Installing FFTW

Use PuTTY to log in to the server as the root user.
Run the following commands to decompress the FFTW installation package:
```
tar -xvf  fftw-3.3.8.tar.gz
```
Run the following command to switch to the directory containing the decompressed files:
```
cd fftw-3.3.8
```

Run the following command to perform configuration:

./configure --prefix=/path/to/FFTW --enable-shared --enable-static --enable-fma --enable-neon

Run the following commands to perform compilation and installation:
```
make
make install
```

Parent topic: Configuring the Compilation Environment