96 lines
2.6 KiB
Rust
96 lines
2.6 KiB
Rust
extern crate pkg_config;
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extern crate gcc;
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use std::env;
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use std::path::PathBuf;
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fn main() {
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let target = env::var("TARGET").unwrap();
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// libressl_pnacl_sys links the libs needed.
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if target.ends_with("nacl") { return; }
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let lib_dir = env::var("OPENSSL_LIB_DIR").ok();
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let include_dir = env::var("OPENSSL_INCLUDE_DIR").ok();
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if lib_dir.is_none() && include_dir.is_none() {
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if let Ok(info) = pkg_config::find_library("openssl") {
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build_openssl_shim(&info.include_paths);
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return;
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}
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if let Some(mingw_paths) = get_mingw_in_path() {
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for path in mingw_paths {
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println!("cargo:rustc-flags=-L native={}", path);
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}
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}
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}
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let libs_env = env::var("OPENSSL_LIBS").ok();
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let libs = match libs_env {
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Some(ref v) => v.split(":").collect(),
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None => if target.contains("windows") {
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if get_mingw_in_path().is_some() && lib_dir.is_none() && include_dir.is_none() {
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vec!("eay32", "ssleay32")
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} else {
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vec!("eay32", "ssl32")
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}
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} else {
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vec!("crypto", "ssl")
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}
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};
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let mode = if env::var_os("OPENSSL_STATIC").is_some() {
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"static"
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} else {
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"dylib"
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};
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if let Some(lib_dir) = lib_dir {
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println!("cargo:rustc-flags=-L native={}", lib_dir);
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}
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let libs_arg = libs.iter().fold(String::new(), |args, lib| args + &format!(" -l {0}={1}", mode, lib));
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println!("cargo:rustc-flags={0}", libs_arg);
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let mut include_dirs = vec![];
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if let Some(include_dir) = include_dir {
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include_dirs.push(PathBuf::from(&include_dir));
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}
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build_openssl_shim(&include_dirs);
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}
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fn build_openssl_shim(include_paths: &[PathBuf]) {
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let mut config = gcc::Config::new();
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for path in include_paths {
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config.include(path);
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}
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config.file("src/openssl_shim.c")
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.compile("libopenssl_shim.a");
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}
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fn get_mingw_in_path() -> Option<Vec<String>> {
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match env::var_os("PATH") {
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Some(env_path) => {
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let paths: Vec<String> = env::split_paths(&env_path).filter_map(|path| {
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use std::ascii::AsciiExt;
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match path.to_str() {
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Some(path_str) => {
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if path_str.to_ascii_lowercase().contains("mingw") {
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Some(path_str.to_string())
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} else { None }
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},
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None => None
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}
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}).collect();
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if paths.len() > 0 { Some(paths) } else { None }
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},
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None => None
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}
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}
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