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Make tools which may not build return Option.
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This makes it mandatory for other steps to have to handle the potential
failure instead of failing in an odd way later down the road.
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@Mark-Simulacrum
Mark-Simulacrum committed Oct 19, 2017
1 parent 0fcd3e7 commit 686c101
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Showing 3 changed files with 65 additions and 53 deletions.
74 changes: 40 additions & 34 deletions src/bootstrap/check.rs
View file
Expand Up @@ -340,25 +340,28 @@ impl Step for Miri {
let host = self.host;
let compiler = builder.compiler(1, host);

let miri = builder.ensure(tool::Miri { compiler, target: self.host });
let mut cargo = builder.cargo(compiler, Mode::Tool, host, "test");
cargo.arg("--manifest-path").arg(build.src.join("src/tools/miri/Cargo.toml"));

// Don't build tests dynamically, just a pain to work with
cargo.env("RUSTC_NO_PREFER_DYNAMIC", "1");
// miri tests need to know about the stage sysroot
cargo.env("MIRI_SYSROOT", builder.sysroot(compiler));
cargo.env("RUSTC_TEST_SUITE", builder.rustc(compiler));
cargo.env("RUSTC_LIB_PATH", builder.rustc_libdir(compiler));
cargo.env("MIRI_PATH", miri);

builder.add_rustc_lib_path(compiler, &mut cargo);

try_run_expecting(
build,
&mut cargo,
builder.build.config.toolstate.miri.passes(ToolState::Testing),
);
if let Some(miri) = builder.ensure(tool::Miri { compiler, target: self.host }) {
let mut cargo = builder.cargo(compiler, Mode::Tool, host, "test");
cargo.arg("--manifest-path").arg(build.src.join("src/tools/miri/Cargo.toml"));

// Don't build tests dynamically, just a pain to work with
cargo.env("RUSTC_NO_PREFER_DYNAMIC", "1");
// miri tests need to know about the stage sysroot
cargo.env("MIRI_SYSROOT", builder.sysroot(compiler));
cargo.env("RUSTC_TEST_SUITE", builder.rustc(compiler));
cargo.env("RUSTC_LIB_PATH", builder.rustc_libdir(compiler));
cargo.env("MIRI_PATH", miri);

builder.add_rustc_lib_path(compiler, &mut cargo);

try_run_expecting(
build,
&mut cargo,
builder.build.config.toolstate.miri.passes(ToolState::Testing),
);
} else {
eprintln!("failed to test miri: could not build");
}
}
}

Expand Down Expand Up @@ -391,24 +394,27 @@ impl Step for Clippy {
let host = self.host;
let compiler = builder.compiler(stage, host);

let clippy = builder.ensure(tool::Clippy { compiler, target: self.host });
let mut cargo = builder.cargo(compiler, Mode::Tool, host, "test");
cargo.arg("--manifest-path").arg(build.src.join("src/tools/clippy/Cargo.toml"));
if let Some(clippy) = builder.ensure(tool::Clippy { compiler, target: self.host }) {
let mut cargo = builder.cargo(compiler, Mode::Tool, host, "test");
cargo.arg("--manifest-path").arg(build.src.join("src/tools/clippy/Cargo.toml"));

// Don't build tests dynamically, just a pain to work with
cargo.env("RUSTC_NO_PREFER_DYNAMIC", "1");
// clippy tests need to know about the stage sysroot
cargo.env("SYSROOT", builder.sysroot(compiler));
// clippy tests need to find the driver
cargo.env("CLIPPY_DRIVER_PATH", clippy);
// Don't build tests dynamically, just a pain to work with
cargo.env("RUSTC_NO_PREFER_DYNAMIC", "1");
// clippy tests need to know about the stage sysroot
cargo.env("SYSROOT", builder.sysroot(compiler));
// clippy tests need to find the driver
cargo.env("CLIPPY_DRIVER_PATH", clippy);

builder.add_rustc_lib_path(compiler, &mut cargo);
builder.add_rustc_lib_path(compiler, &mut cargo);

try_run_expecting(
build,
&mut cargo,
builder.build.config.toolstate.clippy.passes(ToolState::Testing),
);
try_run_expecting(
build,
&mut cargo,
builder.build.config.toolstate.clippy.passes(ToolState::Testing),
);
} else {
eprintln!("failed to test clippy: could not build");
}
}
}

Expand Down
4 changes: 3 additions & 1 deletion src/bootstrap/dist.rs
View file
Expand Up @@ -1073,10 +1073,12 @@ impl Step for Rls {
t!(fs::create_dir_all(&image));

// Prepare the image directory
// We expect RLS to build, because we've exited this step above if tool
// state for RLS isn't testing.
let rls = builder.ensure(tool::Rls {
compiler: builder.compiler(stage, build.build),
target
});
}).expect("Rls to build: toolstate is testing");
install(&rls, &image.join("bin"), 0o755);
let doc = image.join("share/doc/rls");
install(&src.join("README.md"), &doc, 0o644);
Expand Down
40 changes: 22 additions & 18 deletions src/bootstrap/tool.rs
View file
Expand Up @@ -86,7 +86,7 @@ struct ToolBuild {
}

impl Step for ToolBuild {
type Output = PathBuf;
type Output = Option<PathBuf>;

fn should_run(run: ShouldRun) -> ShouldRun {
run.never()
Expand All @@ -96,7 +96,7 @@ impl Step for ToolBuild {
///
/// This will build the specified tool with the specified `host` compiler in
/// `stage` into the normal cargo output directory.
fn run(self, builder: &Builder) -> PathBuf {
fn run(self, builder: &Builder) -> Option<PathBuf> {
let build = builder.build;
let compiler = self.compiler;
let target = self.target;
Expand All @@ -116,11 +116,15 @@ impl Step for ToolBuild {

let mut cargo = prepare_tool_cargo(builder, compiler, target, "build", path);
build.run_expecting(&mut cargo, expectation);
let cargo_out = build.cargo_out(compiler, Mode::Tool, target)
.join(exe(tool, &compiler.host));
let bin = build.tools_dir(compiler).join(exe(tool, &compiler.host));
copy(&cargo_out, &bin);
bin
if expectation == BuildExpectation::Succeeding || expectation == BuildExpectation::None {
let cargo_out = build.cargo_out(compiler, Mode::Tool, target)
.join(exe(tool, &compiler.host));
let bin = build.tools_dir(compiler).join(exe(tool, &compiler.host));
copy(&cargo_out, &bin);
Some(bin)
} else {
None
}
}
}

Expand Down Expand Up @@ -229,7 +233,7 @@ macro_rules! tool {
mode: $mode,
path: $path,
expectation: BuildExpectation::None,
})
}).expect("expected to build -- BuildExpectation::None")
}
}
)+
Expand Down Expand Up @@ -277,7 +281,7 @@ impl Step for RemoteTestServer {
mode: Mode::Libstd,
path: "src/tools/remote-test-server",
expectation: BuildExpectation::None,
})
}).expect("expected to build -- BuildExpectation::None")
}
}

Expand Down Expand Up @@ -395,7 +399,7 @@ impl Step for Cargo {
mode: Mode::Librustc,
path: "src/tools/cargo",
expectation: BuildExpectation::None,
})
}).expect("BuildExpectation::None - expected to build")
}
}

Expand All @@ -406,7 +410,7 @@ pub struct Clippy {
}

impl Step for Clippy {
type Output = PathBuf;
type Output = Option<PathBuf>;
const DEFAULT: bool = true;
const ONLY_HOSTS: bool = true;

Expand All @@ -421,7 +425,7 @@ impl Step for Clippy {
});
}

fn run(self, builder: &Builder) -> PathBuf {
fn run(self, builder: &Builder) -> Option<PathBuf> {
// Clippy depends on procedural macros (serde), which requires a full host
// compiler to be available, so we need to depend on that.
builder.ensure(compile::Rustc {
Expand All @@ -446,7 +450,7 @@ pub struct Rls {
}

impl Step for Rls {
type Output = PathBuf;
type Output = Option<PathBuf>;
const DEFAULT: bool = true;
const ONLY_HOSTS: bool = true;

Expand All @@ -462,7 +466,7 @@ impl Step for Rls {
});
}

fn run(self, builder: &Builder) -> PathBuf {
fn run(self, builder: &Builder) -> Option<PathBuf> {
builder.ensure(native::Openssl {
target: self.target,
});
Expand Down Expand Up @@ -490,7 +494,7 @@ pub struct Rustfmt {
}

impl Step for Rustfmt {
type Output = PathBuf;
type Output = Option<PathBuf>;
const DEFAULT: bool = true;
const ONLY_HOSTS: bool = true;

Expand All @@ -506,7 +510,7 @@ impl Step for Rustfmt {
});
}

fn run(self, builder: &Builder) -> PathBuf {
fn run(self, builder: &Builder) -> Option<PathBuf> {
builder.ensure(ToolBuild {
compiler: self.compiler,
target: self.target,
Expand All @@ -526,7 +530,7 @@ pub struct Miri {
}

impl Step for Miri {
type Output = PathBuf;
type Output = Option<PathBuf>;
const DEFAULT: bool = true;
const ONLY_HOSTS: bool = true;

Expand All @@ -542,7 +546,7 @@ impl Step for Miri {
});
}

fn run(self, builder: &Builder) -> PathBuf {
fn run(self, builder: &Builder) -> Option<PathBuf> {
builder.ensure(ToolBuild {
compiler: self.compiler,
target: self.target,
Expand Down

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