The mandatory Gnuastro dependencies are very basic and low-level tools. They all follow the same basic GNU based build system (like that shown in Quick start), so even if you don’t have them, installing them should be pretty straightforward. In this section we explain each program and any specific note that might be necessary in the installation.
|• GNU Scientific Library:||Installing GSL.|
|• CFITSIO:||C interface to the FITS standard.|
|• WCSLIB:||C interface to the WCS standard of FITS.|