Support cargo check (#1128)

- Based on code from @qti3e and @piscisaureus in #724 and #1125
  respectively.
- TODO The DENO_BUILD_PATH env var must be supplied and must be an
  absolute path, this restriction should be removed in future work.

1 files changed, 39 insertions, 0 deletions

diff --git a/build.rs b/build.rs
new file mode 100644
index 000000000..489f9f9d2
--- /dev/null
+++ b/build.rs
@@ -0,0 +1,39 @@
+// Copyright 2018 the Deno authors. All rights reserved. MIT license.
+
+// Run "cargo build -vv" if you want to see gn output.
+// TODO For the time being you must set an env var DENO_BUILD_PATH
+// which might be `pwd`/out/debug or `pwd`/out/release.
+// TODO Currently DENO_BUILD_PATH must be absolute.
+// TODO Combine DENO_BUILD_PATH and OUT_DIR.
+
+use std::env;
+use std::process::Command;
+
+fn main() {
+  let mode = env::var("PROFILE").unwrap();
+  let deno_build_path = env::var("DENO_BUILD_PATH").unwrap();
+
+  let status = Command::new("python")
+    .env("DENO_BUILD_PATH", &deno_build_path)
+    .env("DENO_BUILD_MODE", &mode)
+    .arg("./tools/setup.py")
+    .status()
+    .expect("setup.py failed");
+  assert!(status.success());
+
+  // These configurations must be outputted after tools/setup.py is run.
+  println!("cargo:rustc-link-search=native={}/obj", deno_build_path);
+  println!("cargo:rustc-link-lib=static=deno_deps");
+  // TODO Remove this and only use OUT_DIR at some point.
+  println!("cargo:rustc-env=DENO_BUILD_PATH={}", deno_build_path);
+
+  let status = Command::new("python")
+    .env("DENO_BUILD_PATH", &deno_build_path)
+    .env("DENO_BUILD_MODE", &mode)
+    .arg("./tools/build.py")
+    .arg("deno_deps")
+    .arg("-v")
+    .status()
+    .expect("build.py failed");
+  assert!(status.success());
+}