if [ $# -ne 3 ]; then

echo "$0 should have 3 parameters: ndk_path, target_arch and sdk_version"

return 1

NDK_PATH=$1

ARCH="$2"

ANDROID_SDK_VERSION=$3

if [ $ANDROID_SDK_VERSION -lt 23 ]; then

echo "$ANDROID_SDK_VERSION should equal or later than 23(Android 6.0)"

CC_VER="4.9"

case $ARCH in

arm)

DEST_CPU="arm"

TOOLCHAIN_NAME="armv7-linux-androideabi"

;;

x86)

DEST_CPU="ia32"

TOOLCHAIN_NAME="i686-linux-android"

;;

x86_64)

DEST_CPU="x64"

TOOLCHAIN_NAME="x86_64-linux-android"

ARCH="x64"

;;

arm64|aarch64)

DEST_CPU="arm64"

TOOLCHAIN_NAME="aarch64-linux-android"

ARCH="arm64"

;;

*)

echo "Unsupported architecture provided: $ARCH"

return 1

;;

HOST_OS="linux"

HOST_ARCH="x86_64"

export CC_host=$(command -v gcc)

export CXX_host=$(command -v g++)

host_gcc_version=$($CC_host --version | grep gcc | awk '{print $NF}')

major=$(echo $host_gcc_version | awk -F . '{print $1}')

minor=$(echo $host_gcc_version | awk -F . '{print $2}')

if [ -z $major ] || [ -z $minor ] || [ $major -lt 6 ] || ( [ $major -eq 6 ] && [ $minor -lt 3 ] ); then

echo "host gcc $host_gcc_version is too old, need gcc 6.3.0"

return 1

SUFFIX="$TOOLCHAIN_NAME$ANDROID_SDK_VERSION"

TOOLCHAIN=$NDK_PATH/toolchains/llvm/prebuilt/$HOST_OS-$HOST_ARCH

export PATH=$TOOLCHAIN/bin:$PATH

export CC=$TOOLCHAIN/bin/$SUFFIX-clang

export CXX=$TOOLCHAIN/bin/$SUFFIX-clang++

GYP_DEFINES="target_arch=$ARCH"

GYP_DEFINES+=" v8_target_arch=$ARCH"

GYP_DEFINES+=" android_target_arch=$ARCH"

GYP_DEFINES+=" host_os=$HOST_OS OS=android"

export GYP_DEFINES

if [ -f "configure" ]; then

./configure \

--dest-cpu=$DEST_CPU \

--dest-os=android \

--without-snapshot \

--openssl-no-asm \

--cross-compiling