• using R Under development (unstable) (2013-03-03 r62117)
• using platform: sparc-sun-solaris2.10 (32-bit)
• using session charset: UTF-8
• checking for file ‘RcppXts/DESCRIPTION’ ... OK
• checking extension type ... Package
• this is package ‘RcppXts’ version ‘0.0.4’
• checking package namespace information ... OK
• checking package dependencies ... ERROR
  Package required but not available: ‘Rcpp’
  
  See the information on DESCRIPTION files in the chapter ‘Creating R
  packages’ of the ‘Writing R Extensions’ manual.