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Support BUILD_TOP environment for sandboxed builds #4140

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Merged
pronebird merged 1 commit into from
Dec 10, 2025
Merged

Support BUILD_TOP environment for sandboxed builds #4140

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27 changes: 17 additions & 10 deletions nym-vpn-core/crates/nym-wg-go/build.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -4,22 +4,29 @@
use std::{env, fs, path::PathBuf};

fn main() {
let manifest_path = env::var_os("CARGO_MANIFEST_DIR").expect("manifest dir is not set");
let target = env::var("TARGET").expect("target is not set");
let target_os = env::var("CARGO_CFG_TARGET_OS").expect("target os is not set");

let build_dir = PathBuf::from(manifest_path).join("../../../build/lib");
// Support BUILD_TOP for sandbox builds where the source directory is read-only.
// Falls back to the traditional relative path from CARGO_MANIFEST_DIR.
let build_dir = if let Ok(build_top) = env::var("BUILD_TOP") {
PathBuf::from(build_top).join("build/lib")
} else {
let manifest_path = env::var_os("CARGO_MANIFEST_DIR").expect("manifest dir is not set");
let build_dir = PathBuf::from(manifest_path).join("../../../build/lib");

// canonicalize() will fail if the build directory does not exist
if !build_dir.exists() {
fs::create_dir_all(&build_dir).expect("failed to create build dir");
}
// canonicalize() will fail if the build directory does not exist
if !build_dir.exists() {
fs::create_dir_all(&build_dir).expect("failed to create build dir");
}

let mut build_dir = build_dir
.canonicalize()
.expect("failed to canonicalize build dir path");
build_dir
.canonicalize()
.expect("failed to canonicalize build dir path")
};

build_dir.push(target);
let mut build_dir = build_dir;
build_dir.push(&target);

// CI may only provide universal builds
if target_os == "macos" {
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