src/bootstrap/check.rs - third_party/rust - Git at Google

 // Copyright 2016 The Rust Project Developers. See the COPYRIGHT
 // file at the top-level directory of this distribution and at
 // http://rust-lang.org/COPYRIGHT.
 //
 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.

 //! Implementation of the various `check-*` targets of the build system.
 //!
 //! This file implements the various regression test suites that we execute on
 //! our CI.

 use std::env;
 use std::fs::{self, File};
 use std::io::prelude::*;
 use std::path::{PathBuf, Path};
 use std::process::Command;

 use build_helper::output;

 use {Build, Compiler, Mode};
 use util::{self, dylib_path, dylib_path_var};

 const ADB_TEST_DIR: &'static str = "/data/tmp";

 /// Runs the `linkchecker` tool as compiled in `stage` by the `host` compiler.
 ///
 /// This tool in `src/tools` will verify the validity of all our links in the
 /// documentation to ensure we don't have a bunch of dead ones.
 pub fn linkcheck(build: &Build, stage: u32, host: &str) {
     println!("Linkcheck stage{} ({})", stage, host);
     let compiler = Compiler::new(stage, host);
     build.run(build.tool_cmd(&compiler, "linkchecker")
                    .arg(build.out.join(host).join("doc")));
 }

 /// Runs the `cargotest` tool as compiled in `stage` by the `host` compiler.
 ///
 /// This tool in `src/tools` will check out a few Rust projects and run `cargo
 /// test` to ensure that we don't regress the test suites there.
 pub fn cargotest(build: &Build, stage: u32, host: &str) {
     let ref compiler = Compiler::new(stage, host);

     // Configure PATH to find the right rustc. NB. we have to use PATH
     // and not RUSTC because the Cargo test suite has tests that will
     // fail if rustc is not spelled `rustc`.
     let path = build.sysroot(compiler).join("bin");
     let old_path = ::std::env::var("PATH").expect("");
     let sep = if cfg!(windows) { ";" } else {":" };
     let ref newpath = format!("{}{}{}", path.display(), sep, old_path);

     // Note that this is a short, cryptic, and not scoped directory name. This
     // is currently to minimize the length of path on Windows where we otherwise
     // quickly run into path name limit constraints.
     let out_dir = build.out.join("ct");
     t!(fs::create_dir_all(&out_dir));

     build.run(build.tool_cmd(compiler, "cargotest")
                    .env("PATH", newpath)
                    .arg(&build.cargo)
                    .arg(&out_dir));
 }

 /// Runs the `tidy` tool as compiled in `stage` by the `host` compiler.
 ///
 /// This tool in `src/tools` checks up on various bits and pieces of style and
 /// otherwise just implements a few lint-like checks that are specific to the
 /// compiler itself.
 pub fn tidy(build: &Build, stage: u32, host: &str) {
     println!("tidy check stage{} ({})", stage, host);
     let compiler = Compiler::new(stage, host);
     build.run(build.tool_cmd(&compiler, "tidy")
                    .arg(build.src.join("src")));
 }

 fn testdir(build: &Build, host: &str) -> PathBuf {
     build.out.join(host).join("test")
 }

 /// Executes the `compiletest` tool to run a suite of tests.
 ///
 /// Compiles all tests with `compiler` for `target` with the specified
 /// compiletest `mode` and `suite` arguments. For example `mode` can be
 /// "run-pass" or `suite` can be something like `debuginfo`.
 pub fn compiletest(build: &Build,
                    compiler: &Compiler,
                    target: &str,
                    mode: &str,
                    suite: &str) {
     println!("Check compiletest {} ({} -> {})", suite, compiler.host, target);
     let mut cmd = build.tool_cmd(compiler, "compiletest");

     // compiletest currently has... a lot of arguments, so let's just pass all
     // of them!

     cmd.arg("--compile-lib-path").arg(build.rustc_libdir(compiler));
     cmd.arg("--run-lib-path").arg(build.sysroot_libdir(compiler, target));
     cmd.arg("--rustc-path").arg(build.compiler_path(compiler));
     cmd.arg("--rustdoc-path").arg(build.rustdoc(compiler));
     cmd.arg("--src-base").arg(build.src.join("src/test").join(suite));
     cmd.arg("--build-base").arg(testdir(build, compiler.host).join(suite));
     cmd.arg("--stage-id").arg(format!("stage{}-{}", compiler.stage, target));
     cmd.arg("--mode").arg(mode);
     cmd.arg("--target").arg(target);
     cmd.arg("--host").arg(compiler.host);
     cmd.arg("--llvm-filecheck").arg(build.llvm_filecheck(&build.config.build));

     let mut flags = vec!["-Crpath".to_string()];
     if build.config.rust_optimize_tests {
         flags.push("-O".to_string());
     }
     if build.config.rust_debuginfo_tests {
         flags.push("-g".to_string());
     }

     let mut hostflags = build.rustc_flags(&compiler.host);
     hostflags.extend(flags.clone());
     cmd.arg("--host-rustcflags").arg(hostflags.join(" "));

     let mut targetflags = build.rustc_flags(&target);
     targetflags.extend(flags);
     targetflags.push(format!("-Lnative={}",
                              build.test_helpers_out(target).display()));
     cmd.arg("--target-rustcflags").arg(targetflags.join(" "));

     // FIXME: CFG_PYTHON should probably be detected more robustly elsewhere
     let python_default = "python";
     cmd.arg("--docck-python").arg(python_default);

     if build.config.build.ends_with("apple-darwin") {
         // Force /usr/bin/python on OSX for LLDB tests because we're loading the
         // LLDB plugin's compiled module which only works with the system python
         // (namely not Homebrew-installed python)
         cmd.arg("--lldb-python").arg("/usr/bin/python");
     } else {
         cmd.arg("--lldb-python").arg(python_default);
     }

     if let Some(ref vers) = build.gdb_version {
         cmd.arg("--gdb-version").arg(vers);
     }
     if let Some(ref vers) = build.lldb_version {
         cmd.arg("--lldb-version").arg(vers);
     }
     if let Some(ref dir) = build.lldb_python_dir {
         cmd.arg("--lldb-python-dir").arg(dir);
     }

     cmd.args(&build.flags.args);

     if build.config.verbose || build.flags.verbose {
         cmd.arg("--verbose");
     }

     // Only pass correct values for these flags for the `run-make` suite as it
     // requires that a C++ compiler was configured which isn't always the case.
     if suite == "run-make" {
         let llvm_config = build.llvm_config(target);
         let llvm_components = output(Command::new(&llvm_config).arg("--components"));
         let llvm_cxxflags = output(Command::new(&llvm_config).arg("--cxxflags"));
         cmd.arg("--cc").arg(build.cc(target))
            .arg("--cxx").arg(build.cxx(target))
            .arg("--cflags").arg(build.cflags(target).join(" "))
            .arg("--llvm-components").arg(llvm_components.trim())
            .arg("--llvm-cxxflags").arg(llvm_cxxflags.trim());
     } else {
         cmd.arg("--cc").arg("")
            .arg("--cxx").arg("")
            .arg("--cflags").arg("")
            .arg("--llvm-components").arg("")
            .arg("--llvm-cxxflags").arg("");
     }

     // Running a C compiler on MSVC requires a few env vars to be set, to be
     // sure to set them here.
     if target.contains("msvc") {
         for &(ref k, ref v) in build.cc[target].0.env() {
             if k != "PATH" {
                 cmd.env(k, v);
             }
         }
     }
     build.add_bootstrap_key(compiler, &mut cmd);

     cmd.arg("--adb-path").arg("adb");
     cmd.arg("--adb-test-dir").arg(ADB_TEST_DIR);
     if target.contains("android") {
         // Assume that cc for this target comes from the android sysroot
         cmd.arg("--android-cross-path")
            .arg(build.cc(target).parent().unwrap().parent().unwrap());
     } else {
         cmd.arg("--android-cross-path").arg("");
     }

     build.run(&mut cmd);
 }

 /// Run `rustdoc --test` for all documentation in `src/doc`.
 ///
 /// This will run all tests in our markdown documentation (e.g. the book)
 /// located in `src/doc`. The `rustdoc` that's run is the one that sits next to
 /// `compiler`.
 pub fn docs(build: &Build, compiler: &Compiler) {
     // Do a breadth-first traversal of the `src/doc` directory and just run
     // tests for all files that end in `*.md`
     let mut stack = vec![build.src.join("src/doc")];

     while let Some(p) = stack.pop() {
         if p.is_dir() {
             stack.extend(t!(p.read_dir()).map(|p| t!(p).path()));
             continue
         }

         if p.extension().and_then(|s| s.to_str()) != Some("md") {
             continue
         }

         println!("doc tests for: {}", p.display());
         markdown_test(build, compiler, &p);
     }
 }

 /// Run the error index generator tool to execute the tests located in the error
 /// index.
 ///
 /// The `error_index_generator` tool lives in `src/tools` and is used to
 /// generate a markdown file from the error indexes of the code base which is
 /// then passed to `rustdoc --test`.
 pub fn error_index(build: &Build, compiler: &Compiler) {
     println!("Testing error-index stage{}", compiler.stage);

     let output = testdir(build, compiler.host).join("error-index.md");
     build.run(build.tool_cmd(compiler, "error_index_generator")
                    .arg("markdown")
                    .arg(&output)
                    .env("CFG_BUILD", &build.config.build));

     markdown_test(build, compiler, &output);
 }

 fn markdown_test(build: &Build, compiler: &Compiler, markdown: &Path) {
     let mut cmd = Command::new(build.rustdoc(compiler));
     build.add_rustc_lib_path(compiler, &mut cmd);
     cmd.arg("--test");
     cmd.arg(markdown);
     cmd.arg("--test-args").arg(build.flags.args.join(" "));
     build.run(&mut cmd);
 }

 /// Run all unit tests plus documentation tests for an entire crate DAG defined
 /// by a `Cargo.toml`
 ///
 /// This is what runs tests for crates like the standard library, compiler, etc.
 /// It essentially is the driver for running `cargo test`.
 ///
 /// Currently this runs all tests for a DAG by passing a bunch of `-p foo`
 /// arguments, and those arguments are discovered from `Cargo.lock`.
 pub fn krate(build: &Build,
              compiler: &Compiler,
              target: &str,
              mode: Mode) {
     let (name, path, features) = match mode {
         Mode::Libstd => ("libstd", "src/rustc/std_shim", build.std_features()),
         Mode::Libtest => ("libtest", "src/rustc/test_shim", String::new()),
         Mode::Librustc => ("librustc", "src/rustc", build.rustc_features()),
         _ => panic!("can only test libraries"),
     };
     println!("Testing {} stage{} ({} -> {})", name, compiler.stage,
              compiler.host, target);

     // Build up the base `cargo test` command.
     let mut cargo = build.cargo(compiler, mode, target, "test");
     cargo.arg("--manifest-path")
          .arg(build.src.join(path).join("Cargo.toml"))
          .arg("--features").arg(features);

     // Generate a list of `-p` arguments to pass to the `cargo test` invocation
     // by crawling the corresponding Cargo.lock file.
     let lockfile = build.src.join(path).join("Cargo.lock");
     let mut contents = String::new();
     t!(t!(File::open(&lockfile)).read_to_string(&mut contents));
     let mut lines = contents.lines();
     while let Some(line) = lines.next() {
         let prefix = "name = \"";
         if !line.starts_with(prefix) {
             continue
         }
         lines.next(); // skip `version = ...`

         // skip crates.io or otherwise non-path crates
         if let Some(line) = lines.next() {
             if line.starts_with("source") {
                 continue
             }
         }

         let crate_name = &line[prefix.len()..line.len() - 1];

         // Right now jemalloc is our only target-specific crate in the sense
         // that it's not present on all platforms. Custom skip it here for now,
         // but if we add more this probably wants to get more generalized.
         if crate_name.contains("jemalloc") {
             continue
         }

         cargo.arg("-p").arg(crate_name);
     }

     // The tests are going to run with the *target* libraries, so we need to
     // ensure that those libraries show up in the LD_LIBRARY_PATH equivalent.
     //
     // Note that to run the compiler we need to run with the *host* libraries,
     // but our wrapper scripts arrange for that to be the case anyway.
     let mut dylib_path = dylib_path();
     dylib_path.insert(0, build.sysroot_libdir(compiler, target));
     cargo.env(dylib_path_var(), env::join_paths(&dylib_path).unwrap());

     if target.contains("android") {
         build.run(cargo.arg("--no-run"));
         krate_android(build, compiler, target, mode);
     } else {
         cargo.args(&build.flags.args);
         build.run(&mut cargo);
     }
 }

 fn krate_android(build: &Build,
                  compiler: &Compiler,
                  target: &str,
                  mode: Mode) {
     let mut tests = Vec::new();
     let out_dir = build.cargo_out(compiler, mode, target);
     find_tests(&out_dir, target, &mut tests);
     find_tests(&out_dir.join("deps"), target, &mut tests);

     for test in tests {
         build.run(Command::new("adb").arg("push").arg(&test).arg(ADB_TEST_DIR));

         let test_file_name = test.file_name().unwrap().to_string_lossy();
         let log = format!("{}/check-stage{}-T-{}-H-{}-{}.log",
                           ADB_TEST_DIR,
                           compiler.stage,
                           target,
                           compiler.host,
                           test_file_name);
         let program = format!("(cd {dir}; \
                                 LD_LIBRARY_PATH=./{target} ./{test} \
                                     --logfile {log} \
                                     {args})",
                               dir = ADB_TEST_DIR,
                               target = target,
                               test = test_file_name,
                               log = log,
                               args = build.flags.args.join(" "));

         let output = output(Command::new("adb").arg("shell").arg(&program));
         println!("{}", output);
         build.run(Command::new("adb")
                           .arg("pull")
                           .arg(&log)
                           .arg(build.out.join("tmp")));
         build.run(Command::new("adb").arg("shell").arg("rm").arg(&log));
         if !output.contains("result: ok") {
             panic!("some tests failed");
         }
     }
 }

 fn find_tests(dir: &Path,
               target: &str,
               dst: &mut Vec<PathBuf>) {
     for e in t!(dir.read_dir()).map(|e| t!(e)) {
         let file_type = t!(e.file_type());
         if !file_type.is_file() {
             continue
         }
         let filename = e.file_name().into_string().unwrap();
         if (target.contains("windows") && filename.ends_with(".exe")) ||
            (!target.contains("windows") && !filename.contains(".")) {
             dst.push(e.path());
         }
     }
 }

 pub fn android_copy_libs(build: &Build,
                          compiler: &Compiler,
                          target: &str) {
     println!("Android copy libs to emulator ({})", target);
     build.run(Command::new("adb").arg("remount"));
     build.run(Command::new("adb").args(&["shell", "rm", "-r", ADB_TEST_DIR]));
     build.run(Command::new("adb").args(&["shell", "mkdir", ADB_TEST_DIR]));
     build.run(Command::new("adb")
                       .arg("push")
                       .arg(build.src.join("src/etc/adb_run_wrapper.sh"))
                       .arg(ADB_TEST_DIR));

     let target_dir = format!("{}/{}", ADB_TEST_DIR, target);
     build.run(Command::new("adb").args(&["shell", "mkdir", &target_dir[..]]));

     for f in t!(build.sysroot_libdir(compiler, target).read_dir()) {
         let f = t!(f);
         let name = f.file_name().into_string().unwrap();
         if util::is_dylib(&name) {
             build.run(Command::new("adb")
                               .arg("push")
                               .arg(f.path())
                               .arg(&target_dir));
         }
     }
 }
	// Copyright 2016 The Rust Project Developers. See the COPYRIGHT
	// file at the top-level directory of this distribution and at
	// http://rust-lang.org/COPYRIGHT.
	//
	// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
	// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
	// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
	// option. This file may not be copied, modified, or distributed
	// except according to those terms.

	//! Implementation of the various `check-*` targets of the build system.
	//!
	//! This file implements the various regression test suites that we execute on
	//! our CI.

	use std::env;
	use std::fs::{self, File};
	use std::io::prelude::*;
	use std::path::{PathBuf, Path};
	use std::process::Command;

	use build_helper::output;

	use {Build, Compiler, Mode};
	use util::{self, dylib_path, dylib_path_var};

	const ADB_TEST_DIR: &'static str = "/data/tmp";

	/// Runs the `linkchecker` tool as compiled in `stage` by the `host` compiler.
	///
	/// This tool in `src/tools` will verify the validity of all our links in the
	/// documentation to ensure we don't have a bunch of dead ones.
	pub fn linkcheck(build: &Build, stage: u32, host: &str) {
	println!("Linkcheck stage{} ({})", stage, host);
	let compiler = Compiler::new(stage, host);
	build.run(build.tool_cmd(&compiler, "linkchecker")
	.arg(build.out.join(host).join("doc")));
	}

	/// Runs the `cargotest` tool as compiled in `stage` by the `host` compiler.
	///
	/// This tool in `src/tools` will check out a few Rust projects and run `cargo
	/// test` to ensure that we don't regress the test suites there.
	pub fn cargotest(build: &Build, stage: u32, host: &str) {
	let ref compiler = Compiler::new(stage, host);

	// Configure PATH to find the right rustc. NB. we have to use PATH
	// and not RUSTC because the Cargo test suite has tests that will
	// fail if rustc is not spelled `rustc`.
	let path = build.sysroot(compiler).join("bin");
	let old_path = ::std::env::var("PATH").expect("");
	let sep = if cfg!(windows) { ";" } else {":" };
	let ref newpath = format!("{}{}{}", path.display(), sep, old_path);

	// Note that this is a short, cryptic, and not scoped directory name. This
	// is currently to minimize the length of path on Windows where we otherwise
	// quickly run into path name limit constraints.
	let out_dir = build.out.join("ct");
	t!(fs::create_dir_all(&out_dir));

	build.run(build.tool_cmd(compiler, "cargotest")
	.env("PATH", newpath)
	.arg(&build.cargo)
	.arg(&out_dir));
	}

	/// Runs the `tidy` tool as compiled in `stage` by the `host` compiler.
	///
	/// This tool in `src/tools` checks up on various bits and pieces of style and
	/// otherwise just implements a few lint-like checks that are specific to the
	/// compiler itself.
	pub fn tidy(build: &Build, stage: u32, host: &str) {
	println!("tidy check stage{} ({})", stage, host);
	let compiler = Compiler::new(stage, host);
	build.run(build.tool_cmd(&compiler, "tidy")
	.arg(build.src.join("src")));
	}

	fn testdir(build: &Build, host: &str) -> PathBuf {
	build.out.join(host).join("test")
	}

	/// Executes the `compiletest` tool to run a suite of tests.
	///
	/// Compiles all tests with `compiler` for `target` with the specified
	/// compiletest `mode` and `suite` arguments. For example `mode` can be
	/// "run-pass" or `suite` can be something like `debuginfo`.
	pub fn compiletest(build: &Build,
	compiler: &Compiler,
	target: &str,
	mode: &str,
	suite: &str) {
	println!("Check compiletest {} ({} -> {})", suite, compiler.host, target);
	let mut cmd = build.tool_cmd(compiler, "compiletest");

	// compiletest currently has... a lot of arguments, so let's just pass all
	// of them!

	cmd.arg("--compile-lib-path").arg(build.rustc_libdir(compiler));
	cmd.arg("--run-lib-path").arg(build.sysroot_libdir(compiler, target));
	cmd.arg("--rustc-path").arg(build.compiler_path(compiler));
	cmd.arg("--rustdoc-path").arg(build.rustdoc(compiler));
	cmd.arg("--src-base").arg(build.src.join("src/test").join(suite));
	cmd.arg("--build-base").arg(testdir(build, compiler.host).join(suite));
	cmd.arg("--stage-id").arg(format!("stage{}-{}", compiler.stage, target));
	cmd.arg("--mode").arg(mode);
	cmd.arg("--target").arg(target);
	cmd.arg("--host").arg(compiler.host);
	cmd.arg("--llvm-filecheck").arg(build.llvm_filecheck(&build.config.build));

	let mut flags = vec!["-Crpath".to_string()];
	if build.config.rust_optimize_tests {
	flags.push("-O".to_string());
	}
	if build.config.rust_debuginfo_tests {
	flags.push("-g".to_string());
	}

	let mut hostflags = build.rustc_flags(&compiler.host);
	hostflags.extend(flags.clone());
	cmd.arg("--host-rustcflags").arg(hostflags.join(" "));

	let mut targetflags = build.rustc_flags(&target);
	targetflags.extend(flags);
	targetflags.push(format!("-Lnative={}",
	build.test_helpers_out(target).display()));
	cmd.arg("--target-rustcflags").arg(targetflags.join(" "));

	// FIXME: CFG_PYTHON should probably be detected more robustly elsewhere
	let python_default = "python";
	cmd.arg("--docck-python").arg(python_default);

	if build.config.build.ends_with("apple-darwin") {
	// Force /usr/bin/python on OSX for LLDB tests because we're loading the
	// LLDB plugin's compiled module which only works with the system python
	// (namely not Homebrew-installed python)
	cmd.arg("--lldb-python").arg("/usr/bin/python");
	} else {
	cmd.arg("--lldb-python").arg(python_default);
	}

	if let Some(ref vers) = build.gdb_version {
	cmd.arg("--gdb-version").arg(vers);
	}
	if let Some(ref vers) = build.lldb_version {
	cmd.arg("--lldb-version").arg(vers);
	}
	if let Some(ref dir) = build.lldb_python_dir {
	cmd.arg("--lldb-python-dir").arg(dir);
	}

	cmd.args(&build.flags.args);

	if build.config.verbose \|\| build.flags.verbose {
	cmd.arg("--verbose");
	}

	// Only pass correct values for these flags for the `run-make` suite as it
	// requires that a C++ compiler was configured which isn't always the case.
	if suite == "run-make" {
	let llvm_config = build.llvm_config(target);
	let llvm_components = output(Command::new(&llvm_config).arg("--components"));
	let llvm_cxxflags = output(Command::new(&llvm_config).arg("--cxxflags"));
	cmd.arg("--cc").arg(build.cc(target))
	.arg("--cxx").arg(build.cxx(target))
	.arg("--cflags").arg(build.cflags(target).join(" "))
	.arg("--llvm-components").arg(llvm_components.trim())
	.arg("--llvm-cxxflags").arg(llvm_cxxflags.trim());
	} else {
	cmd.arg("--cc").arg("")
	.arg("--cxx").arg("")
	.arg("--cflags").arg("")
	.arg("--llvm-components").arg("")
	.arg("--llvm-cxxflags").arg("");
	}

	// Running a C compiler on MSVC requires a few env vars to be set, to be
	// sure to set them here.
	if target.contains("msvc") {
	for &(ref k, ref v) in build.cc[target].0.env() {
	if k != "PATH" {
	cmd.env(k, v);
	}
	}
	}
	build.add_bootstrap_key(compiler, &mut cmd);

	cmd.arg("--adb-path").arg("adb");
	cmd.arg("--adb-test-dir").arg(ADB_TEST_DIR);
	if target.contains("android") {
	// Assume that cc for this target comes from the android sysroot
	cmd.arg("--android-cross-path")
	.arg(build.cc(target).parent().unwrap().parent().unwrap());
	} else {
	cmd.arg("--android-cross-path").arg("");
	}

	build.run(&mut cmd);
	}

	/// Run `rustdoc --test` for all documentation in `src/doc`.
	///
	/// This will run all tests in our markdown documentation (e.g. the book)
	/// located in `src/doc`. The `rustdoc` that's run is the one that sits next to
	/// `compiler`.
	pub fn docs(build: &Build, compiler: &Compiler) {
	// Do a breadth-first traversal of the `src/doc` directory and just run
	// tests for all files that end in `*.md`
	let mut stack = vec![build.src.join("src/doc")];

	while let Some(p) = stack.pop() {
	if p.is_dir() {
	stack.extend(t!(p.read_dir()).map(\|p\| t!(p).path()));
	continue
	}

	if p.extension().and_then(\|s\| s.to_str()) != Some("md") {
	continue
	}

	println!("doc tests for: {}", p.display());
	markdown_test(build, compiler, &p);
	}
	}

	/// Run the error index generator tool to execute the tests located in the error
	/// index.
	///
	/// The `error_index_generator` tool lives in `src/tools` and is used to
	/// generate a markdown file from the error indexes of the code base which is
	/// then passed to `rustdoc --test`.
	pub fn error_index(build: &Build, compiler: &Compiler) {
	println!("Testing error-index stage{}", compiler.stage);

	let output = testdir(build, compiler.host).join("error-index.md");
	build.run(build.tool_cmd(compiler, "error_index_generator")
	.arg("markdown")
	.arg(&output)
	.env("CFG_BUILD", &build.config.build));

	markdown_test(build, compiler, &output);
	}

	fn markdown_test(build: &Build, compiler: &Compiler, markdown: &Path) {
	let mut cmd = Command::new(build.rustdoc(compiler));
	build.add_rustc_lib_path(compiler, &mut cmd);
	cmd.arg("--test");
	cmd.arg(markdown);
	cmd.arg("--test-args").arg(build.flags.args.join(" "));
	build.run(&mut cmd);
	}

	/// Run all unit tests plus documentation tests for an entire crate DAG defined
	/// by a `Cargo.toml`
	///
	/// This is what runs tests for crates like the standard library, compiler, etc.
	/// It essentially is the driver for running `cargo test`.
	///
	/// Currently this runs all tests for a DAG by passing a bunch of `-p foo`
	/// arguments, and those arguments are discovered from `Cargo.lock`.
	pub fn krate(build: &Build,
	compiler: &Compiler,
	target: &str,
	mode: Mode) {
	let (name, path, features) = match mode {
	Mode::Libstd => ("libstd", "src/rustc/std_shim", build.std_features()),
	Mode::Libtest => ("libtest", "src/rustc/test_shim", String::new()),
	Mode::Librustc => ("librustc", "src/rustc", build.rustc_features()),
	_ => panic!("can only test libraries"),
	};
	println!("Testing {} stage{} ({} -> {})", name, compiler.stage,
	compiler.host, target);

	// Build up the base `cargo test` command.
	let mut cargo = build.cargo(compiler, mode, target, "test");
	cargo.arg("--manifest-path")
	.arg(build.src.join(path).join("Cargo.toml"))
	.arg("--features").arg(features);

	// Generate a list of `-p` arguments to pass to the `cargo test` invocation
	// by crawling the corresponding Cargo.lock file.
	let lockfile = build.src.join(path).join("Cargo.lock");
	let mut contents = String::new();
	t!(t!(File::open(&lockfile)).read_to_string(&mut contents));
	let mut lines = contents.lines();
	while let Some(line) = lines.next() {
	let prefix = "name = \"";
	if !line.starts_with(prefix) {
	continue
	}
	lines.next(); // skip `version = ...`

	// skip crates.io or otherwise non-path crates
	if let Some(line) = lines.next() {
	if line.starts_with("source") {
	continue
	}
	}

	let crate_name = &line[prefix.len()..line.len() - 1];

	// Right now jemalloc is our only target-specific crate in the sense
	// that it's not present on all platforms. Custom skip it here for now,
	// but if we add more this probably wants to get more generalized.
	if crate_name.contains("jemalloc") {
	continue
	}

	cargo.arg("-p").arg(crate_name);
	}

	// The tests are going to run with the target libraries, so we need to
	// ensure that those libraries show up in the LD_LIBRARY_PATH equivalent.
	//
	// Note that to run the compiler we need to run with the host libraries,
	// but our wrapper scripts arrange for that to be the case anyway.
	let mut dylib_path = dylib_path();
	dylib_path.insert(0, build.sysroot_libdir(compiler, target));
	cargo.env(dylib_path_var(), env::join_paths(&dylib_path).unwrap());

	if target.contains("android") {
	build.run(cargo.arg("--no-run"));
	krate_android(build, compiler, target, mode);
	} else {
	cargo.args(&build.flags.args);
	build.run(&mut cargo);
	}
	}

	fn krate_android(build: &Build,
	compiler: &Compiler,
	target: &str,
	mode: Mode) {
	let mut tests = Vec::new();
	let out_dir = build.cargo_out(compiler, mode, target);
	find_tests(&out_dir, target, &mut tests);
	find_tests(&out_dir.join("deps"), target, &mut tests);

	for test in tests {
	build.run(Command::new("adb").arg("push").arg(&test).arg(ADB_TEST_DIR));

	let test_file_name = test.file_name().unwrap().to_string_lossy();
	let log = format!("{}/check-stage{}-T-{}-H-{}-{}.log",
	ADB_TEST_DIR,
	compiler.stage,
	target,
	compiler.host,
	test_file_name);
	let program = format!("(cd {dir}; \
	LD_LIBRARY_PATH=./{target} ./{test} \
	--logfile {log} \
	{args})",
	dir = ADB_TEST_DIR,
	target = target,
	test = test_file_name,
	log = log,
	args = build.flags.args.join(" "));

	let output = output(Command::new("adb").arg("shell").arg(&program));
	println!("{}", output);
	build.run(Command::new("adb")
	.arg("pull")
	.arg(&log)
	.arg(build.out.join("tmp")));
	build.run(Command::new("adb").arg("shell").arg("rm").arg(&log));
	if !output.contains("result: ok") {
	panic!("some tests failed");
	}
	}
	}

	fn find_tests(dir: &Path,
	target: &str,
	dst: &mut Vec<PathBuf>) {
	for e in t!(dir.read_dir()).map(\|e\| t!(e)) {
	let file_type = t!(e.file_type());
	if !file_type.is_file() {
	continue
	}
	let filename = e.file_name().into_string().unwrap();
	if (target.contains("windows") && filename.ends_with(".exe")) \|\|
	(!target.contains("windows") && !filename.contains(".")) {
	dst.push(e.path());
	}
	}
	}

	pub fn android_copy_libs(build: &Build,
	compiler: &Compiler,
	target: &str) {
	println!("Android copy libs to emulator ({})", target);
	build.run(Command::new("adb").arg("remount"));
	build.run(Command::new("adb").args(&["shell", "rm", "-r", ADB_TEST_DIR]));
	build.run(Command::new("adb").args(&["shell", "mkdir", ADB_TEST_DIR]));
	build.run(Command::new("adb")
	.arg("push")
	.arg(build.src.join("src/etc/adb_run_wrapper.sh"))
	.arg(ADB_TEST_DIR));

	let target_dir = format!("{}/{}", ADB_TEST_DIR, target);
	build.run(Command::new("adb").args(&["shell", "mkdir", &target_dir[..]]));

	for f in t!(build.sysroot_libdir(compiler, target).read_dir()) {
	let f = t!(f);
	let name = f.file_name().into_string().unwrap();
	if util::is_dylib(&name) {
	build.run(Command::new("adb")
	.arg("push")
	.arg(f.path())
	.arg(&target_dir));
	}
	}
	}