mirror of
https://github.com/luxfi/precompile.git
synced 2026-09-24 00:26:21 +00:00
zeekay
72b6c2d371
Metadata polish for the public registry: switch from `license = "MIT"` (wrong) to `license-file = "LICENSE"` with the actual Lux Ecosystem License 1.2 vendored in-crate, declare `links = "luxprecompile"` so cargo enforces the single-source-of-truth for the sys crate, add README/homepage/authors, and add a docs.rs section that disables the link step (docs.rs has no libluxprecompile.dylib). build.rs: skip linking entirely on docs.rs, consult /usr/local/lib as a standard install fallback in addition to the in-tree dist/ path, and emit rerun-if-env-changed hints. Existing in-tree dev workflow is unchanged; downstream consumers must install libluxprecompile.dylib externally (the 18 MiB Go-built dylib exceeds crates.io's 10 MiB tarball limit, so vendoring is not viable). Published: https://crates.io/crates/luxprecompile-sys/0.1.0
60 lines
2.2 KiB
Rust
60 lines
2.2 KiB
Rust
use std::env;
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use std::path::PathBuf;
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fn main() {
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// docs.rs cannot satisfy the system dependency. Skip the link entirely.
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if env::var("DOCS_RS").is_ok() {
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return;
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}
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// Search order for libluxprecompile:
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// 1. LUX_PRECOMPILE_LIB_DIR env var (explicit override)
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// 2. ~/work/lux/precompile/dist/ (in-tree dev default)
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// 3. /usr/local/lib (standard install location)
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// 4. System default library path
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//
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// The library itself (libluxprecompile.{dylib,so,a}) is built from
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// the Go sources at github.com/luxfi/precompile — it is NOT vendored
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// in this crate because it would exceed the crates.io 10 MiB limit
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// (the dylib is ~18 MiB). Consumers must install it separately; see
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// the crate README for instructions.
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let mut found_dir: Option<PathBuf> = None;
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if let Ok(lib_dir) = env::var("LUX_PRECOMPILE_LIB_DIR") {
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let p = PathBuf::from(&lib_dir);
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println!("cargo:rustc-link-search=native={}", p.display());
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found_dir = Some(p);
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} else if let Some(home) = env::var_os("HOME") {
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let dist = PathBuf::from(home).join("work/lux/precompile/dist");
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if dist.exists() {
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println!("cargo:rustc-link-search=native={}", dist.display());
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found_dir = Some(dist);
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}
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}
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// Always consult /usr/local/lib as a fallback (standard install path).
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let usrlocal = PathBuf::from("/usr/local/lib");
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if usrlocal.exists() {
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println!("cargo:rustc-link-search=native={}", usrlocal.display());
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if found_dir.is_none() {
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found_dir = Some(usrlocal.clone());
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}
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}
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println!("cargo:rustc-link-lib=dylib=luxprecompile");
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// macOS: bake rpath so consumers don't have to set DYLD_LIBRARY_PATH
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// at runtime for the common install locations.
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if cfg!(target_os = "macos") {
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println!("cargo:rustc-link-arg=-Wl,-rpath,/usr/local/lib");
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if let Some(dir) = found_dir {
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println!("cargo:rustc-link-arg=-Wl,-rpath,{}", dir.display());
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}
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}
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// Rerun if env knob changes.
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println!("cargo:rerun-if-env-changed=LUX_PRECOMPILE_LIB_DIR");
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println!("cargo:rerun-if-env-changed=DOCS_RS");
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}
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