Hi Claudio, Alas, Ubunutu 14.04 only has CGAL4.2 in Launchpad so that probably won't work without compiling CGAL from scratch I would guess. Best wishes, Philipp -----Original Message----- From: attacc [mailto:claudio.attaccalite@gmail.com] Sent: 23 November 2016 12:32 To: graph-tool@skewed.de Subject: Re: [graph-tool] graph_triangulation.cc:55:61: fatal error: CGAL/Periodic_3_Delaunay_triangulation_traits_3.h: No such file or directory Dear all I add the same problem on Fedora 20, with CGAL 4.3. In order to solve the problem remove CGAL 4.3 and install 4.9 version, then graph-tool compiles regards Claudio -- View this message in context: http://main-discussion-list-for-the-graph-tool-project.982480.n3.nabble.com/ graph-triangulation-cc-55-61-fatal-error-CGAL-Periodic-3-Delaunay-triangulat ion-traits-3-h-No-such-fy-tp4026810p4026863.html Sent from the Main discussion list for the graph-tool project mailing list archive at Nabble.com.