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build-android-arm64-v8a.sh
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build-android-arm64-v8a.sh
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#!/usr/bin/env bash
set -ex
dir=build-android-arm64-v8a
mkdir -p $dir
cd $dir
# Note from https://github.com/Tencent/ncnn/wiki/how-to-build#build-for-android
# (optional) remove the hardcoded debug flag in Android NDK android-ndk
# issue: https://github.com/android/ndk/issues/243
#
# open $ANDROID_NDK/build/cmake/android.toolchain.cmake for ndk < r23
# or $ANDROID_NDK/build/cmake/android-legacy.toolchain.cmake for ndk >= r23
#
# delete "-g" line
#
# list(APPEND ANDROID_COMPILER_FLAGS
# -g
# -DANDROID
if [ -z $ANDROID_NDK ]; then
ANDROID_NDK=/ceph-fj/fangjun/software/android-sdk/ndk/21.0.6113669
# or use
# ANDROID_NDK=/ceph-fj/fangjun/software/android-ndk
#
# Inside the $ANDROID_NDK directory, you can find a binary ndk-build
# and some other files like the file "build/cmake/android.toolchain.cmake"
if [ ! -d $ANDROID_NDK ]; then
# For macOS, I have installed Android Studio, select the menu
# Tools -> SDK manager -> Android SDK
# and set "Android SDK location" to /Users/fangjun/software/my-android
ANDROID_NDK=/Users/fangjun/software/my-android/ndk/22.1.7171670
fi
fi
if [ ! -d $ANDROID_NDK ]; then
echo Please set the environment variable ANDROID_NDK before you run this script
exit 1
fi
echo "ANDROID_NDK: $ANDROID_NDK"
sleep 1
cmake -DCMAKE_TOOLCHAIN_FILE="$ANDROID_NDK/build/cmake/android.toolchain.cmake" \
-DCMAKE_BUILD_TYPE=Release \
-DBUILD_SHARED_LIBS=ON \
-DSHERPA_NCNN_ENABLE_PORTAUDIO=OFF \
-DSHERPA_NCNN_ENABLE_BINARY=OFF \
-DSHERPA_NCNN_ENABLE_TEST=OFF \
-DSHERPA_NCNN_ENABLE_C_API=OFF \
-DSHERPA_NCNN_ENABLE_GENERATE_INT8_SCALE_TABLE=OFF \
-DCMAKE_INSTALL_PREFIX=./install \
-DANDROID_ABI="arm64-v8a" \
-DANDROID_PLATFORM=android-21 ..
make VERBOSE=1 -j4
make install/strip
# Note: If you set SHERPA_NCNN_ENABLE_BINARY=ON, it will
# generate a binary sherpa-ncnn in $dir/install/bin, which can be run on Android
# with the following commands:
#
# 1. Copy sherpa-ncnn and its dependencies to Android
#
# cd build-android-arm64-v8a/install/lib
# adb push ./lib*.so /data/local/tmp
# cd ../bin
# adb push ./sherpa-ncnn /data/local/tmp
#
# 2. Login into Android
#
# adb shell
# cd /data/local/tmp
# ./sherpa-ncnn
#
# which shows the following error log:
#
# CANNOT LINK EXECUTABLE "./sherpa-ncnn": library "libsherpa-ncnn-core.so" not found: needed by main executable
#
# Please run:
#
# export LD_LIBRARY_PATH=$PWD:$LD_LIBRARY_PATH
#
# and then you can run:
#
# ./sherpa-ncnn
#
# It should show the help message of sherpa-ncnn.