mirror of
https://github.com/denoland/deno
synced 2024-09-19 08:02:31 +00:00
ec17239f46
Plus some minor improvements and clean-ups: * Resolve DENO_BUILD_PATH to an absolute path if necessary. * Rename DENO_BUILD_PATH to GN_OUT_DIR in places where it is supposed to be set by the build system (and not a user configuration variable). * Output Cargo `rerun-if-*-changed` instructions first, so even if the build itself fails, configuration changes will still trigger a re-run of build.rs. * Remove TODOs that are impossible. * Re-run build.rs when the flatbuffer definition file changes.
86 lines
2.7 KiB
Rust
86 lines
2.7 KiB
Rust
// Copyright 2018 the Deno authors. All rights reserved. MIT license.
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// Run "cargo build -vv" if you want to see gn output.
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#![deny(warnings)]
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use std::env;
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use std::path::{self, Path, PathBuf};
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use std::process::Command;
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fn main() {
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// Cargo sets PROFILE to either "debug" or "release", which conveniently
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// matches the build modes we support.
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let mode = env::var("PROFILE").unwrap();
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// Normally we configure GN+Ninja to build into Cargo's OUT_DIR.
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// However, when DENO_BUILD_PATH is set, perform the ninja build in that dir
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// instead. This is used by CI to avoid building V8 etc twice.
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let out_dir = env::var_os("OUT_DIR").unwrap();
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let gn_out_dir = match env::var_os("DENO_BUILD_PATH") {
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None => abs_path(out_dir),
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Some(deno_build_path) => abs_path(deno_build_path),
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};
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// Give cargo some instructions. We do this first so the `rerun-if-*-changed`
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// directives can take effect even if something the build itself fails.
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println!("cargo:rustc-env=GN_OUT_DIR={}", gn_out_dir);
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println!("cargo:rustc-link-search=native={}/obj", gn_out_dir);
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println!("cargo:rustc-link-lib=static=deno_deps");
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println!("cargo:rerun-if-changed={}", abs_path("src/msg.fbs"));
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println!("cargo:rerun-if-env-changed=DENO_BUILD_PATH");
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// TODO: this is obviously not appropriate here.
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println!("cargo:rerun-if-env-changed=APPVEYOR_REPO_COMMIT");
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// Detect if we're being invoked by the rust language server (RLS).
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// Unfortunately we can't detect whether we're being run by `cargo check`.
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let check_only = env::var_os("CARGO")
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.map(PathBuf::from)
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.as_ref()
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.and_then(|p| p.file_stem())
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.and_then(|f| f.to_str())
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.map(|s| s.starts_with("rls"))
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.unwrap_or(false);
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// If we're being invoked by the RLS, build only the targets that are needed
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// for `cargo check` to succeed.
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let gn_target = if check_only {
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"cargo_check_deps"
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} else {
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"deno_deps"
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};
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let status = Command::new("python")
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.env("DENO_BUILD_PATH", &gn_out_dir)
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.env("DENO_BUILD_MODE", &mode)
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.arg("./tools/setup.py")
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.status()
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.expect("setup.py failed");
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assert!(status.success());
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let status = Command::new("python")
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.env("DENO_BUILD_PATH", &gn_out_dir)
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.env("DENO_BUILD_MODE", &mode)
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.arg("./tools/build.py")
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.arg(gn_target)
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.arg("-v")
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.status()
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.expect("build.py failed");
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assert!(status.success());
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}
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// Utility function to make a path absolute, normalizing it to use forward
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// slashes only. The returned value is an owned String, otherwise panics.
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fn abs_path<P: AsRef<Path>>(path: P) -> String {
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env::current_dir()
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.unwrap()
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.join(path)
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.to_str()
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.unwrap()
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.to_owned()
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.chars()
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.map(|c| if path::is_separator(c) { '/' } else { c })
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.collect()
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}
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