交叉编译secp256k1 android版本so库

编译脚本，根据android架构进行修改

#!/usr/bin/env bash
set -e

export ANDROID_NDK=/root/zol/zolsvn/projects/kernelmodule/zollimit/android-ndk-r14b
export TOOLCHAIN=$ANDROID_NDK/toolchains
export TOOLTARGET=aarch64-linux-android
export ARCH=arm64-v8a

export CC=$TOOLCHAIN/aarch64-linux-android-4.9/prebuilt/linux-x86_64/bin/$TOOLTARGET-gcc
export LD=$TOOLCHAIN/aarch64-linux-android-4.9/prebuilt/linux-x86_64/bin/$TOOLTARGET-ld
export AR=$TOOLCHAIN/aarch64-linux-android-4.9/prebuilt/linux-x86_64/bin/$TOOLTARGET-ar
export AS=$TOOLCHAIN/aarch64-linux-android-4.9/prebuilt/linux-x86_64/bin/$TOOLTARGET-as
export RANLIB=$TOOLCHAIN/aarch64-linux-android-4.9/prebuilt/linux-x86_64/bin/$TOOLTARGET-ranlib
export STRIP=$TOOLCHAIN/aarch64-linux-android-4.9/prebuilt/linux-x86_64/bin/$TOOLTARGET-strip
export ANDROID_SYSROOT=$ANDROID_NDK/platforms/android-21/arch-arm64
export CPPFLAGS="--sysroot=$ANDROID_SYSROOT"
export CFLAGS="--sysroot=$ANDROID_SYSROOT"
export CXXFLAGS="--sysroot=$ANDROID_SYSROOT"

./autogen.sh

./configure CFLAGS=-fpic --host=$TARGET --enable-experimental=no --enable-module_ecdh=no --enable-module-recovery=no --enable-benchmark=no --enable-shared=yes --enable-exhaustive-tests=no --enable-tests=no

make clean

make

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