e9f88bdb89
- the provided-crate source identity counts the .rs files of src/ and literal include targets only: hidden entries, target, nested packages (a fuzz folder), stale lockfiles and notes no longer make makepad run refuse to start - the build scripts that embed that identity rerun when srchash.rs changes - a refused save is reported when it is saved (56 ms, was 1 s) - the declaration rollback snapshot covers only the visible crates' entries Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
78 lines
4 KiB
Rust
78 lines
4 KiB
Rust
//! The loader's build: MAKEPAD_RUN_PROVENANCE (build_stamp.rs: content hashes of the packages this
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//! binary compiles, never git state) and the source identity of each provided crate.
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use std::path::PathBuf;
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#[path = "../../libs/relax/base/src/json.rs"]
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#[allow(dead_code)]
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mod json;
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#[path = "../../libs/relax/base/src/srchash.rs"]
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#[allow(dead_code)]
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mod srchash;
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#[path = "../../libs/relax/build_stamp.rs"]
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mod build_stamp;
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use build_stamp::vfs;
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/// The crates this binary provides (src/lib.rs registers them).
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const PROVIDED: &[&str] = &[
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"relax-provided-fixture",
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"makepad-live-id",
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"makepad-script",
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"makepad-script-std",
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"makepad-script-census",
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"makepad-script-compute",
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"makepad-shader",
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"makepad-tween-script",
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"makepad-script-audio-aot",
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"makepad-hal",
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];
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fn main() {
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// Windows: Relax runs the program's main on the process's main thread; give it the 8 MiB
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// macOS and Linux main threads have (a PE's default reserve is 1-2 MiB)
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if std::env::var("CARGO_CFG_TARGET_OS").as_deref() == Ok("windows") {
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if std::env::var("CARGO_CFG_TARGET_ENV").as_deref() == Ok("msvc") {
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println!("cargo:rustc-link-arg-bins=/STACK:8388608");
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} else if std::env::var("CARGO_ENCODED_RUSTFLAGS").is_ok_and(|f| f.contains("linker-flavor=ld.lld")) {
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// Rust's LLD called directly in MinGW mode (the Makepad Builder's GNU toolchain)
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println!("cargo:rustc-link-arg-bins=--stack=8388608");
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} else {
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println!("cargo:rustc-link-arg-bins=-Wl,--stack,8388608");
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}
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}
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// ELF: the #[relax_api] entries (makepad-relax-api) sit in the `relax_api` section, reached
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// only through __start_/__stop_relax_api; LLD's default start-stop-gc would drop every
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// object's section that nothing else references
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let os = std::env::var("CARGO_CFG_TARGET_OS").unwrap_or_default();
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if !matches!(os.as_str(), "windows" | "macos" | "ios") && std::env::var("CARGO_CFG_TARGET_ARCH").as_deref() != Ok("wasm32") {
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println!("cargo:rustc-link-arg-bins=-Wl,-z,nostart-stop-gc");
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}
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println!("cargo:rerun-if-changed=build.rs");
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println!("cargo:rerun-if-changed=../../libs/relax/base/src/json.rs");
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println!("cargo:rerun-if-changed=../../libs/relax/base/src/srchash.rs");
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println!("cargo:rerun-if-changed=../../libs/relax/build_stamp.rs");
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let dir = PathBuf::from(std::env::var("CARGO_MANIFEST_DIR").unwrap());
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let g = build_stamp::graph(&dir);
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// the loader's closure holds the provided crates' closures: their files are watched here
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println!("cargo:rustc-env=MAKEPAD_RUN_PROVENANCE={}", g.provenance(&[&dir.join("../../libs/relax"), &dir], ""));
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// MAKEPAD_RUN_SRC_<crate>: the source identity (srchash.rs) of each provided crate as this build
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// compiles it (its resolved features and dependencies)
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for name in PROVIDED {
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let root = g.pkgs.iter().position(|p| p.name == *name).unwrap_or_else(|| panic!("{} is not a dependency", name));
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let manifest = srchash::closure_manifest(&g.pkgs, root);
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let output = PathBuf::from(std::env::var_os("OUT_DIR").unwrap()).join(format!("{name}.src.bin"));
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std::fs::write(output, srchash::encode_manifest(&manifest)).expect("write provided source manifest");
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for i in g.closure(root) {
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let p = &g.pkgs[i];
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if p.dir.contains("/.cargo/registry/") || p.dir.contains("/.cargo/git/") { continue; }
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// Directory watches catch additions, including an initially absent build.rs.
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println!("cargo:rerun-if-changed={}", p.dir);
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let key = format!("{}@{}", p.name.replace('-', "_"), p.version);
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for ((package, path), _) in &manifest {
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if (package == &key || package == &format!("host:{key}")) && !path.starts_with('\0') {
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println!("cargo:rerun-if-changed={}", PathBuf::from(&p.dir).join(path).display());
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}
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}
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}
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println!("cargo:rustc-env=MAKEPAD_RUN_SRC_{}={:016x}", name.replace('-', "_"), srchash::manifest_hash(&manifest));
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}
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}
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