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use std::{env, fs, io::Write, path::Path};
pub fn metabuild() {
if env::var("CARGO_MANIFEST_DIR").is_err() {
panic!("`metabuild` must be called from a build script");
}
println!("cargo:rerun-if-env-changed=PROFILE");
if env::var("CARGO_CFG_TARGET_ENV").as_deref() != Ok("msvc") || env::var("PROFILE").as_deref() != Ok("release") {
return;
}
override_msvcrt_lib();
println!("cargo:rustc-link-arg=/NODEFAULTLIB:libvcruntimed.lib");
println!("cargo:rustc-link-arg=/NODEFAULTLIB:vcruntime.lib");
println!("cargo:rustc-link-arg=/NODEFAULTLIB:vcruntimed.lib");
println!("cargo:rustc-link-arg=/NODEFAULTLIB:libcmtd.lib");
println!("cargo:rustc-link-arg=/NODEFAULTLIB:msvcrt.lib");
println!("cargo:rustc-link-arg=/NODEFAULTLIB:msvcrtd.lib");
println!("cargo:rustc-link-arg=/NODEFAULTLIB:libucrt.lib");
println!("cargo:rustc-link-arg=/NODEFAULTLIB:libucrtd.lib");
println!("cargo:rustc-link-arg=/DEFAULTLIB:libcmt.lib");
println!("cargo:rustc-link-arg=/DEFAULTLIB:libvcruntime.lib");
println!("cargo:rustc-link-arg=/DEFAULTLIB:ucrt.lib");
}
fn override_msvcrt_lib() {
let arch = std::env::var("CARGO_CFG_TARGET_ARCH");
let machine: &[u8] = if arch.as_deref() == Ok("x86_64") {
&[0x64, 0x86]
} else if arch.as_deref() == Ok("x86") {
&[0x4C, 0x01]
} else {
return;
};
let bytes: &[u8] = &[
1, 0, 94, 3, 96, 98, 60, 0, 0, 0, 1, 0, 0, 0, 0, 0, 132, 1, 46, 100, 114, 101, 99, 116,
118, 101, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 60, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 10, 16, 0, 46, 100, 114, 101, 99, 116, 118, 101, 0, 0, 0, 0, 1, 0, 0, 0, 3, 0, 4, 0,
0, 0,
];
let out_dir = env::var("OUT_DIR").unwrap();
let path = Path::new(&out_dir).join("msvcrt.lib");
let f = fs::OpenOptions::new()
.write(true)
.create_new(true)
.open(&path);
if let Ok(mut f) = f {
f.write_all(machine).unwrap();
f.write_all(bytes).unwrap();
}
println!("cargo:rustc-link-search=native={}", out_dir);
}