).decode(default_encoding).splitlines()]
filtered_submodules = []
submodules_names = []
+ llvm_checked_out = os.path.exists(os.path.join(self.rust_root, "src/llvm-project/.git"))
+ external_llvm_provided = self.get_toml('llvm-config') or self.downloading_llvm()
+ llvm_needed = not self.get_toml('codegen-backends', 'rust') \
+ or "llvm" in self.get_toml('codegen-backends', 'rust')
for module in submodules:
- # This is handled by native::Llvm in rustbuild, not here
if module.endswith("llvm-project"):
- continue
+ # Don't sync the llvm-project submodule if an external LLVM was
+ # provided, if we are downloading LLVM or if the LLVM backend is
+ # not being built. Also, if the submodule has been initialized
+ # already, sync it anyways so that it doesn't mess up contributor
+ # pull requests.
+ if external_llvm_provided or not llvm_needed:
+ if self.get_toml('lld') != 'true' and not llvm_checked_out:
+ continue
check = self.check_submodule(module, slow_submodules)
filtered_submodules.append((module, check))
submodules_names.append(module)
recorded = subprocess.Popen(["git", "ls-tree", "HEAD"] + submodules_names,
cwd=self.rust_root, stdout=subprocess.PIPE)
recorded = recorded.communicate()[0].decode(default_encoding).strip().splitlines()
- # { filename: hash }
recorded_submodules = {}
for data in recorded:
- # [mode, kind, hash, filename]
data = data.split()
recorded_submodules[data[3]] = data[2]
for module in filtered_submodules:
slice::from_ref(&self.build.triple)
}
- /// If the LLVM submodule has been initialized already, sync it unconditionally. This avoids
- /// contributors checking in a submodule change by accident.
- pub fn maybe_update_llvm_submodule(&self) {
- if self.in_tree_llvm_info.is_git() {
- native::update_llvm_submodule(self);
- }
- }
-
/// Executes the entire build, as configured by the flags and configuration.
pub fn build(&mut self) {
unsafe {
job::setup(self);
}
- self.maybe_update_llvm_submodule();
-
if let Subcommand::Format { check, paths } = &self.config.cmd {
return format::format(self, *check, &paths);
}
use crate::builder::{Builder, RunConfig, ShouldRun, Step};
use crate::config::TargetSelection;
use crate::util::{self, exe};
-use crate::{Build, GitRepo};
+use crate::GitRepo;
use build_helper::up_to_date;
pub struct Meta {
Err(Meta { stamp, build_llvm_config, out_dir, root: root.into() })
}
-// modified from `check_submodule` and `update_submodule` in bootstrap.py
-pub(crate) fn update_llvm_submodule(build: &Build) {
- let llvm_project = &Path::new("src").join("llvm-project");
-
- fn dir_is_empty(dir: &Path) -> bool {
- t!(std::fs::read_dir(dir)).next().is_none()
- }
-
- // NOTE: The check for the empty directory is here because when running x.py
- // the first time, the llvm submodule won't be checked out. Check it out
- // now so we can build it.
- if !build.in_tree_llvm_info.is_git() && !dir_is_empty(&build.config.src.join(llvm_project)) {
- return;
- }
-
- // check_submodule
- let checked_out = if build.config.fast_submodules {
- Some(output(
- Command::new("git")
- .args(&["rev-parse", "HEAD"])
- .current_dir(build.config.src.join(llvm_project)),
- ))
- } else {
- None
- };
-
- // update_submodules
- let recorded = output(
- Command::new("git")
- .args(&["ls-tree", "HEAD"])
- .arg(llvm_project)
- .current_dir(&build.config.src),
- );
- let hash =
- recorded.split(' ').nth(2).unwrap_or_else(|| panic!("unexpected output `{}`", recorded));
-
- // update_submodule
- if let Some(llvm_hash) = checked_out {
- if hash == llvm_hash {
- // already checked out
- return;
- }
- }
-
- println!("Updating submodule {}", llvm_project.display());
- build.run(
- Command::new("git")
- .args(&["submodule", "-q", "sync"])
- .arg(llvm_project)
- .current_dir(&build.config.src),
- );
-
- // Try passing `--progress` to start, then run git again without if that fails.
- let update = |progress: bool| {
- let mut git = Command::new("git");
- git.args(&["submodule", "update", "--init", "--recursive"]);
- if progress {
- git.arg("--progress");
- }
- git.arg(llvm_project).current_dir(&build.config.src);
- git
- };
- // NOTE: doesn't use `try_run` because this shouldn't print an error if it fails.
- if !update(true).status().map_or(false, |status| status.success()) {
- build.run(&mut update(false));
- }
-
- build.run(
- Command::new("git")
- .args(&["reset", "-q", "--hard"])
- .current_dir(build.config.src.join(llvm_project)),
- );
- build.run(
- Command::new("git")
- .args(&["clean", "-qdfx"])
- .current_dir(build.config.src.join(llvm_project)),
- );
-}
-
#[derive(Debug, Copy, Clone, Hash, PartialEq, Eq)]
pub struct Llvm {
pub target: TargetSelection,
Err(m) => m,
};
- if !builder.config.dry_run {
- update_llvm_submodule(builder);
- }
if builder.config.llvm_link_shared
&& (target.contains("windows") || target.contains("apple-darwin"))
{
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