Found the following significant warnings:
  Rd warning: Cramer_vonMises.Rd:19: missing link ‘Copula-class’
  Rd warning: Cramer_vonMises.Rd:35: missing link ‘Copula-class’
  Rd warning: Cylcop.Rd:95: missing link ‘Copula-class’
  Rd warning: Cylcop.Rd:77: missing link ‘Copula-class’
  Rd warning: Cylcop.Rd:98: missing link ‘Copula-class’
  Rd warning: Cylcop.Rd:106: missing link ‘Copula-class’
  Rd warning: ccylcop.Rd:34: missing link ‘Copula-class’
  Rd warning: ccylcop.Rd:56: missing link ‘Copula-class’
  Rd warning: cyl_copula-class.Rd:9: missing link ‘Copula-class’
  Rd warning: cyl_rect_combine-class.Rd:9: missing link ‘Copula-class’
  Rd warning: cyl_rect_combine-class.Rd:13: missing link ‘Copula-class’
  Rd warning: cyl_rect_combine-class.Rd:45: missing link ‘Copula-class’
  Rd warning: cyl_rect_combine-class.Rd:50: missing link ‘Copula-class’
  Rd warning: cyl_rect_combine-class.Rd:69: missing link ‘Copula-class’
  Rd warning: cyl_rect_combine.Rd:16: missing link ‘Copula-class’
  Rd warning: cyl_rect_combine.Rd:21: missing link ‘Copula-class’
  Rd warning: cyl_rot_combine-class.Rd:10: missing link ‘Copula-class’
  Rd warning: cyl_rot_combine-class.Rd:31: missing link ‘Copula-class’
  Rd warning: cyl_rot_combine-class.Rd:45: missing link ‘Copula-class’
  Rd warning: cyl_rot_combine.Rd:10: missing link ‘Copula-class’
  Rd warning: fit_cylcop_ml.Rd:87: missing link ‘Copula-class’
  Rd warning: fit_cylcop_ml.Rd:88: missing link ‘fitCopula’
  Rd warning: full2half_circ.Rd:11: missing link ‘circular’
  Rd warning: half2full_circ.Rd:11: missing link ‘circular’
  Rd warning: joint.Rd:22: missing link ‘Copula-class’
  Rd warning: numerical_conditional_cop.Rd:15: missing link ‘Copula-class’
  Rd warning: numerical_inv_conditional_cop.Rd:15: missing link ‘Copula-class’
  Rd warning: plot_cop_surf.Rd:16: missing link ‘Copula-class’
  Rd warning: wasserstein.Rd:18: missing link ‘Copula-class’
  Rd warning: wasserstein.Rd:21: missing link ‘Copula-class’
See ‘/home/hornik/tmp/R.check/r-patched-gcc/Work/PKGS/cylcop.Rcheck/00install.out’ for details.