docs(yocto): add instructions how to extract SDK for RPi Zero 2W

extra2000 · Jul 9, 2023 · 2ce196d · 2ce196d
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diff --git a/.gitignore b/.gitignore
@@ -18,6 +18,7 @@
 /project/yocto/build/tmp*
 /project/yocto/build/*.log
 /project/yocto/build/*.lock
+/project/yocto/build/sdk-*
 /project/yocto/layers/meta-user/recipes-apps/datastruct-cpp/files/build
 
 /project/third-party/*.bsp
diff --git a/docs/yocto/all-targets.md b/docs/yocto/all-targets.md
@@ -82,5 +82,5 @@ To test on specific boards, see the following list:
 
 To clean build:
 ```
-rm -rf project/yocto/build/{sstate-cache,tmp,cache,downloads,tmp-*,*.log}
+rm -rf project/yocto/build/{sstate-cache,tmp,cache,downloads,tmp-*,sdk-*,*.log}
 ```
diff --git a/docs/yocto/specifics/rpizero2-w.md b/docs/yocto/specifics/rpizero2-w.md
@@ -26,6 +26,17 @@ Build:
 bitbake mc:raspberrypi0-2w-64:ros2-image
 ```
 
+To build SDK and extract into `[PROJECT_ROOT]/project/yocto/build/sdk-rpizero2-w` directory:
+```
+bitbake mc:raspberrypi0-2w-64:ros2-image -c populate_sdk
+./tmp-glibc/deploy/sdk/oecore-x86_64-cortexa53-toolchain-nodistro.0.sh -d sdk-rpizero2-w
+```
+
+**NOTE: To use the SDK for cross-compiling, use the following command to `source` SDK environment**:
+```
+source sdk-rpizero2-w/environment-setup-cortexa53-oe-linux
+```
+
 
 ## Flashing to SD Card