cmake does not check for libtiff

[Mettbrot]

leading to compile error:

[ 10%] Building CXX object CMakeFiles/pHash.dir/src/pHash.cpp.o
In file included from /home/vm/Documents/pHash/src/pHash.h:59,
                 from /home/vm/Documents/pHash/src/pHash.cpp:25:
/home/vm/Documents/pHash/third-party/CImg/CImg.h:476:10: fatal error: tiffio.h: No such file or directory
  476 | #include "tiffio.h"
      |          ^~~~~~~~~~
compilation terminated.
make[2]: *** [CMakeFiles/pHash.dir/build.make:63: CMakeFiles/pHash.dir/src/pHash.cpp.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:110: CMakeFiles/pHash.dir/all] Error 2
make: *** [Makefile:152: all] Error 2

[bigntallmike]

It also doesn't check for libpng or libjpeg.