1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
use std::env;
use std::path::PathBuf;
fn main() {
// 1. Compile CascLib using CMake
let dst = cmake::Config::new("ext/CascLib")
.define("CASC_BUILD_STATIC_LIB", "ON")
.define("CASC_BUILD_SHARED_LIB", "OFF")
.define("CMAKE_POLICY_VERSION_MINIMUM", "3.5")
// Force CascLib to use its own internal zlib instead of looking for a system shared library.
// This ensures our final CLI binary is self-contained and statically linked.
.define("CMAKE_DISABLE_FIND_PACKAGE_ZLIB", "TRUE")
.build();
// 2. Link the compiled library
println!("cargo:rustc-link-search=native={}/lib", dst.display());
println!("cargo:rustc-link-lib=static=casc");
// Link C++ standard library
if cfg!(target_os = "linux") {
println!("cargo:rustc-link-lib=dylib=stdc++");
} else if cfg!(target_os = "macos") {
println!("cargo:rustc-link-lib=dylib=c++");
}
// 3. Generate bindings using bindgen
let bindings = bindgen::Builder::default()
.header("ext/CascLib/src/CascLib.h")
// CascLib uses some Windows types even on Linux (via CascPort.h)
.clang_arg("-Iext/CascLib/src")
// Blocklist IPPORT_RESERVED because it's redefined in multiple headers
.blocklist_item("IPPORT_RESERVED")
// Disable layout tests (size assertions) because they can fail on some
// systems with complex glibc/Clang interactions.
.layout_tests(false)
.parse_callbacks(Box::new(bindgen::CargoCallbacks::new()))
.generate()
.expect("Unable to generate bindings");
// 4. Write the bindings to the $OUT_DIR/bindings.rs file.
let out_path = PathBuf::from(env::var("OUT_DIR").unwrap());
bindings
.write_to_file(out_path.join("bindings.rs"))
.expect("Couldn't write bindings!");
}