Skip to content
This repository was archived by the owner on Apr 15, 2026. It is now read-only.

Commit ccd2e25

Browse files
Firestar99Firestar99
committed
refactor update_spec_files to allow querying target_specs dir without updating
1 parent 1b25b5a commit ccd2e25

2 files changed

Lines changed: 59 additions & 40 deletions

File tree

‎crates/cargo-gpu/src/install.rs‎

Lines changed: 3 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -3,7 +3,7 @@
33
use crate::spirv_source::{
44
get_channel_from_rustc_codegen_spirv_build_script, query_metadata, FindPackage as _,
55
};
6-
use crate::target_specs::update_spec_files;
6+
use crate::target_specs::update_target_specs_files;
77
use crate::{cache_dir, spirv_source::SpirvSource};
88
use anyhow::Context as _;
99
use spirv_builder::SpirvBuilder;
@@ -260,9 +260,8 @@ package = "rustc_codegen_spirv"
260260
log::info!("selected toolchain channel `{toolchain_channel:?}`");
261261

262262
log::debug!("update_spec_files");
263-
let target_spec_dir =
264-
update_spec_files(&source, &install_dir, &dummy_metadata, skip_rebuild)
265-
.context("writing target spec files")?;
263+
let target_spec_dir = update_target_specs_files(&source, &dummy_metadata, !skip_rebuild)
264+
.context("writing target spec files")?;
266265

267266
if !skip_rebuild {
268267
log::debug!("ensure_toolchain_and_components_exist");

‎crates/cargo-gpu/src/target_specs.rs‎

Lines changed: 56 additions & 36 deletions
Original file line numberDiff line numberDiff line change
@@ -34,22 +34,29 @@ fn copy_spec_files(src: &Path, dst: &Path) -> anyhow::Result<()> {
3434
Ok(())
3535
}
3636

37-
/// Add the target spec files to the crate.
38-
pub fn update_spec_files(
37+
/// Computes the `target-specs` directory to use and updates the target spec files, if enabled.
38+
pub fn update_target_specs_files(
3939
source: &SpirvSource,
40-
install_dir: &Path,
4140
dummy_metadata: &Metadata,
42-
skip_rebuild: bool,
41+
update_files: bool,
4342
) -> anyhow::Result<PathBuf> {
44-
let mut target_specs_dst = install_dir.join("target-specs");
45-
if !skip_rebuild {
46-
if let Ok(target_specs) = dummy_metadata.find_package("rustc_codegen_spirv-target-specs") {
47-
log::info!(
48-
"target-specs: found crate `rustc_codegen_spirv-target-specs` with manifest at `{}`",
49-
target_specs.manifest_path
50-
);
43+
log::info!(
44+
"target-specs: Resolving target specs `{}`",
45+
if update_files {
46+
"and update them"
47+
} else {
48+
"without updating"
49+
}
50+
);
51+
52+
let mut target_specs_dst = source.install_dir()?.join("target-specs");
53+
if let Ok(target_specs) = dummy_metadata.find_package("rustc_codegen_spirv-target-specs") {
54+
log::info!(
55+
"target-specs: found crate `rustc_codegen_spirv-target-specs` with manifest at `{}`",
56+
target_specs.manifest_path
57+
);
5158

52-
let target_specs_src = target_specs
59+
let target_specs_src = target_specs
5360
.manifest_path
5461
.as_std_path()
5562
.parent()
@@ -58,34 +65,47 @@ pub fn update_spec_files(
5865
src.is_dir().then_some(src)
5966
})
6067
.context("Could not find `target-specs` directory within `rustc_codegen_spirv-target-specs` dependency")?;
61-
if source.is_path() {
62-
// skip copy
63-
log::info!(
64-
"target-specs: source is local path, use target-specs from `{}`",
65-
target_specs_src.display()
66-
);
67-
target_specs_dst = target_specs_src;
68-
} else {
69-
// copy over the target-specs
70-
log::info!(
71-
"target-specs: Copy target specs from `{}`",
72-
target_specs_src.display()
73-
);
68+
log::info!(
69+
"target-specs: found `rustc_codegen_spirv-target-specs` with `target-specs` directory `{}`",
70+
target_specs_dst.display()
71+
);
72+
73+
if source.is_path() {
74+
// skip copy
75+
log::info!(
76+
"target-specs resolution: source is local path, use target-specs directly from `{}`",
77+
target_specs_dst.display()
78+
);
79+
target_specs_dst = target_specs_src;
80+
} else {
81+
// copy over the target-specs
82+
log::info!(
83+
"target-specs resolution: coping target-specs from `{}`{}",
84+
target_specs_dst.display(),
85+
if update_files { "" } else { " was skipped" }
86+
);
87+
if update_files {
7488
copy_spec_files(&target_specs_src, &target_specs_dst)
7589
.context("copying target-specs json files")?;
7690
}
77-
} else {
78-
// use legacy target specs bundled with cargo gpu
79-
if source.is_path() {
80-
// This is a stupid situation:
81-
// * We can't be certain that there are `target-specs` in the local checkout (there may be some in `spirv-builder`)
82-
// * We can't dump our legacy ones into the `install_dir`, as that would modify the local rust-gpu checkout
83-
// -> do what the old cargo gpu did, one global dir for all target specs
84-
// and hope parallel runs don't shred each other
85-
target_specs_dst = cache_dir()?.join("legacy-target-specs-for-local-checkout");
86-
}
91+
}
92+
} else {
93+
// use legacy target specs bundled with cargo gpu
94+
if source.is_path() {
95+
// This is a stupid situation:
96+
// * We can't be certain that there are `target-specs` in the local checkout (there may be some in `spirv-builder`)
97+
// * We can't dump our legacy ones into the `install_dir`, as that would modify the local rust-gpu checkout
98+
// -> do what the old cargo gpu did, one global dir for all target specs
99+
// and hope parallel runs don't shred each other
100+
target_specs_dst = cache_dir()?.join("legacy-target-specs-for-local-checkout");
101+
}
102+
log::info!(
103+
"target-specs resolution: legacy target specs in directory `{}`",
104+
target_specs_dst.display()
105+
);
106+
if update_files {
87107
log::info!(
88-
"target-specs: Writing legacy target specs to `{}`",
108+
"target-specs: Writing legacy target specs into `{}`",
89109
target_specs_dst.display()
90110
);
91111
write_legacy_target_specs(&target_specs_dst)?;

0 commit comments

Comments
 (0)