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Refactor build script. (#546)

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Apply some DRY to build.rs to pave the way for upcoming changes.
This commit is contained in:
Ben Noordhuis 2020-11-30 16:35:56 +01:00 committed by GitHub
parent 73d4bfebc5
commit 5b0764a811
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 46 additions and 55 deletions
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101
build.rs
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@ -144,20 +144,7 @@ fn platform() -> &'static str {
}
fn download_ninja_gn_binaries() {
let root = env::current_dir().unwrap();
let out_dir = env::var_os("OUT_DIR").expect(
"The 'OUT_DIR' environment is not set (it should be something like \
'target/debug/rusty_v8-{hash}').",
);
let out_dir_abs = root.join(out_dir);
// This would be target/debug or target/release
let target_dir = out_dir_abs
.parent()
.unwrap()
.parent()
.unwrap()
.parent()
.unwrap();
let target_dir = build_dir();
let bin_dir = target_dir
.join("ninja_gn_binaries-20200827")
.join(platform());
@ -183,7 +170,7 @@ fn download_ninja_gn_binaries() {
env::set_var("NINJA", ninja);
}
fn static_lib_url() -> (String, String) {
fn static_lib_url() -> String {
let default_base = "https://github.com/denoland/rusty_v8/releases/download";
let base =
env::var("RUSTY_V8_MIRROR").unwrap_or_else(|_| default_base.into());
@ -191,19 +178,50 @@ fn static_lib_url() -> (String, String) {
let target = env::var("TARGET").unwrap();
if cfg!(target_os = "windows") {
// Note: we always use the release build on windows.
let url = format!("{}/v{}/rusty_v8_release_{}.lib", base, version, target);
let static_lib_name = "rusty_v8.lib".to_string();
(url, static_lib_name)
format!("{}/v{}/rusty_v8_release_{}.lib", base, version, target)
} else {
let profile = env::var("PROFILE").unwrap();
assert!(profile == "release" || profile == "debug");
let url =
format!("{}/v{}/librusty_v8_{}_{}.a", base, version, profile, target);
let static_lib_name = "librusty_v8.a".to_string();
(url, static_lib_name)
format!("{}/v{}/librusty_v8_{}_{}.a", base, version, profile, target)
}
}
fn static_lib_name() -> &'static str {
match cfg!(target_os = "windows") {
true => "rusty_v8.lib",
false => "librusty_v8.a",
}
}
fn static_lib_path() -> PathBuf {
static_lib_dir().join(static_lib_name())
}
fn static_lib_dir() -> PathBuf {
build_dir().join("gn_out").join("obj")
}
fn build_dir() -> PathBuf {
let root = env::current_dir().unwrap();
// target/debug//build/rusty_v8-d9e5a424d4f96994/out/
let out_dir = env::var_os("OUT_DIR").expect(
"The 'OUT_DIR' environment is not set (it should be something like \
'target/debug/rusty_v8-{hash}').",
);
let out_dir_abs = root.join(out_dir);
// This would be target/debug or target/release
out_dir_abs
.parent()
.unwrap()
.parent()
.unwrap()
.parent()
.unwrap()
.to_path_buf()
}
fn download_file(url: String, filename: PathBuf) {
if !url.starts_with("http:") && !url.starts_with("https:") {
fs::copy(&url, filename).unwrap();
@ -243,30 +261,14 @@ fn download_file(url: String, filename: PathBuf) {
}
fn download_static_lib_binaries() {
let (url, static_lib_name) = static_lib_url();
let url = static_lib_url();
println!("static lib URL: {}", url);
let root = env::current_dir().unwrap();
// target/debug//build/rusty_v8-d9e5a424d4f96994/out/
let out_dir = env::var_os("OUT_DIR").unwrap();
let out_dir_abs = root.join(out_dir);
// This would be target/debug or target/release
let target_dir = out_dir_abs
.parent()
.unwrap()
.parent()
.unwrap()
.parent()
.unwrap();
let obj_dir = target_dir.join("gn_out").join("obj");
std::fs::create_dir_all(&obj_dir).unwrap();
println!("cargo:rustc-link-search={}", obj_dir.display());
let filename = obj_dir.join(static_lib_name);
let dir = static_lib_dir();
std::fs::create_dir_all(&dir).unwrap();
println!("cargo:rustc-link-search={}", dir.display());
let filename = static_lib_path();
if filename.exists() {
println!("static lib already exists {}", filename.display());
println!("To re-download this file, it must be manually deleted.");
@ -322,18 +324,7 @@ fn find_compatible_system_clang() -> Option<PathBuf> {
// Download chromium's clang into OUT_DIR because Cargo will not allow us to
// modify the source directory.
fn clang_download() -> PathBuf {
let root = env::current_dir().unwrap();
// target/debug//build/rusty_v8-d9e5a424d4f96994/out/
let out_dir = env::var_os("OUT_DIR").unwrap();
let clang_base_path = root
.join(out_dir)
.parent()
.unwrap()
.parent()
.unwrap()
.parent()
.unwrap()
.join("clang");
let clang_base_path = build_dir().join("clang");
println!("clang_base_path {}", clang_base_path.display());
let status = Command::new("python")
.arg("./tools/clang/scripts/update.py")