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|
use std::env;
use std::ffi::OsString;
use std::fs;
use std::path::{Path, PathBuf};
use std::process::Command;
#[cfg(feature = "libevdev-1-10")]
// ver_str is string of the form "major.minor.patch"
fn parse_version(ver_str: &str) -> Option<(u32, u32, u32)> {
let mut major_minor_patch = ver_str
.split(".")
.map(|str| str.parse::<u32>().unwrap());
let major = major_minor_patch.next()?;
let minor = major_minor_patch.next()?;
let patch = major_minor_patch.next()?;
Some((major, minor, patch))
}
fn main() -> Result<(), Box<dyn std::error::Error>> {
if env::var_os("TARGET") == env::var_os("HOST") {
let mut config = pkg_config::Config::new();
config.print_system_libs(false);
match config.probe("libevdev") {
Ok(lib) => {
// panic if feature 1.10 is enabled and the installed library
// is older than 1.10
#[cfg(feature = "libevdev-1-10")]
{
let (major, minor, patch) = parse_version(&lib.version)
.expect("Could not parse version information");
assert_eq!(major, 1, "evdev-rs works only with libevdev 1");
assert!(minor >= 10,
"Feature libevdev-1-10 was enabled, when compiling \
for a system with libevdev version {}.{}.{}",
major,
minor,
patch,
);
}
for path in &lib.include_paths {
println!("cargo:include={}", path.display());
}
return Ok(());
}
Err(e) => eprintln!(
"Couldn't find libevdev from pkgconfig ({:?}), \
compiling it from source...",
e
),
};
}
if !Path::new("libevdev/.git").exists() {
let mut download = Command::new("git");
download.args(&["submodule", "update", "--init", "--depth", "1"]);
run_ignore_error(&mut download)?;
}
let dst = PathBuf::from(env::var_os("OUT_DIR").unwrap());
let src = env::current_dir()?;
let mut cp = Command::new("cp");
cp.arg("-r")
.arg(&src.join("libevdev/"))
.arg(&dst)
.current_dir(&src);
run(&mut cp)?;
println!("cargo:rustc-link-search={}/lib", dst.display());
println!("cargo:root={}", dst.display());
println!("cargo:include={}/include", dst.display());
println!("cargo:rerun-if-changed=libevdev");
println!("cargo:rustc-link-lib=static=evdev");
let cfg = cc::Build::new();
let compiler = cfg.get_compiler();
if !&dst.join("build").exists() {
fs::create_dir(&dst.join("build"))?;
}
let mut autogen = Command::new("sh");
let mut cflags = OsString::new();
for arg in compiler.args() {
cflags.push(arg);
cflags.push(" ");
}
autogen
.env("CC", compiler.path())
.env("CFLAGS", cflags)
.current_dir(&dst.join("build"))
.arg(
dst.join("libevdev/autogen.sh")
.to_str()
.unwrap()
.replace("C:\\", "/c/")
.replace("\\", "/"),
);
if let Ok(h) = env::var("HOST") {
autogen.arg(format!("--host={}", h));
}
if let Ok(t) = env::var("TARGET") {
autogen.arg(format!("--target={}", t));
}
autogen.arg(format!("--prefix={}", sanitize_sh(&dst)));
run(&mut autogen)?;
let mut make = Command::new("make");
make.arg(&format!("-j{}", env::var("NUM_JOBS").unwrap()))
.current_dir(&dst.join("build"));
run(&mut make)?;
let mut install = Command::new("make");
install.arg("install").current_dir(&dst.join("build"));
run(&mut install)?;
Ok(())
}
fn run(cmd: &mut Command) -> std::io::Result<()> {
println!("running: {:?}", cmd);
assert!(cmd.status()?.success());
Ok(())
}
fn run_ignore_error(cmd: &mut Command) -> std::io::Result<()> {
println!("running: {:?}", cmd);
let _ = cmd.status();
Ok(())
}
fn sanitize_sh(path: &Path) -> String {
let path = path.to_str().unwrap().replace("\\", "/");
return change_drive(&path).unwrap_or(path);
fn change_drive(s: &str) -> Option<String> {
let mut ch = s.chars();
let drive = ch.next().unwrap_or('C');
if ch.next() != Some(':') {
return None;
}
if ch.next() != Some('/') {
return None;
}
Some(format!("/{}/{}", drive, &s[drive.len_utf8() + 2..]))
}
}
|
