120 lines
3.4 KiB
Rust
120 lines
3.4 KiB
Rust
use std::env;
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use std::ops::Bound;
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use std::path::PathBuf;
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fn get_env_var(name: &str) -> String {
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match env::var(name) {
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Ok(val) => val,
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Err(env::VarError::NotPresent) => String::new(),
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Err(err) => panic!("cannot get {}: {}", name, err),
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}
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}
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pub fn probe_lua() -> PathBuf {
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let include_dir = get_env_var("LUA_INC");
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let lib_dir = get_env_var("LUA_LIB");
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let lua_lib = get_env_var("LUA_LIB_NAME");
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println!("cargo:rerun-if-env-changed=LUA_INC");
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println!("cargo:rerun-if-env-changed=LUA_LIB");
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println!("cargo:rerun-if-env-changed=LUA_LIB_NAME");
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println!("cargo:rerun-if-env-changed=LUA_LINK");
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let need_lua_lib = cfg!(any(not(feature = "module"), target_os = "windows"));
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if !include_dir.is_empty() {
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if need_lua_lib {
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if lib_dir.is_empty() {
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panic!("LUA_LIB is not set");
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}
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if lua_lib.is_empty() {
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panic!("LUA_LIB_NAME is not set");
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}
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let mut link_lib = "";
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if get_env_var("LUA_LINK") == "static" {
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link_lib = "static=";
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};
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println!("cargo:rustc-link-search=native={}", lib_dir);
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println!("cargo:rustc-link-lib={}{}", link_lib, lua_lib);
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}
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return PathBuf::from(include_dir);
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}
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// Find using `pkg-config`
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#[cfg(feature = "lua54")]
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{
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let mut lua = pkg_config::Config::new()
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.range_version((Bound::Included("5.4"), Bound::Excluded("5.5")))
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.cargo_metadata(need_lua_lib)
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.probe("lua");
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if lua.is_err() {
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lua = pkg_config::Config::new()
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.cargo_metadata(need_lua_lib)
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.probe("lua5.4");
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}
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lua.unwrap().include_paths[0].clone()
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}
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#[cfg(feature = "lua53")]
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{
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let mut lua = pkg_config::Config::new()
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.range_version((Bound::Included("5.3"), Bound::Excluded("5.4")))
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.cargo_metadata(need_lua_lib)
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.probe("lua");
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if lua.is_err() {
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lua = pkg_config::Config::new()
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.cargo_metadata(need_lua_lib)
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.probe("lua5.3");
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}
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lua.unwrap().include_paths[0].clone()
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}
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#[cfg(feature = "lua52")]
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{
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let mut lua = pkg_config::Config::new()
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.range_version((Bound::Included("5.2"), Bound::Excluded("5.3")))
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.cargo_metadata(need_lua_lib)
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.probe("lua");
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if lua.is_err() {
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lua = pkg_config::Config::new()
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.cargo_metadata(need_lua_lib)
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.probe("lua5.2");
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}
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lua.unwrap().include_paths[0].clone()
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}
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#[cfg(feature = "lua51")]
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{
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let mut lua = pkg_config::Config::new()
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.range_version((Bound::Included("5.1"), Bound::Excluded("5.2")))
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.cargo_metadata(need_lua_lib)
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.probe("lua");
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if lua.is_err() {
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lua = pkg_config::Config::new()
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.cargo_metadata(need_lua_lib)
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.probe("lua5.1");
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}
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lua.unwrap().include_paths[0].clone()
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}
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#[cfg(feature = "luajit")]
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{
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let lua = pkg_config::Config::new()
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.range_version((Bound::Included("2.0.5"), Bound::Unbounded))
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.cargo_metadata(need_lua_lib)
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.probe("luajit");
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lua.unwrap().include_paths[0].clone()
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}
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}
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