BiVarEst : gammafit : gammaLik: no visible global function definition
  for 'dgamma'
BiVarEst : gammafit : gammaLik: no visible global function definition
  for 'pgamma'
BiVarEst : LiBiCop: no visible global function definition for
  'dweibull'
BiVarEst : LiBiCop: no visible global function definition for
  'pweibull'
BiVarEst : LiBiCop: no visible global function definition for 'dlnorm'
BiVarEst : LiBiCop: no visible global function definition for 'plnorm'
BiVarEst : LiBiCop: no visible global function definition for 'dnorm'
BiVarEst : LiBiCop: no visible global function definition for 'pnorm'
BiVarEst : LiBiCop: no visible global function definition for 'dgamma'
BiVarEst : LiBiCop: no visible global function definition for 'pgamma'
dibivar: no visible global function definition for 'pweibull'
dibivar: no visible global function definition for 'dweibull'
dibivar: no visible global function definition for 'pgamma'
dibivar: no visible global function definition for 'dgamma'
dibivar: no visible global function definition for 'plnorm'
dibivar: no visible global function definition for 'dlnorm'
dibivar: no visible global function definition for 'pnorm'
dibivar: no visible global function definition for 'dnorm'
gammafit : gammaLik: no visible global function definition for 'dgamma'
gammafit : gammaLik: no visible global function definition for 'pgamma'
pibivar: no visible global function definition for 'pweibull'
pibivar: no visible global function definition for 'pgamma'
pibivar: no visible global function definition for 'plnorm'
pibivar: no visible global function definition for 'pnorm'
subivar: no visible global function definition for 'pweibull'
subivar: no visible global function definition for 'pgamma'
subivar: no visible global function definition for 'plnorm'
subivar: no visible global function definition for 'pnorm'
Undefined global functions or variables:
  dgamma dlnorm dnorm dweibull pgamma plnorm pnorm pweibull
Consider adding
  importFrom("stats", "dgamma", "dlnorm", "dnorm", "dweibull", "pgamma",
             "plnorm", "pnorm", "pweibull")
to your NAMESPACE file.