cargo是rust的编译与打包工具，可将rust打包成为一个可执行性文件。生成的可执行性文件不能跨系统的大版本，比如在linux7上打包，那么程序无法在linux6上执行。
# cargo new hello_cargo Created binary (application) `hello_cargo` package # cd hello_cargo # ls Cargo.toml src
# ll -a total 24 drwxr-xr-x 4 root root 4096 Jan 15 18:16 . drwxr-xr-x 3 root root 4096 Jan 15 18:16 .. -rw-r--r-- 1 root root 121 Jan 15 18:16 Cargo.toml drwxr-xr-x 6 root root 4096 Jan 15 18:16 .git -rw-r--r-- 1 root root 19 Jan 15 18:16 .gitignore drwxr-xr-x 2 root root 4096 Jan 15 18:16 src
# cat Cargo.toml [package] name = "hello_cargo" version = "0.1.0" authors = ["tanpf <[email protected]>"] edition = "2018" [dependencies]
# cd src # ls main.rs # cat main.rs fn main() { println!("Hello, world!"); }
[root@itoracle src]# cargo build Compiling hello_cargo v0.1.0 (/usr/local/automng/src/rust/test/hello_cargo) Finished dev [unoptimized + debuginfo] target(s) in 3.05s [root@itoracle src]# ll total 4 -rw-r--r-- 1 root root 45 Jan 15 18:16 main.rs
[root@itoracle hello_cargo]# ./target/debug/hello_cargo
Hello, world! [root@itoracle hello_cargo]# cargo run Finished dev [unoptimized + debuginfo] target(s) in 0.01s Running `target/debug/hello_cargo` Hello, world! [root@itoracle hello_cargo]# [root@itoracle hello_cargo]# [root@itoracle hello_cargo]# vim src/main.rs fn main() { println!("Hello, world!"); println!("过年回家的火车票，为啥每次都抢不到呢"); }
如果修改了代码，cargo run会先编译再运行
[root@itoracle hello_cargo]# cargo run Compiling hello_cargo v0.1.0 (/usr/local/automng/src/rust/test/hello_cargo) Finished dev [unoptimized + debuginfo] target(s) in 0.46s Running `target/debug/hello_cargo` Hello, world! 过年回家的火车票，为啥每次都抢不到呢
cargo check进行代码的编译，但不生成可执行文件，速度比cargo build快很多，当代码比较多时，可以先check
[root@itoracle hello_cargo]# cargo check Checking hello_cargo v0.1.0 (/usr/local/automng/src/rust/test/hello_cargo) Finished dev [unoptimized + debuginfo] target(s) in 0.13s