編譯的是armv7-a
#!/bin/bash
# ndk環境
export NDK=/home/meng/study/ndk/android-ndk-r17c
export SYSROOT=$NDK/platforms/android-21/arch-arm
export TOOLCHAIN=$NDK/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64
CPU=armv7-a
ISYSROOT=$NDK/sysroot
# 注意
ASM=$ISYSROOT/usr/lib/arm-linux-androideabi
# 要儲存動态庫的目錄,這