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Code Issues Packages 1 Wiki Activity

cargo: build only necessary Ninja targets when invoked by RLS

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This commit is contained in:
Bert Belder 2018-11-01 02:29:39 +01:00
parent b73b651612
commit 67944f298c
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GPG key ID: 7A77887B2E2ED461
2 changed files with 27 additions and 1 deletions
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7
BUILD.gn
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@ -18,6 +18,13 @@ group("default") {
]
}
# Set of targets that need to be built for `cargo check` to succeed.
group("cargo_check_deps") {
deps = [
":msg_rs",
]
}
config("deno_config") {
include_dirs = [ "third_party/v8" ] # This allows us to v8/src/base/ libraries.
configs = [ "third_party/v8:external_config" ]

21
build.rs
View file

@ -7,12 +7,31 @@
// TODO Combine DENO_BUILD_PATH and OUT_DIR.
use std::env;
use std::path::PathBuf;
use std::process::Command;
fn main() {
let mode = env::var("PROFILE").unwrap();
let deno_build_path = env::var("DENO_BUILD_PATH").unwrap();
// Detect if we're being invoked by the rust language server (RLS).
// Unfortunately we can't detect whether we're being run by `cargo check`.
let check_only = env::var_os("CARGO")
.map(PathBuf::from)
.as_ref()
.and_then(|p| p.file_stem())
.and_then(|f| f.to_str())
.map(|s| s.starts_with("rls"))
.unwrap_or(false);
// If we're being invoked by the RLS, build only the targets that are needed
// for `cargo check` to succeed.
let gn_target = if check_only {
"cargo_check_deps"
} else {
"deno_deps"
};
let status = Command::new("python")
.env("DENO_BUILD_PATH", &deno_build_path)
.env("DENO_BUILD_MODE", &mode)
@ -31,7 +50,7 @@ fn main() {
.env("DENO_BUILD_PATH", &deno_build_path)
.env("DENO_BUILD_MODE", &mode)
.arg("./tools/build.py")
.arg("deno_deps")
.arg(gn_target)
.arg("-v")
.status()
.expect("build.py failed");