Rust 最小编译程序大小 [英] Rust minimal compiled program size

问题描述

fn main() {
    println!("hello");
}

此程序编译 600 毫秒，生成的二进制文件大小为 600KB.这是为什么?我只是在尝试 Rust，并将其与 C 进行比较.C 编译类似程序的速度会快 10 倍，而二进制输出会小 100 倍.那是为什么?

This program compiles 600 ms and the resulting binary is 600KB in size. Why is that? I am just trying Rust, and comparing it to C. C would compile similar program 10 times faster and the binary output will be 100 times smaller. So why is that?

推荐答案

可执行文件的大小主要是因为 Rust 的标准库默认是静态链接的.尝试使用 rustc -O -C prefer-dynamic 编译，你应该得到一个与 C 版本相当的二进制文件.

The executable size is mostly because rust's standard library is statically linked in by default. Try compiling with rustc -O -C prefer-dynamic and you should get a binary that's comparable to the C version.

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