use openssl-android to build
armeabi armeabi-v7a mips need build with anroid-19 arm64-v8a mips64 x86_64 need build with android-21
x86_64 rc4_hmac_md5_cipher: error: undefined reference to 'rc4_md5_enc'
build command: ./openssl-android /Users/patyang/workspace/SDK/Android/android-ndk-r10e . 19 x86_64 4.8 ./output/x86_64