I am trying to build some source code on ubuntu 16.04 where one of the classes relies hierarchy_simplify_point_set.h header file, which is part of CGAL's point set package. After following instruction on the installation page, I have installed libcgal-dev and libcgal-qt5-dev via apt-get. The package manager has installed libcgal-dev 4.7 which should include the point set library. However, the particular header file seems to be missing (it seems to have some files from the point set library and not others - I am looking in /usr/include/CGAL). Does anyone know what I am doing wrong?
ps: For good measure, I have already tried uninstalling and reinstalling both the packages, but no luck.
This header has been introduced in CGAL 4.8 while it seems you are using CGAL 4.7.
You can get the latest version of CGAL here. Since the latest versions can be used as a header-only library, simply extract the release archive somewhere and set CGAL_DIR to that location when calling cmake to configure your example and it should work directly.