1 - installing
seems to provide the required files
2 - Using ubuntu 17.10 aardvark, I could ignore cmake telling
"Could NOT find GEOTIFF (missing: GEOTIFF_INCLUDE_DIR) "
and build after copying the content of /usr/include/geotiff (.h and .inc files) into the
src folder of photolayer_pi
3 - However opencpn
07:19:06 CET: PlugInManager: Loading PlugIn: /usr/local/lib/opencpn/libPhotoLayer_pi.so
07:19:06 CET: Erreur : /usr/local/lib/opencpn/libPhotoLayer_pi.so: undefined symbol: XTIFFOpen
07:19:06 CET: PlugInManager: Cannot load library: /usr/local/lib/opencpn/libPhotoLayer_pi.so
which did not occur when building on my arm64 board.
This is getting in over my head