Found the following significant warnings:
  ../inst/include/CImg.h:51715:100: warning: ‘uint16’ is deprecated [-Wdeprecated-declarations]
  ../inst/include/CImg.h:51715:100: warning: ‘uint32’ is deprecated [-Wdeprecated-declarations]
  ../inst/include/CImg.h:51739:102: warning: ‘uint16’ is deprecated [-Wdeprecated-declarations]
  ../inst/include/CImg.h:51739:102: warning: ‘uint32’ is deprecated [-Wdeprecated-declarations]
  ../inst/include/CImg.h:51762:107: warning: ‘uint16’ is deprecated [-Wdeprecated-declarations]
  ../inst/include/CImg.h:51762:107: warning: ‘uint32’ is deprecated [-Wdeprecated-declarations]
  ../inst/include/CImg.h:51787:109: warning: ‘uint16’ is deprecated [-Wdeprecated-declarations]
  ../inst/include/CImg.h:51787:109: warning: ‘uint32’ is deprecated [-Wdeprecated-declarations]
  ../inst/include/CImg.h:51765:16: warning: ‘uint32’ is deprecated [-Wdeprecated-declarations]
  ../inst/include/CImg.h:51765:21: warning: ‘uint32’ is deprecated [-Wdeprecated-declarations]
  ../inst/include/CImg.h:51765:37: warning: ‘uint32’ is deprecated [-Wdeprecated-declarations]
  ../inst/include/CImg.h:51768:18: warning: ‘uint32’ is deprecated [-Wdeprecated-declarations]
  ../inst/include/CImg.h:51790:16: warning: ‘uint32’ is deprecated [-Wdeprecated-declarations]
  ../inst/include/CImg.h:51790:21: warning: ‘uint32’ is deprecated [-Wdeprecated-declarations]
  ../inst/include/CImg.h:51790:37: warning: ‘uint32’ is deprecated [-Wdeprecated-declarations]
  ../inst/include/CImg.h:51794:20: warning: ‘uint32’ is deprecated [-Wdeprecated-declarations]
  ../inst/include/CImg.h:51815:14: warning: ‘uint16’ is deprecated [-Wdeprecated-declarations]
  ../inst/include/CImg.h:51815:35: warning: ‘uint16’ is deprecated [-Wdeprecated-declarations]
  ../inst/include/CImg.h:51815:54: warning: ‘uint16’ is deprecated [-Wdeprecated-declarations]
  ../inst/include/CImg.h:51816:14: warning: ‘uint16’ is deprecated [-Wdeprecated-declarations]
  ../inst/include/CImg.h:51817:14: warning: ‘uint32’ is deprecated [-Wdeprecated-declarations]
  ../inst/include/CImg.h:51817:22: warning: ‘uint32’ is deprecated [-Wdeprecated-declarations]
  ../inst/include/CImg.h:51856:23: warning: ‘uint32’ is deprecated [-Wdeprecated-declarations]
  ../inst/include/CImg.h:51856:39: warning: ‘uint32’ is deprecated [-Wdeprecated-declarations]
  ../inst/include/CImg.h:51856:66: warning: ‘uint32’ is deprecated [-Wdeprecated-declarations]
  ../inst/include/CImg.h:51862:64: warning: ‘uint32’ is deprecated [-Wdeprecated-declarations]
  ../inst/include/CImg.h:51888:16: warning: ‘uint16’ is deprecated [-Wdeprecated-declarations]
  ../inst/include/CImg.h:51891:18: warning: ‘uint32’ is deprecated [-Wdeprecated-declarations]
  ../inst/include/CImg.h:51891:26: warning: ‘uint32’ is deprecated [-Wdeprecated-declarations]
  ../inst/include/CImg.h:55892:14: warning: ‘uint32’ is deprecated [-Wdeprecated-declarations]
  ../inst/include/CImg.h:55892:30: warning: ‘uint32’ is deprecated [-Wdeprecated-declarations]
  ../inst/include/CImg.h:55893:14: warning: ‘uint16’ is deprecated [-Wdeprecated-declarations]
  ../inst/include/CImg.h:55893:31: warning: ‘uint16’ is deprecated [-Wdeprecated-declarations]
  ../inst/include/CImg.h:55893:50: warning: ‘uint16’ is deprecated [-Wdeprecated-declarations]
  ../inst/include/CImg.h:55930:18: warning: ‘uint32’ is deprecated [-Wdeprecated-declarations]
See ‘/home/hornik/tmp/R.check/r-patched-gcc/Work/PKGS/imager.Rcheck/00install.out’ for details.