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title	date	lastmod	keywords	tags	categories
Rust 笔记	2021-08-29T15:02:13+08:00	2021-08-29T15:02:13+08:00			dev/ops

安装 rust

• 安装 rustup，参考官网

  export RUST_UPDATE_ROOT=https://mirrors.tuna.tsinghua.edu.cn/rustup
  export RUSTUP_DIST_SERVER=https://mirrors.tuna.tsinghua.edu.cn/rustup
  curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
  # 按照提示，一直 default 即可
  

• 配置 rustup、toolchain 和 target 更新源

  cat >> /etc/profile.d/rustup.sh <<-EOF
      export RUSTUP_DIST_SERVER=https://mirrors.tuna.tsinghua.edu.cn/rustup
  EOF
  

• 配置 crate 源

  cat >> ~/.cargo/config <<-EOF
  [source.crates-io]
  replace-with = 'tuna'
  
  [source.tuna]
  registry = "https://mirrors.tuna.tsinghua.edu.cn/git/crates.io-index.git"
  EOF
  

交叉编译

树梅派 Alpine armv7/armhf

• 下载交叉编译工具

  curl -LO https://musl.cc/armv7l-linux-musleabihf-cross.tgz
  tar zxf armv7l-linux-musleabihf-cross.tgz -C /opt/
  export PATH=/opt/armv7l-linux-musleabihf-cross/bin/:$PATH
  

• 配置 target

  rustup target add armv7-unknown-linux-musleabihf
  cat >> ~/.cargo/config <<-EOF
  [target.armv7-unknown-linux-musleabihf]
  linker = "armv7l-linux-musleabihf-ld"
  EOF
  

• 编译

  # 操作系统如果是 armv7，则需指定该 cflag 来禁用 fpu
  export CFLAGS='-mfpu=neon'
  
  export CC=armv7l-linux-musleabihf-gcc
  cargo build --target armv7-unknown-linux-musleabihf --release
  armv7l-linux-musleabihf-strip target/armv7-unknown-linux-musleabihf/release/{目标二进制文件}
  

树梅派 Alpine aarch64

• 下载交叉编译工具

  curl -LO https://musl.cc/aarch64-linux-musl-cross.tgz
  tar zxf aarch64-linux-musl-cross.tgz -C /opt/
  export PATH=/opt/aarch64-linux-musl-cross/bin/:$PATH
  

• 配置 target

  rustup target add aarch64-unknown-linux-musl
  cat >> ~/.cargo/config <<-EOF
  [target.aarch64-unknown-linux-musl]
  linker = "aarch64-linux-musl-ld"
  EOF
  

• 编译

  export CC=aarch64-linux-musl-gcc
  cargo build --target aarch64-unknown-linux-musl --release
  aarch64-linux-musl-strip target/aarch64-unknown-linux-musl/release/{目标二进制文件}