Siril depends on a number of libraries, which all should be available in your operating system if it is recent enough. See a list of packages names for Debian here. Mandatory dependencies are:

  • gtk+-3.4 (Graphical user interface library)
  • cfitsio (FITS images support)
  • fftw (Discrete Fourier Transform library)
  • gsl (The GNU Scientific Library)
  • libconfig++ (Structured configuration files support)