can't use `#[cfg(windows)]`, since that would check the host platform
// and not the target platform
let target_os = std::env::var("CARGO_CFG_TARGET_OS").unwrap();
let target_env = std::env::var("CARGO_CFG_TARGET_ENV").unwrap();
if target_os == "windows" {
#[cfg(windows)]
{
let mut res = winres::WindowsResource::new();
res.set_icon("../../resources/servo.ico");
res.set_manifest_file("platform/windows/servo.exe.manifest");
res.compile().unwrap();
}
#[cfg(not(windows))]
panic!("Cross-compiling to windows is currently not supported");
} else if target_os == "macos" {
cc::Build::new()
.file("platform/macos/count_threads.c")
.compile("count_threads");
} else if target_os == "android" {
generate_egl_bindings(out);
// FIXME: We need this workaround since jemalloc-sys still links
// to libgcc instead of libunwind, but Android NDK 23c and above
// don't have libgcc. We can't disable jemalloc for Android as
// in 64-bit aarch builds, the system allocator uses tagged
// pointers by default which causes the assertions in SM & mozjs
// to fail. See https://github.com/servo/servo/issues/32175.
let mut libgcc = File::create(out.join("libgcc.a")).unwrap();
libgcc.write_all(b"INPUT(-lunwind)").unwrap();
println!("cargo:rustc-link-search=native={}", out.display());
} else if target_env == "ohos" {
generate_egl_bindings(out);
}
if let Err(error) = emit_git_sha() {
println!(
"cargo:warning=Could not generate git version information: {:?}",
error
);
println!("cargo:rustc-env=VERGEN_GIT_SHA=nogit");
}
// On MacOS, all dylib dependencies are shipped along with the binary
// in the "/lib" directory. Setting the rpath here, allows the dynamic
// linker to locate them. See `man dyld` for more info.
if target_os == "macos" {
println!("cargo:rustc-link-arg=-Wl,-rpath,@executable_path/lib/");
}
Ok(())
}
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