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#[cfg(unix)]
extern crate pkg_config;
#[cfg(windows)]
use std::path::PathBuf;
#[cfg(unix)]
use std::process::Command;
#[cfg(windows)]
fn main() {
let dir = std::env::var("CARGO_MANIFEST_DIR").unwrap();
let mut lib_path = PathBuf::from(&dir).join("Lib");
if cfg!(target_arch = "x86_64") {
lib_path.push("x64")
}
println!("cargo:rustc-link-search=native={}", lib_path.display());
println!("cargo:rustc-link-lib=packet");
println!("cargo:rustc-link-lib=wpcap");
}
#[cfg(unix)]
fn main() {
// First, try pkg_config (available in libpcap 1.9.0+)
if pkg_config::probe_library("libpcap").is_ok() {
return;
}
// Fall back to pcap-config
match Command::new("pcap-config").arg("--libs").output() {
Ok(output) => {
parse_libs_cflags(&output.stdout)
},
_ => (),
}
// on macOS, pcap-config returns /usr/local/lib, but libpcap is actually in /usr/lib
println!("cargo:rustc-link-search=native=/usr/lib");
}
/// Adapted from pkg_config
#[cfg(unix)]
fn parse_libs_cflags(output: &[u8]) {
let words = split_flags(output);
let parts = words
.iter()
.filter(|l| l.len() > 2)
.map(|arg| (&arg[0..2], &arg[2..]))
.collect::<Vec<_>>();
for &(flag, val) in &parts {
match flag {
"-L" => {
println!("cargo:rustc-link-search=native={}", val);
}
"-F" => {
println!("cargo:rustc-link-search=framework={}", val);
}
"-l" => {
println!("cargo:rustc-link-lib={}", val);
}
_ => {}
}
}
}
/// Copied from pkg_config
#[cfg(unix)]
fn split_flags(output: &[u8]) -> Vec<String> {
let mut word = Vec::new();
let mut words = Vec::new();
let mut escaped = false;
for &b in output {
match b {
_ if escaped => {
escaped = false;
word.push(b);
}
b'\\' => escaped = true,
b'\t' | b'\n' | b'\r' | b' ' => {
if !word.is_empty() {
words.push(String::from_utf8(word).unwrap());
word = Vec::new();
}
}
_ => word.push(b),
}
}
if !word.is_empty() {
words.push(String::from_utf8(word).unwrap());
}
words
}
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