[#453] Document how to make cross-compilation work with buildroot

doc/cross-compile/buildroot.md

@@ -1,36 +1,39 @@
-
-## How to make cross-compilation work with buildroot
+# How to make cross-compilation work with buildroot
 
 1. install the build dependencies on your host PC, like: cmake, g++, clang...
-
-2. install the `rust` toolchain: `curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh`
-
-3. add the arm64 target for rust: `rustup target add aarch64-unknown-linux-gnu`
-
-4. modify the arm64 target name to suit your cross-compilation tool, need to create this file `~/.cargo/config.toml`, add:
+2. install the `rust` toolchain:
+
+   ```console
+   curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
    ```
+
+3. add the arm64 target for Rust: `rustup target add aarch64-unknown-linux-gnu`
+4. modify the arm64 target name to suit your cross-compilation tool, need to
+   create this file `~/.cargo/config.toml`, add:
+   ```console
    [target.aarch64-unknown-linux-gnu]
    linker = "aarch64-buildroot-linux-gnu-gcc"
    ```
-   "aarch64-buildroot-linux-gnu-gcc" is your real cross-compilation tool name
-
-
-6. source your cross-compilation buildroot environment: `source /to/your/environment-setup`, this file should be in your buildroot folder
-
-7. add the buildroot sysroot on host PC environment: `export BINDGEN_EXTRA_CLANG_ARGS="--sysroot=/to/your/sysroot"`
-
-8. Change to the iceoryx2 directory
-    ```console
-    cd iceoryx2
-    ```
-9 ... 
-   
-9. cmake -S . -B build -DBUILD_EXAMPLES=ON -DCMAKE_INSTALL_PREFIX=../_OUTPUT -DRUST_TARGET_TRIPLET='aarch64-unknown-linux-gnu'
-
-10. cd build
-
-11. make -j8
-
-12. make install
+   "aarch64-buildroot-linux-GNU-gcc" is your real cross-compilation tool name
+5. source your cross-compilation buildroot environment:
+   `source /to/your/environment-setup`, this file should be in your buildroot
+   folder
+
+6. add the buildroot sysroot on host PC environment:
+   ```console
+   export BINDGEN_EXTRA_CLANG_ARGS="--sysroot=/to/your/sysroot"
+   ```
+7. Change to the iceoryx2 directory
+
+   ```console
+   cd iceoryx2
+   ```
+
+8. cmake -S . -B build -DBUILD_EXAMPLES=ON -DCMAKE_INSTALL_PREFIX=../\_OUTPUT
+   -DRUST_TARGET_TRIPLET='aarch64-unknown-linux-GNU'
+
+9. make -j8
+
+10. make install
 
 Finally, you can get the arm64 libs, include files in the `_OUTPUT` folder.