• using R version 4.0.2 (2020-06-22)
• using platform: x86_64-apple-darwin17.0 (64-bit)
• using session charset: UTF-8
• checking for file ‘cairoDevice/DESCRIPTION’ ... OK
• this is package ‘cairoDevice’ version ‘2.28.2’
• checking package namespace information ... OK
• checking package dependencies ... OK
• checking if this is a source package ... OK
• checking if there is a namespace ... OK
• checking for executable files ... OK
• checking for hidden files and directories ... OK
• checking for portable file names ... OK
• checking for sufficient/correct file permissions ... OK
• checking whether package ‘cairoDevice’ can be installed ... [7s/10s] OK
• checking installed package size ... NOTE
    installed size is 8.2Mb
    sub-directories of 1Mb or more:
      libs 8.1Mb
• checking package directory ... OK
• checking DESCRIPTION meta-information ... OK
• checking top-level files ... OK
• checking for left-over files ... OK
• checking index information ... OK
• checking package subdirectories ... OK
• checking R files for non-ASCII characters ... OK
• checking R files for syntax errors ... OK
• checking whether the package can be loaded ... OK
• checking whether the package can be loaded with stated dependencies ... OK
• checking whether the package can be unloaded cleanly ... OK
• checking whether the namespace can be loaded with stated dependencies ... OK
• checking whether the namespace can be unloaded cleanly ... OK
• checking loading without being on the library search path ... OK
• checking dependencies in R code ... OK
• checking S3 generic/method consistency ... OK
• checking replacement functions ... OK
• checking foreign function calls ... OK
• checking R code for possible problems ... [2s/3s] NOTE
  File ‘cairoDevice/R/zzz.R’:
    .onLoad calls:
      message("R session is headless; GTK+ not initialized.")
  
  Package startup functions should use ‘packageStartupMessage’ to
    generate messages.
  See section ‘Good practice’ in '?.onAttach'.
• checking Rd files ... OK
• checking Rd metadata ... OK
• checking Rd cross-references ... OK
• checking for missing documentation entries ... OK
• checking for code/documentation mismatches ... OK
• checking Rd \usage sections ... OK
• checking Rd contents ... OK
• checking for unstated dependencies in examples ... OK
• checking line endings in shell scripts ... OK
• checking line endings in C/C++/Fortran sources/headers ... OK
• checking line endings in Makefiles ... OK
• checking compilation flags in Makevars ... OK
• checking for GNU extensions in Makefiles ... OK
• checking for portable use of $(BLAS_LIBS) and $(LAPACK_LIBS) ... OK
• checking use of PKG_*FLAGS in Makefiles ... OK
• checking compiled code ... NOTE
  File ‘cairoDevice/libs/cairoDevice.so’:
    Found non-API call to R: ‘R_CStackLimit’
  
  Compiled code should not call non-API entry points in R.
  
  See ‘Writing portable packages’ in the ‘Writing R Extensions’ manual.
• checking examples ... [1s/3s] OK
• checking PDF version of manual ... OK
• DONE
  Status: 3 NOTEs
  * pre-conf. environment: (PKG_CFLAGS=, PKG_CPPFLAGS=, PKG_LIBS=)