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Auto merge of #130739 - jieyouxu:stage0_run_make, r=Kobzol

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Fix cargo staging for run-make tests

Follow-up to https://github.com/rust-lang/rust/pull/130642#issuecomment-2366891866 to make sure that when

```
$ COMPILETEST_FORCE_STAGE0=1 ./x test run-make --stage 0
```

is used, bootstrap cargo is used in order to avoid building stage 1 rustc. Note that run-make tests are usually not written with `--stage 0` in mind and some tests may rely on stage1 rustc (nightly) behavior, and it is expected that some tests will fail under this invocation.

This PR also fixes `tool::Cargo` staging in compiletest when preparing for `run-make` test mode, by chopping off a stage from the `compiler` passed to `tool::Cargo` such that when the user invokes with stage `N`

```
./x test run-make --stage N
```

the `run-make` test suite will be tested against the cargo built by stage `N` compiler. Let's take `N=1`, i.e. `--stage 1`, without chopping off a stage, previously `./x test run-make --stage 1` will cause stage 1 rustc + std to be built, then stage 2 rustc, and cargo will be produced by the stage 2 rustc, which is clearly not what we want. By chopping off a stage, it means that cargo will be produced by the stage 1 rustc.

cc #119946, #59864.
See discussions regarding the tool staging at https://rust-lang.zulipchat.com/#narrow/stream/326414-t-infra.2Fbootstrap/topic/.E2.9C.94.20stage1.20run-make.20tests.20now.20need.20stage2.20rustc.20built.20for.20c.2E.2E.2E.
This commit is contained in:
bors 2024-09-24 22:51:43 +00:00
commit 3f99982c63
5 changed files with 73 additions and 98 deletions
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21
src/bootstrap/src/core/build_steps/test.rs
View File

@ -1730,8 +1730,23 @@ NOTE: if you're sure you want to do this, please open an issue as to why. In the
let is_rustdoc = suite.ends_with("rustdoc-ui") || suite.ends_with("rustdoc-js");
if mode == "run-make" {
let cargo = builder.ensure(tool::Cargo { compiler, target: compiler.host });
cmd.arg("--cargo-path").arg(cargo);
let cargo_path = if builder.top_stage == 0 {
// If we're using `--stage 0`, we should provide the bootstrap cargo.
builder.initial_cargo.clone()
} else {
// We need to properly build cargo using the suitable stage compiler.
// HACK: currently tool stages are off-by-one compared to compiler stages, i.e. if
// you give `tool::Cargo` a stage 1 rustc, it will cause stage 2 rustc to be built
// and produce a cargo built with stage 2 rustc. To fix this, we need to chop off
// the compiler stage by 1 to align with expected `./x test run-make --stage N`
// behavior, i.e. we need to pass `N - 1` compiler stage to cargo. See also Miri
// which does a similar hack.
let compiler = builder.compiler(builder.top_stage - 1, compiler.host);
builder.ensure(tool::Cargo { compiler, target: compiler.host })
};
cmd.arg("--cargo-path").arg(cargo_path);
}
// Avoid depending on rustdoc when we don't need it.
@ -2088,8 +2103,6 @@ NOTE: if you're sure you want to do this, please open an issue as to why. In the
cmd.arg("--rustfix-coverage");
}
cmd.env("BOOTSTRAP_CARGO", &builder.initial_cargo);
cmd.arg("--channel").arg(&builder.config.channel);
if !builder.config.omit_git_hash {

5
src/tools/run-make-support/src/external_deps/cargo.rs
View File

@ -1,7 +1,8 @@
use crate::command::Command;
use crate::env_var;
/// Returns a command that can be used to invoke Cargo.
/// Returns a command that can be used to invoke cargo. The cargo is provided by compiletest
/// through the `CARGO` env var.
pub fn cargo() -> Command {
Command::new(env_var("BOOTSTRAP_CARGO"))
Command::new(env_var("CARGO"))
}

50
tests/run-make/compiler-builtins/rmake.rs
View File

@ -15,46 +15,36 @@
#![deny(warnings)]
use std::collections::HashSet;
use std::path::PathBuf;
use run_make_support::object::read::Object;
use run_make_support::object::read::archive::ArchiveFile;
use run_make_support::object::{ObjectSection, ObjectSymbol, RelocationTarget};
use run_make_support::rfs::{read, read_dir};
use run_make_support::{cmd, env_var, object};
use run_make_support::{cargo, object, path, target};
fn main() {
let target_dir = PathBuf::from("target");
let target = env_var("TARGET");
let target_dir = path("target");
println!("Testing compiler_builtins for {}", target);
println!("Testing compiler_builtins for {}", target());
let manifest_path = PathBuf::from("Cargo.toml");
cargo()
.args(&[
"build",
"--manifest-path",
"Cargo.toml",
"-Zbuild-std=core",
"--target",
&target(),
])
.env("RUSTFLAGS", "-Copt-level=0 -Cdebug-assertions=yes")
.env("CARGO_TARGET_DIR", &target_dir)
.env("RUSTC_BOOTSTRAP", "1")
// Visual Studio 2022 requires that the LIB env var be set so it can
// find the Windows SDK.
.env("LIB", std::env::var("LIB").unwrap_or_default())
.run();
let path = env_var("PATH");
let rustc = env_var("RUSTC");
let cargo = env_var("CARGO");
let mut cmd = cmd(cargo);
cmd.args(&[
"build",
"--manifest-path",
manifest_path.to_str().unwrap(),
"-Zbuild-std=core",
"--target",
&target,
])
.env("PATH", path)
.env("RUSTC", rustc)
.env("RUSTFLAGS", "-Copt-level=0 -Cdebug-assertions=yes")
.env("CARGO_TARGET_DIR", &target_dir)
.env("RUSTC_BOOTSTRAP", "1")
// Visual Studio 2022 requires that the LIB env var be set so it can
// find the Windows SDK.
.env("LIB", std::env::var("LIB").unwrap_or_default());
cmd.run();
let rlibs_path = target_dir.join(target).join("debug").join("deps");
let rlibs_path = target_dir.join(target()).join("debug").join("deps");
let compiler_builtins_rlib = read_dir(rlibs_path)
.find_map(|e| {
let path = e.unwrap().path();

46
tests/run-make/thumb-none-cortex-m/rmake.rs
View File

@ -14,10 +14,7 @@
//@ only-thumb
use std::path::PathBuf;
use run_make_support::rfs::create_dir;
use run_make_support::{cmd, env_var, target};
use run_make_support::{cargo, cmd, env, env_var, target};
const CRATE: &str = "cortex-m";
const CRATE_URL: &str = "https://github.com/rust-embedded/cortex-m";
@ -28,32 +25,21 @@ fn main() {
// See below link for git usage:
// https://stackoverflow.com/questions/3489173#14091182
cmd("git").args(["clone", CRATE_URL, CRATE]).run();
std::env::set_current_dir(CRATE).unwrap();
env::set_current_dir(CRATE);
cmd("git").args(["reset", "--hard", CRATE_SHA1]).run();
let target_dir = PathBuf::from("target");
let manifest_path = PathBuf::from("Cargo.toml");
let path = env_var("PATH");
let rustc = env_var("RUSTC");
let cargo = env_var("CARGO");
// FIXME: extract cargo invocations to a proper command
// https://github.com/rust-lang/rust/issues/128734
let mut cmd = cmd(cargo);
cmd.args(&[
"build",
"--manifest-path",
manifest_path.to_str().unwrap(),
"-Zbuild-std=core",
"--target",
&target(),
])
.env("PATH", path)
.env("RUSTC", rustc)
.env("CARGO_TARGET_DIR", &target_dir)
// Don't make lints fatal, but they need to at least warn
// or they break Cargo's target info parsing.
.env("RUSTFLAGS", "-Copt-level=0 -Cdebug-assertions=yes --cap-lints=warn");
cmd.run();
cargo()
.args(&[
"build",
"--manifest-path",
"Cargo.toml",
"-Zbuild-std=core",
"--target",
&target(),
])
.env("CARGO_TARGET_DIR", "target")
// Don't make lints fatal, but they need to at least warn
// or they break Cargo's target info parsing.
.env("RUSTFLAGS", "-Copt-level=0 -Cdebug-assertions=yes --cap-lints=warn")
.run();
}

49
tests/run-make/thumb-none-qemu/rmake.rs
View File

@ -14,49 +14,34 @@
//!
//! FIXME: https://github.com/rust-lang/rust/issues/128733 this test uses external
//! dependencies, and needs an active internet connection
//!
//! FIXME: https://github.com/rust-lang/rust/issues/128734 extract bootstrap cargo
//! to a proper command
//@ only-thumb
use std::path::PathBuf;
use run_make_support::{cmd, env_var, path_helpers, target};
use run_make_support::{cargo, cmd, env_var, path, target};
const CRATE: &str = "example";
fn main() {
std::env::set_current_dir(CRATE).unwrap();
let bootstrap_cargo = env_var("BOOTSTRAP_CARGO");
let path = env_var("PATH");
let rustc = env_var("RUSTC");
let target_dir = path("target");
let manifest_path = path("Cargo.toml");
let target_dir = path_helpers::path("target");
let manifest_path = path_helpers::path("Cargo.toml");
// Debug
cargo()
.args(&["run", "--target", &target()])
.env("RUSTFLAGS", "-C linker=arm-none-eabi-ld -C link-arg=-Tlink.x")
.env("CARGO_TARGET_DIR", &target_dir)
.run()
.assert_stdout_contains("x = 42");
let debug = {
let mut cmd = cmd(&bootstrap_cargo);
cmd.args(&["run", "--target", &target()])
.env("RUSTFLAGS", "-C linker=arm-none-eabi-ld -C link-arg=-Tlink.x")
.env("CARGO_TARGET_DIR", &target_dir)
.env("PATH", &path)
.env("RUSTC", &rustc);
cmd.run()
};
debug.assert_stdout_contains("x = 42");
let release = {
let mut cmd = cmd(&bootstrap_cargo);
cmd.args(&["run", "--release", "--target", &target()])
.env("RUSTFLAGS", "-C linker=arm-none-eabi-ld -C link-arg=-Tlink.x")
.env("CARGO_TARGET_DIR", &target_dir)
.env("PATH", &path)
.env("RUSTC", &rustc);
cmd.run()
};
release.assert_stdout_contains("x = 42");
// Release
cargo()
.args(&["run", "--release", "--target", &target()])
.env("RUSTFLAGS", "-C linker=arm-none-eabi-ld -C link-arg=-Tlink.x")
.env("CARGO_TARGET_DIR", &target_dir)
.run()
.assert_stdout_contains("x = 42");
}