From 4c3c1f486ab775eacb1f6455f8468f9be2c3e4f7 Mon Sep 17 00:00:00 2001
From: Narumol Prangnawarat <narumol.prangnawarat@arm.com>
Date: Mon, 17 Feb 2020 13:49:54 +0000
Subject: IVGCVSW-4403 Add standalone backend build steps to
 BuildGuideAndroidNDK

Signed-off-by: Narumol Prangnawarat <narumol.prangnawarat@arm.com>
Change-Id: I339511938ca1356581ffac96baa642d4299d3240
---
 BuildGuideAndroidNDK.md | 51 ++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 50 insertions(+), 1 deletion(-)

diff --git a/BuildGuideAndroidNDK.md b/BuildGuideAndroidNDK.md
index 0f9953f3f1..701dcdb78a 100644
--- a/BuildGuideAndroidNDK.md
+++ b/BuildGuideAndroidNDK.md
@@ -178,9 +178,50 @@ All downloaded or generated files will be saved inside the `~/armnn-devenv` dire
       -DARMCOMPUTENEON=1 -DARMCOMPUTECL=1 -DARMNNREF=1 \
       -DTF_GENERATED_SOURCES=$HOME/armnn-devenv/google/tf_pb/ -DBUILD_TF_PARSER=1 \
       -DPROTOBUF_ROOT=$HOME/armnn-devenv/google/arm64_pb_install/
-	make -j16
 	```
 
+	To include standalone sample dynamic backend tests, add the argument to enable the tests and the dynamic backend path to the CMake command:
+
+    ```bash
+    -DSAMPLE_DYNAMIC_BACKEND=1 \
+    -DDYNAMIC_BACKEND_PATHS=$SAMPLE_DYNAMIC_BACKEND_PATH
+    ```
+    Where $SAMPLE_DYNAMIC_BACKEND_PATH is the path where libArm_SampleDynamic_backend.so library file is pushed
+
+ * Run the build
+    ```bash
+    make -j16
+    ```
+
+#### <a name="buildStandaloneBackend">Build Standalone Sample Dynamic Backend</a>
+* The sample dynamic backend is located in armnn/src/dynamic/sample
+    ```bash
+    mkdir build
+    cd build
+    ```
+
+* Use CMake to configure the build environment, update the following script and run it from the armnn/src/dynamic/sample/build directory to set up the armNN build:
+    ```bash
+    #!/bin/bash
+    CXX=aarch64-linux-android-clang++ \
+    CC=aarch64-linux-android-clang \
+    CXX_FLAGS="-fPIE -fPIC" \
+    cmake \
+    -DCMAKE_SYSTEM_NAME=Android \
+    -DCMAKE_CXX_FLAGS=--std=c++14 \
+    -DCMAKE_EXE_LINKER_FLAGS="-pie -llog" \
+    -DCMAKE_MODULE_LINKER_FLAGS="-llog" \
+    -DBOOST_ROOT=$HOME/armnn-devenv/boost/install \
+    -DBoost_SYSTEM_LIBRARY=$HOME/armnn-devenv/boost/install/lib/libboost_system.a \
+    -DBoost_FILESYSTEM_LIBRARY=$HOME/armnn-devenv/boost/install/lib/libboost_filesystem.a \
+    -DARMNN_PATH=$HOME/armnn-devenv/armnn/build/libarmnn.so ..
+    ```
+
+* Run the build
+    ```bash
+    make
+    ```
+
 #### <a name="runArmNNUnitTests">Run the ArmNN unit tests on an Android device</a>
 
 
@@ -234,6 +275,14 @@ All downloaded or generated files will be saved inside the `~/armnn-devenv` dire
 	adb push -p ~/armnn-devenv/armnn/build/src/backends/dynamic/reference/Arm_CpuRef_backend.so /data/local/tmp/src/backends/dynamic/reference/
 	```
 
+	If the standalone sample dynamic tests are enabled, also push libArm_SampleDynamic_backend.so library file to the folder specified as $SAMPLE_DYNAMIC_BACKEND_PATH when ArmNN is built.
+	This is the example when $SAMPLE_DYNAMIC_BACKEND_PATH is specified as /data/local/tmp/dynamic/sample/:
+
+	```bash
+	adb shell mkdir -p /data/local/tmp/dynamic/sample/
+	adb push -p ${WORKING_DIR}/armnn/src/dynamic/sample/build/libArm_SampleDynamic_backend.so /data/local/tmp/dynamic/sample/
+	```
+
 * Run ArmNN unit tests:
 
 	```bash
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