Rust Code:

#[no_mangle] use std::thread; pub extern fn process() { let handles: Vec<_> = (0..10).map(|_| { thread::spawn(|| { let mut _x = 0; for _ in (0..5_000_001) { _x += 1 } }) }).collect(); for h in handles { h.join().ok().expect("Could not join a thread!"); } }

Cargo.toml:

[package] name = "embed" version = "0.1.0" authors = ["hustlibraco "] [lib] name = "embed" crate-type = ["dylib"]

编译得到target/release/libembed.so共享库，然后我在此目录下面新建了一个python文件：

from ctypes import cdll lib = cdll.LoadLibrary("target/release/libembed.so") lib.process() print("done!")

执行报错：

-bash-4.2# python invoke.py Traceback (most recent call last): File "invoke.py", line 5, in  lib.process() File "/usr/lib64/python2.7/ctypes/__init__.py", line 373, in __getattr__ func = self.__getitem__(name) File "/usr/lib64/python2.7/ctypes/__init__.py", line 378, in __getitem__ func = self._FuncPtr((name_or_ordinal, self)) AttributeError: target/release/libembed.so: undefined symbol: process

这是Rust官方教程给的例子，为什么我这里会执行出错呢？