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extern crate gcc;
extern crate pkg_config;
use std::env;
use std::io;
use std::path::PathBuf;
use std::process::Command;
fn main() {
if env::var("CARGO_FEATURE_BUILD").is_err() {
return;
}
fetch().unwrap();
build().unwrap();
println!("cargo:rustc-link-search=native={}", output().to_string_lossy());
}
fn output() -> PathBuf {
PathBuf::from(env::var("OUT_DIR").unwrap())
}
fn source() -> PathBuf {
output().join("hidapi")
}
fn fetch() -> io::Result<()> {
Command::new("git")
.current_dir(&output())
.arg("clone")
.arg("https://github.com/signal11/hidapi.git")
.arg("hidapi")
.status()?;
Ok(())
}
#[cfg(target_os = "linux")]
fn build() -> io::Result<()> {
let mut config = gcc::Config::new();
config.file(source().join("libusb/hid.c"));
config.include(source().join("hidapi"));
for path in pkg_config::find_library("libusb-1.0").unwrap().include_paths {
config.include(path.to_str().unwrap());
}
config.compile("libhidapi-libusb.a");
Ok(())
}
#[cfg(target_os = "macos")]
fn build() -> io::Result<()> {
let mut config = gcc::Config::new();
config.file(source().join("libusb/hid.c"));
config.include(source().join("hidapi"));
for path in pkg_config::find_library("libusb-1.0").unwrap().include_paths {
config.include(path.to_str().unwrap());
}
config.compile("libhidapi.a");
Ok(())
}
#[cfg(target_os = "windows")]
fn build() -> io::Result<()> {
let mut config = gcc::Config::new();
config.file(source().join("windows/hid.c"));
config.include(source().join("hidapi"));
config.compile("libhidapi.a");
Ok(())
}
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