Description
Hi, I am trying to build a binary written in rust static linked with a c++ library. I follow the instructions in official documentation, but end up with an error：
undefined reference to `__dso_handle'
Following is a simple example:
// test.cpp
#include <vector>
const std::vector<int> ids = {2, 3, 4};
extern "C" {
extern int get_id(int idx);
}
int get_id(int idx) {
return ids[idx];
}
// main.rs
#[link(name = "test")]
extern "C" {
pub fn get_id(idx: usize) -> usize;
}
fn main() {
unsafe {
println!("id at {} is {}", 2, get_id(2));
}
}
I build the static library using following command:
g++ -std=c++0x -c test.cpp -o test.o
ar rcs libtest.a test.o
And build the binary using following command:
LIBRARY_PATH=./ rustc main.rs -lstdc++ --target=x86_64-unknown-linux-musl
It failed with error:
note: ./libtest.a(test.o): In function
__static_initialization_and_destruction_0(int, int)': test.cpp:(.text+0xa2): undefined reference to__dso_handle'
/usr/local/lib/rustlib/x86_64-unknown-linux-musl/lib/libstd-8102e29f.rlib(std-8102e29f.0.o):(.data._rust_extern_with_linkage___dso_handle+0x0): undefined reference to `__dso_handle'
I can build the binary successfully when linking dynamically. Am I missing any thing here? Any help is appreciated.