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fn main() {
// Opt-in cfg for the long-running randomized stress tests
// used by tests/fuzz_git_watcher_stress.rs
println!("cargo::rustc-check-cfg=cfg(stress)");
// When the `zlob` feature is enabled (Zig-compiled C library):
// On Windows MSVC, explicitly link the C runtime libraries.
// Zig-compiled static libraries don't emit /DEFAULTLIB directives for the
// MSVC CRT, so symbols like strcmp, memcpy etc. would be unresolved.
if std::env::var("CARGO_FEATURE_ZLOB").is_ok() {
if !zig_available() {
panic!(
"The `zlob` feature is enabled but Zig is not installed. \
Install Zig (https://ziglang.org/download/) or build without \
`--features zlob`."
);
}
let target = std::env::var("TARGET").unwrap_or_default();
if target.contains("windows") && target.contains("msvc") {
println!("cargo:rustc-link-lib=msvcrt");
println!("cargo:rustc-link-lib=ucrt");
println!("cargo:rustc-link-lib=vcruntime");
}
} else if std::env::var("CARGO_PRIMARY_PACKAGE").is_ok() && zig_available() {
// Hint: if Zig is available but the zlob feature wasn't enabled,
// let the developer know they can get faster glob matching.
// Only emit this hint when this crate is the primary package to
// avoid noisy warnings for downstream consumers.
println!(
"cargo:warning=Zig detected but `zlob` feature is not enabled. \
Build with `--features zlob` for faster glob matching."
);
}
}
/// Probe the system for a working Zig installation.
fn zig_available() -> bool {
std::process::Command::new("zig")
.arg("version")
.stdout(std::process::Stdio::null())
.stderr(std::process::Stdio::null())
.status()
.map(|s| s.success())
.unwrap_or(false)
}