ci(workflows): 更新交叉编译配置并移除不支持的目标

- 移除了不再需要的交叉编译帮助文档
- 在 CI 工作流中添加了 gcc-multilib 依赖项
- 安装了多种架构的交叉编译工具链
- 配置了 Cargo 的目标链接器以支持跨平台构建- 移除了对不支持 std 的 riscv32i-unknown-none-elf 目标的构建步骤
- 将交叉编译配置写入 .cargo/config.toml 文件以便复用

Author: DataEraserC

.cargo/config.toml

@@ -0,0 +1,11 @@
+[target.i686-unknown-linux-gnu]
+linker = "i686-linux-gnu-gcc"
+
+[target.aarch64-unknown-linux-gnu]
+linker = "aarch64-linux-gnu-gcc"
+
+[target.armv7-unknown-linux-gnueabihf]
+linker = "arm-linux-gnueabihf-gcc"
+
+[target.riscv64gc-unknown-linux-gnu]
+linker = "riscv64-linux-gnu-gcc"

.github/workflows/cross_compile_help.md

@@ -124,7 +124,6 @@ jobs:
           - armv7-unknown-linux-gnueabihf
           # RISC-V architectures - supported ones
           - riscv64gc-unknown-linux-gnu
-          - riscv32i-unknown-none-elf
     steps:
       - uses: actions/checkout@v4
       - name: Install Rust
@@ -134,11 +133,25 @@ jobs:
       - name: Install dependencies (Linux)
         run: |
           sudo apt-get update
-          sudo apt-get install -y libsqlite3-dev
+          sudo apt-get install -y libsqlite3-dev gcc-multilib
       - name: Install cross-compilation tools
         run: |
           sudo apt-get install -y gcc-arm-linux-gnueabihf gcc-aarch64-linux-gnu gcc-i686-linux-gnu \
             gcc-riscv64-linux-gnu
+      - name: Configure cargo for cross-compilation
+        run: |
+          mkdir -p .cargo
+          echo '[target.i686-unknown-linux-gnu]' > .cargo/config.toml
+          echo 'linker = "i686-linux-gnu-gcc"' >> .cargo/config.toml
+          echo '' >> .cargo/config.toml
+          echo '[target.aarch64-unknown-linux-gnu]' >> .cargo/config.toml
+          echo 'linker = "aarch64-linux-gnu-gcc"' >> .cargo/config.toml
+          echo '' >> .cargo/config.toml
+          echo '[target.armv7-unknown-linux-gnueabihf]' >> .cargo/config.toml
+          echo 'linker = "arm-linux-gnueabihf-gcc"' >> .cargo/config.toml
+          echo '' >> .cargo/config.toml
+          echo '[target.riscv64gc-unknown-linux-gnu]' >> .cargo/config.toml
+          echo 'linker = "riscv64-linux-gnu-gcc"' >> .cargo/config.toml
       - name: Build release binary
         run: |
           cargo build --target ${{ matrix.target }} --release --bin file_classification_cli --verbose
@@ -245,7 +258,6 @@ jobs:
             artifacts/file_classification_cli-aarch64-unknown-linux-gnu/file_classification_cli
             artifacts/file_classification_cli-armv7-unknown-linux-gnueabihf/file_classification_cli
             artifacts/file_classification_cli-riscv64gc-unknown-linux-gnu/file_classification_cli
-            artifacts/file_classification_cli-riscv32i-unknown-none-elf/file_classification_cli
             artifacts/file_classification_cli-x86_64-pc-windows-msvc/file_classification_cli.exe
             artifacts/file_classification_cli-i686-pc-windows-msvc/file_classification_cli.exe
             artifacts/file_classification_cli-aarch64-pc-windows-msvc/file_classification_cli.exe