mirror of
https://github.com/logos-messaging/nim-ffi.git
synced 2026-05-17 15:49:27 +00:00
54 lines
2.1 KiB
Rust
54 lines
2.1 KiB
Rust
use std::path::PathBuf;
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use std::process::Command;
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fn main() {
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let manifest = PathBuf::from(std::env::var("CARGO_MANIFEST_DIR").unwrap());
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let nim_src = manifest.join("../nim_timer.nim");
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let nim_src = nim_src.canonicalize().unwrap_or(manifest.join("../nim_timer.nim"));
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// Walk up to find the nim-ffi repo root (directory containing nim_src's library)
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// The repo root is where nim c should be run from (contains config.nims).
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// We assume nim_src lives somewhere under repo_root.
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// Derive repo_root as the ancestor that contains the .nimble file or config.nims.
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let mut repo_root = nim_src.clone();
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loop {
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repo_root = match repo_root.parent() {
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Some(p) => p.to_path_buf(),
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None => break,
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};
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if repo_root.join("config.nims").exists() || repo_root.join("ffi.nimble").exists() {
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break;
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}
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}
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// Match the per-OS shared-library naming used by the CMakeLists:
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// macOS: lib<name>.dylib
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// Linux: lib<name>.so
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// Windows: <name>.dll (Cargo links the auto-generated <name>.lib import lib)
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#[cfg(target_os = "macos")]
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let out_lib = repo_root.join("libnimtimer.dylib");
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#[cfg(target_os = "linux")]
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let out_lib = repo_root.join("libnimtimer.so");
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#[cfg(target_os = "windows")]
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let out_lib = repo_root.join("nimtimer.dll");
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#[cfg(not(any(target_os = "macos", target_os = "linux", target_os = "windows")))]
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compile_error!("nim-ffi build.rs: unsupported target OS (expected macos, linux, or windows)");
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let mut cmd = Command::new("nim");
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cmd.arg("c")
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.arg("--mm:orc")
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.arg("-d:chronicles_log_level=WARN")
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.arg("--app:lib")
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.arg("--noMain")
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.arg(format!("--nimMainPrefix:libnimtimer"))
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.arg(format!("-o:{}", out_lib.display()));
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cmd.arg(&nim_src).current_dir(&repo_root);
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let status = cmd.status().expect("failed to run nim compiler");
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assert!(status.success(), "Nim compilation failed");
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println!("cargo:rustc-link-search={}", repo_root.display());
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println!("cargo:rustc-link-lib=nimtimer");
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println!("cargo:rerun-if-changed={}", nim_src.display());
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}
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