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build.rs
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build.rs
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extern crate bindgen;
use std::env;
use std::path::PathBuf;
fn find_vpp_lib_dir() -> String {
/*
* In the future there's more cleverness possibly to be added.
* For now this will do.
*/
let path = "/usr/lib/x86_64-linux-gnu/".to_string();
path
}
fn git_version() -> String {
use std::process::Command;
let describe_output = Command::new("git")
.arg("describe")
.arg("--all")
.arg("--long")
.output()
.unwrap();
let mut describe = String::from_utf8_lossy(&describe_output.stdout).to_string();
describe.pop();
describe
}
fn main() {
let vpp_lib_dir = match env::var("VPP_LIB_DIR") {
Ok(val) => val,
Err(_e) => find_vpp_lib_dir(),
};
if !std::path::Path::new(&format!("{}/libvppapiclient.so", &vpp_lib_dir)).exists() {
panic!("Can not find libvppapiclient.so at {}, please install python3-vpp-api or define VPP_LIB_DIR accordingly", vpp_lib_dir)
}
let flags = format!("cargo:rustc-flags=-L{} -lvppapiclient", &vpp_lib_dir);
// Tell cargo to tell rustc to link the VPP client library
println!("{}", flags);
println!("cargo:rustc-env=GIT_VERSION=version {}", &git_version());
let bindings = bindgen::Builder::default()
.header("src/shmem_wrapper.h")
.generate()
.expect("Unable to generate bindings");
let out_path = PathBuf::from(env::var("OUT_DIR").unwrap());
let out_file_name = out_path.join("bindings.rs");
bindings
.write_to_file(out_file_name.clone())
.expect("Couldn't write bindings!");
}