Replace buck with cmake in docs (#3739) (#3778)

Summary:
Pull Request resolved: #3739

Per: https://docs.google.com/spreadsheets/d/1PoJt7P9qMkFSaMmS9f9j8dVcTFhOmNHotQYpwBySydI/edit#gid=0

We are also deprecating buck in docs from Gasoonjia

Reviewed By: Gasoonjia

Differential Revision: D57795491

fbshipit-source-id: dc18ac923e390cfc28fc7e46b234ac338c60061d
(cherry picked from commit 0b34dc5)

Co-authored-by: Max Ren <maxren@meta.com>

docs/source/tutorial-xnnpack-delegate-lowering.md

@@ -152,7 +152,7 @@ cmake \
     -DEXECUTORCH_BUILD_EXTENSION_MODULE=ON \
     -DEXECUTORCH_BUILD_XNNPACK=ON \
     -DEXECUTORCH_BUILD_EXTENSION_DATA_LOADER=ON \
-    -DEXECUTORCH_ENABLE_LOGGING=1 \
+    -DEXECUTORCH_ENABLE_LOGGING=ON \
     -DPYTHON_EXECUTABLE=python \
     -Bcmake-out .
 ```
@@ -169,15 +169,5 @@ Now you should be able to find the executable built at `./cmake-out/backends/xnn
 ./cmake-out/backends/xnnpack/xnn_executor_runner --model_path=./mv2_xnnpack_q8.pte
 ```
 
-
-## Running the XNNPACK Model with Buck
-Alternatively, you can use `buck2` to run the `.pte` file with XNNPACK delegate instructions in it on your host platform. You can follow the instructions here to install [buck2](getting-started-setup.md#Build-&-Run). You can now run it with the prebuilt `xnn_executor_runner` provided in the examples. This will run the model on some sample inputs.
-
-```bash
-buck2 run examples/xnnpack:xnn_executor_runner -- --model_path ./mv2_xnnpack_fp32.pte
-# or to run the quantized variant
-buck2 run examples/xnnpack:xnn_executor_runner -- --model_path ./mv2_xnnpack_q8.pte
-```
-
 ## Building and Linking with the XNNPACK Backend
-You can build the XNNPACK backend [BUCK target](https://github.com/pytorch/executorch/blob/main/backends/xnnpack/targets.bzl#L54) and [CMake target](https://github.com/pytorch/executorch/blob/main/backends/xnnpack/CMakeLists.txt#L83), and link it with your application binary such as an Android or iOS application. For more information on this you may take a look at this [resource](demo-apps-android.md) next.
+You can build the XNNPACK backend [CMake target](https://github.com/pytorch/executorch/blob/main/backends/xnnpack/CMakeLists.txt#L83), and link it with your application binary such as an Android or iOS application. For more information on this you may take a look at this [resource](demo-apps-android.md) next.

examples/xnnpack/README.md

@@ -25,10 +25,38 @@ The following command will produce a floating-point XNNPACK delegated model `mv2
 python3 -m examples.xnnpack.aot_compiler --model_name="mv2" --delegate
 ```
 
-Once we have the model binary (pte) file, then let's run it with ExecuTorch runtime using the `xnn_executor_runner`.
+Once we have the model binary (pte) file, then let's run it with ExecuTorch runtime using the `xnn_executor_runner`. With cmake, you first configure your cmake with the following:
 
 ```bash
-buck2 run examples/xnnpack:xnn_executor_runner -- --model_path ./mv2_xnnpack_fp32.pte
+# cd to the root of executorch repo
+cd executorch
+
+# Get a clean cmake-out directory
+rm- -rf cmake-out
+mkdir cmake-out
+
+# Configure cmake
+cmake \
+    -DCMAKE_INSTALL_PREFIX=cmake-out \
+    -DCMAKE_BUILD_TYPE=Release \
+    -DEXECUTORCH_BUILD_EXTENSION_MODULE=ON \
+    -DEXECUTORCH_BUILD_XNNPACK=ON \
+    -DEXECUTORCH_BUILD_EXTENSION_DATA_LOADER=ON \
+    -DEXECUTORCH_ENABLE_LOGGING=ON \
+    -DPYTHON_EXECUTABLE=python \
+    -Bcmake-out .
+```
+
+Then you can build the runtime components with
+
+```bash
+cmake --build cmake-out -j9 --target install --config Release
+```
+
+Now finally you should be able to run this model with the following command
+
+```bash
+./cmake-out/backends/xnnpack/xnn_executor_runner --model_path ./mv2_xnnpack_fp32.pte
 ```
 
 ## Quantization
@@ -38,11 +66,7 @@ Here we will discuss quantizing a model suitable for XNNPACK delegation using XN
 
 Though it is typical to run this quantized mode via XNNPACK delegate, we want to highlight that this is just another quantization flavor, and we can run this quantized model without necessarily using XNNPACK delegate, but only using standard quantization operators.
 
-A shared library to register the out variants of the quantized operators (e.g., `quantized_decomposed::add.out`) into EXIR is required. To generate this library, run the following command if using `buck2`:
-```bash
-buck2 build //kernels/quantized:aot_lib --show-output
-```
-Or if on cmake, follow the instructions in `test_quantize.sh` to build it, the default path is `cmake-out/kernels/quantized/libquantized_ops_lib.so`.
+A shared library to register the out variants of the quantized operators (e.g., `quantized_decomposed::add.out`) into EXIR is required. On cmake, follow the instructions in `test_quantize.sh` to build it, the default path is `cmake-out/kernels/quantized/libquantized_ops_lib.so`.
 
 Then you can generate a XNNPACK quantized model with the following command by passing the path to the shared library into the script `quantization/example.py`:
 ```bash
@@ -55,12 +79,37 @@ You can find more valid quantized example models by running:
 python3 -m examples.xnnpack.quantization.example --help
 ```
 
-A quantized model can be run via `executor_runner`:
+## Running the XNNPACK Model with CMake
+After exporting the XNNPACK Delegated model, we can now try running it with example inputs using CMake. We can build and use the xnn_executor_runner, which is a sample wrapper for the ExecuTorch Runtime and XNNPACK Backend. We first begin by configuring the CMake build like such:
 ```bash
-buck2 run examples/portable/executor_runner:executor_runner -- --model_path ./mv2_quantized.pte
+# cd to the root of executorch repo
+cd executorch
+
+# Get a clean cmake-out directory
+rm- -rf cmake-out
+mkdir cmake-out
+
+# Configure cmake
+cmake \
+    -DCMAKE_INSTALL_PREFIX=cmake-out \
+    -DCMAKE_BUILD_TYPE=Release \
+    -DEXECUTORCH_BUILD_EXTENSION_MODULE=ON \
+    -DEXECUTORCH_BUILD_XNNPACK=ON \
+    -DEXECUTORCH_BUILD_EXTENSION_DATA_LOADER=ON \
+    -DEXECUTORCH_ENABLE_LOGGING=ON \
+    -DPYTHON_EXECUTABLE=python \
+    -Bcmake-out .
 ```
-Please note that running a quantized model will require the presence of various quantized/dequantize operators in the [quantized kernel lib](../../kernels/quantized).
+Then you can build the runtime componenets with
 
+```bash
+cmake --build cmake-out -j9 --target install --config Release
+```
+
+Now you should be able to find the executable built at `./cmake-out/backends/xnnpack/xnn_executor_runner` you can run the executable with the model you generated as such
+```bash
+./cmake-out/backends/xnnpack/xnn_executor_runner --model_path=./mv2_quantized.pte
+```
 
 ## Delegating a Quantized Model
 
@@ -69,9 +118,3 @@ The following command will produce a XNNPACK quantized and delegated model `mv2_
 ```bash
 python3 -m examples.xnnpack.aot_compiler --model_name "mv2" --quantize --delegate
 ```
-
-Once we have the model binary (pte) file, then let's run it with ExecuTorch runtime using the `xnn_executor_runner`.
-
-```bash
-buck2 run examples/xnnpack:xnn_executor_runner -- --model_path ./mv2_xnnpack_q8.pte
-```