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Description
As reported by @virtualritz in #1852, using clang_arg("-x c++")
causes bindgen
's generate
to return an Err
result.
As a workaround, .clang_arg("-xc++")
can be used.
From this build.rs
,
use std::path::PathBuf;
fn main() {
let bindings = bindgen::Builder::default()
.header("wrapper.hpp")
.clang_arg("-x c++") // does not work
.generate()
.expect("Couldn't make bindings!");
let out_path = PathBuf::from(std::env::var("OUT_DIR").unwrap());
bindings.write_to_file(out_path.join("bindings.rs"))
.expect("Couldn't write bindings!");
}
RUST_BACKTRACE=1 cargo build -vv
shows :
error: language not recognized: ' c++', err: true
warning: '-x c++': 'linker' input unused [-Wunused-command-line-argument], err: false
thread 'main' panicked at 'Couldn't make bindings!: ()', build.rs:4:20
stack backtrace:
0: <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt
1: core::fmt::write
2: std::io::Write::write_fmt
3: std::panicking::default_hook::{{closure}}
4: std::panicking::default_hook
5: std::panicking::rust_panic_with_hook
6: rust_begin_unwind
7: core::panicking::panic_fmt
8: core::result::unwrap_failed
9: core::result::Result<T,E>::expect
10: build_script_build::main
11: std::rt::lang_start::{{closure}}
12: std::rt::lang_start_internal
13: std::rt::lang_start
14: main
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
tpoisonooo
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