extern crate pkg_config;
extern crate cmake;
use std::env;
use std::fs::{self, File};
use std::io::prelude::*;
use std::path::{Path, PathBuf};
use std::process::Command;
macro_rules! t {
($e:expr) => (match $e{
Ok(e) => e,
Err(e) => panic!("{} failed with {}", stringify!($e), e),
})
}
fn main() {
let https = env::var("CARGO_FEATURE_HTTPS").is_ok();
let ssh = env::var("CARGO_FEATURE_SSH").is_ok();
if ssh {
register_dep("SSH2");
}
if https {
register_dep("OPENSSL");
}
let has_pkgconfig = Command::new("pkg-config").output().is_ok();
if env::var("LIBGIT2_SYS_USE_PKG_CONFIG").is_ok() {
if pkg_config::find_library("libgit2").is_ok() {
return
}
}
let target = env::var("TARGET").unwrap();
let windows = target.contains("windows");
let msvc = target.contains("msvc");
let mut cfg = cmake::Config::new("libgit2");
if msvc {
cfg.cflag("/GL-");
cfg.define("STATIC_CRT", "OFF");
}
if ssh && (windows || !has_pkgconfig) {
if let Ok(libssh2_include) = env::var("DEP_SSH2_INCLUDE") {
if msvc {
cfg.cflag(format!("/I{}", libssh2_include))
.cflag("/DGIT_SSH");
} else {
cfg.cflag(format!("-I{}", libssh2_include))
.cflag("-DGIT_SSH");
}
}
}
if ssh {
cfg.register_dep("SSH2");
} else {
cfg.define("USE_SSH", "OFF");
}
if https {
cfg.register_dep("OPENSSL");
} else {
cfg.define("USE_OPENSSL", "OFF");
}
let _ = fs::remove_dir_all(env::var("OUT_DIR").unwrap());
t!(fs::create_dir_all(env::var("OUT_DIR").unwrap()));
let dst = cfg.define("BUILD_SHARED_LIBS", "OFF")
.define("BUILD_CLAR", "OFF")
.define("CURL", "OFF")
.register_dep("Z")
.build();
if ssh && !msvc {
let flags = dst.join("build/CMakeFiles/git2.dir/flags.make");
let mut contents = String::new();
t!(t!(File::open(flags)).read_to_string(&mut contents));
if !contents.contains("-DGIT_SSH") {
panic!("libgit2 failed to find libssh2, and SSH support is required");
}
}
if target.contains("windows") {
println!("cargo:rustc-link-lib=winhttp");
println!("cargo:rustc-link-lib=rpcrt4");
println!("cargo:rustc-link-lib=ole32");
println!("cargo:rustc-link-lib=crypt32");
println!("cargo:rustc-link-lib=static=git2");
println!("cargo:rustc-link-search=native={}/lib", dst.display());
return
}
if env::var("HOST") == env::var("TARGET") {
let pc = dst.join("lib/pkgconfig/libgit2.pc");
let mut contents = String::new();
t!(t!(File::open(&pc)).read_to_string(&mut contents));
let contents = contents.replace(" -lssh2 ", " ");
t!(t!(File::create(&pc)).write_all(contents.as_bytes()));
prepend("PKG_CONFIG_PATH", dst.join("lib/pkgconfig"));
if pkg_config::Config::new().statik(true).find("libgit2").is_ok() {
return
}
}
println!("cargo:rustc-link-lib=static=git2");
println!("cargo:rustc-link-search=native={}", dst.join("lib").display());
if target.contains("apple") {
println!("cargo:rustc-link-lib=iconv");
}
}
fn register_dep(dep: &str) {
match env::var(&format!("DEP_{}_ROOT", dep)) {
Ok(s) => {
prepend("PKG_CONFIG_PATH", Path::new(&s).join("lib/pkgconfig"));
}
Err(..) => {}
}
}
fn prepend(var: &str, val: PathBuf) {
let prefix = env::var(var).unwrap_or(String::new());
let mut v = vec![val];
v.extend(env::split_paths(&prefix));
env::set_var(var, &env::join_paths(v).unwrap());
}