Build libev git clone https://github.com/enki/libev.git cd libev ./configure --host=arm-linux-gnueabi DESTDIR=/tmp/rtty_install make install Build rtty git clone --recursive https://github.com/zhaojh329/rtty.git cd rtty cmake . -DCMAKE_C_COMPILER=arm-linux-gnueabi-gcc -DCMAKE_FIND_ROOT_PATH=/tmp/rtty_install DESTDIR=/tmp/rtty_install make install Copy these files to your device's corresponding directory /tmp/rtty_install/ └── usr └── local ├── bin │ └── rtty └── lib ├── libev.so -> libev.so.4.0.0 ├── libev.so.4 -> libev.so.4.0.0 ├── libev.so.4.0.0