#52082: flann 1.8.4 fails to build with gcc6 ----------------------+-------------------------------- Reporter: gnwiii@… | Owner: macports-tickets@… Type: defect | Status: new Priority: Normal | Milestone: Component: ports | Version: 2.3.4 Keywords: gcc6 | Port: flann ----------------------+-------------------------------- {{{ :info:build /opt/local/var/macports/build/_opt_local_var_macports_sources_svn.macports.org_trunk_dports_science_flann/flann/work/flann-1.8.4-src/src/cpp/flann/algorithms/kdtree_index.h:666:39: error: call of overloaded 'abs(flann::KDTreeIndex<flann::L2<float>

::ElementType)' is ambiguous }}}

[https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=822717 Debian bug #822717] reports that the bug was fixed in flann-1.8.5 and provides a patch for 1.8.4. [https://github.com/mariusmuja/flann/commit/3645f0c30a47267e56e5acdecfc7bac2b... patch on github] {{{ ElementType span = abs(point[i]-leaf_point[i]); }}} needs to {{{#include <cmath>}}} and: {{{ ElementType span = std::abs(point[i]-leaf_point[i]); }}} The macports build succeeds when I apply these changes to the interrupted build. -- Ticket URL: <https://trac.macports.org/ticket/52082> MacPorts <https://www.macports.org/> Ports system for OS X