update

content/post/rust.md

@@ -0,0 +1,88 @@
+---
+title: "Rust 笔记"
+date: 2021-08-29T15:02:13+08:00
+lastmod: 2021-08-29T15:02:13+08:00
+keywords: []
+tags: []
+categories: ["dev/ops"]
+---
+
+# 安装 rust
+- 安装 rustup，参考官网
+    ```bash
+    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
+    ```bash
+    cat >> /etc/profile.d/rustup.sh <<-EOF
+        export RUSTUP_DIST_SERVER=https://mirrors.tuna.tsinghua.edu.cn/rustup
+    EOF
+    ```
+
+- 配置 crate 源
+    ```bash
+    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
+    ```bash
+    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/:$PATH
+    ```
+
+- 配置 target
+    ```bash
+    rustup target add armv7-unknown-linux-musleabihf
+    cat >> ~/.cargo/config <<-EOF
+    [target.armv7-unknown-linux-musleabihf]
+    linker = "armv7l-linux-musleabihf-ld"
+    EOF
+    ```
+
+- 编译
+    ```bash
+    # 操作系统如果是 armv7，则需指定该 cflag 来禁用 fpu
+    export CFLAGS='-mfpu=neon'
+
+    export CC=armv7l-linux-musleabihf-gcc
+    cargo build --target armv7-unknown-linux-musleabihf --release
+    armv7l-linux-musleabihf-strip target/armv7-unknown-linux-musleabihf/release/{目标二进制文件}
+    ```
+
+## 树梅派 Alpine aarch64
+- 下载交叉编译工具
+    ```bash
+    curl -LO https://musl.cc/aarch64-linux-musl-cross.tgz
+    tar zxf aarch64-linux-musl-cross.tgz -C /opt/
+    export PATH=/opt/aarch64-linux-musl-cross/bin/:$PATH
+    ```
+
+- 配置 target
+    ```bash
+    rustup target add aarch64-unknown-linux-musl
+    cat >> ~/.cargo/config <<-EOF
+    [target.aarch64-unknown-linux-musl]
+    linker = "aarch64-linux-musl-ld"
+    EOF
+    ```
+
+- 编译
+    ```bash
+    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}
+    ```
+