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use std::env;
fn main() {
// The script doesn't depend on our code
println!("cargo:rerun-if-changed=build.rs");
if std::env::var("DOCS_RS").is_ok() {
// docs.rs doesn't have clang, so skip building this. The
// documentation will still work since it doesn't need to link.
//
// This is independent of the `docsrs` cfg; we never want to try
// invoking clang on docs.rs, whether we're the crate being
// documented currently, or a dependency of another crate.
return;
}
// Note: Intentionally compile without ARC, we want to handle memory
// management ourselves.
let mut builder = cc::Build::new();
builder.flag("-xobjective-c");
builder.flag("-fobjc-exceptions");
builder.file("src/try_catch.m");
// Set Objective-C runtime. We assume the compiler is Clang, if it isn't,
// this is probably going to fail anyways, since we're using newer
// runtimes than GCC supports.
//
// TODO: ObjFW via. `-fobjc-runtime=objfw-VERSION`. Clang defaults to 0.8
if env::var_os("CARGO_FEATURE_GNUSTEP_2_1").is_some() {
builder.flag("-fobjc-runtime=gnustep-2.1");
} else if env::var_os("CARGO_FEATURE_GNUSTEP_2_0").is_some() {
builder.flag("-fobjc-runtime=gnustep-2.0");
} else if env::var_os("CARGO_FEATURE_GNUSTEP_1_9").is_some() {
builder.flag("-fobjc-runtime=gnustep-1.9");
} else if env::var_os("CARGO_FEATURE_GNUSTEP_1_8").is_some() {
builder.flag("-fobjc-runtime=gnustep-1.8");
} else if env::var_os("CARGO_FEATURE_GNUSTEP_1_7").is_some() {
builder.flag("-fobjc-runtime=gnustep-1.7");
} else {
// Let the compiler choose a sensible default
};
println!("cargo:rerun-if-changed=src/try_catch.m");
builder.compile("libobjc2_exception_helper_0_1.a");
}