pcapplusplus-sys

编译PcapPlusPlus并使其库和头文件可用。

将为依赖项的build.rs提供两个环境变量

• DEP_PCAPPLUSPLUS_INCLUDE包含PcapPlusPlus头文件的路径
• DEP_PCAPPLUSPLUS_LIB包含编译后的PcapPlusPlus库的路径

要在build.rs中使用PcapPlusPlus与cxx，请使用以下内容

let mut cpp = cxx_build::bridge("src/bridge.rs");

// Set include path for PcapPlusPlus
let pcpp_include = env::var_os("DEP_PCAPPLUSPLUS_INCLUDE")
    .expect("Environment variable DEP_PCAPPLUSPLUS_INCLUDE should have been set");
cpp.include(pcpp_include);

// ...

还需要链接到PcapPlusPlus库以及可能还需要链接到libpcap

// Link to PcapPlusPlus libraries
let pcpp_lib = env::var("DEP_PCAPPLUSPLUS_LIB")
    .expect("Environment variable DEP_PCAPPLUSPLUS_LIB should have been set");
println!("cargo:rustc-link-search=native={}", pcpp_lib);
println!("cargo:rustc-link-lib=static=Common++");
println!("cargo:rustc-link-lib=static=Packet++");
println!("cargo:rustc-link-lib=static=Pcap++");

// Link to libpcap
println!("cargo:rustc-link-lib=dylib=pcap");