Compile fails with the following messages (an assert in a boost include file).

#  uname -a

FreeBSD r11-amd64.v6ds.occnc.com 11.2-BETA3 FreeBSD 11.2-BETA3 #0 r334309: Tue May 29 11:48:53 EDT 2018     root@amd64-boot1.v6only.occnc.com:/usr/releng/r11-20180528/obj.amd64.occnc11.amd64/usr/releng/r11-20180528/src/sys/occnc11.amd64  amd64

# make MAKE_JOBS_UNSAFE=yes

[...]

cd /usr/releng/r11-20180528/ports/databases/mysql80-server/work/.build/sql && /usr/bin/c++  -DHAVE_CONFIG_H -DHAVE_LIBEVENT2 -DHAVE_OPENSSL -DMYSQL_SERVER -DRAPIDJSON_NO_SIZETYPEDEFINE -DUNISTR_FROM_CHAR_EXPLICIT=explicit -DUNISTR_FROM_STRING_EXPLICIT=explicit -D_USE_MATH_DEFINES -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/usr/releng/r11-20180528/ports/databases/mysql80-server/work/.build -I/usr/releng/r11-20180528/ports/databases/mysql80-server/work/.build/include -I/usr/releng/r11-20180528/ports/databases/mysql80-server/work/.build/rapid -I/usr/releng/r11-20180528/ports/databases/mysql80-server/work/mysql-8.0.11 -I/usr/releng/r11-20180528/ports/databases/mysql80-server/work/mysql-8.0.11/include -I/usr/releng/r11-20180528/ports/databases/mysql80-server/work/mysql-8.0.11/rapid -I/usr/releng/r11-20180528/ports/databases/mysql80-server/work/.build/libbinlogevents/include -I/usr/releng/r11-20180528/ports/databases/mysql80-server/work/mysql-8.0.11/libbinlogevents/export -isystem /usr/local/include -isystem /usr/local/include/editline -isystem /usr/releng/r11-20180528/ports/databases/mysql80-server/work/mysql-8.0.11/extra/rapidjson/include -I/usr/releng/r11-20180528/ports/databases/mysql80-server/work/mysql-8.0.11/libbinlogevents/include -isystem /usr/releng/r11-20180528/ports/databases/mysql80-server/work/mysql-8.0.11/include/boost_1_66_0/patches -isystem /usr/releng/r11-20180528/ports/databases/mysql80-server/work/mysql-8.0.11/boost/boost_1_66_0 -O2 -pipe -fPIC -fstack-protector -isystem /usr/local/include -fno-strict-aliasing  -isystem /usr/local/include -Wall -Wextra -Wformat-security -Wvla -Wundef -Wmissing-format-attribute -Woverloaded-virtual -Wno-null-conversion -Wno-unused-private-field -Wconditional-uninitialized -Wheader-hygiene -Wnon-virtual-dtor -Wundefined-reinterpret-cast -O2 -pipe -fPIC -fstack-protector -isystem /usr/local/include -fno-strict-aliasing  -isystem /usr/local/include -std=c++11  -DDBUG_OFF -o CMakeFiles/sql_gis.dir/gis/ring_flip_visitor.cc.o -c /usr/releng/r11-20180528/ports/databases/mysql80-server/work/mysql-8.0.11/sql/gis/ring_flip_visitor.cc
In file included from /usr/releng/r11-20180528/ports/databases/mysql80-server/work/mysql-8.0.11/sql/gis/ring_flip_visitor.cc:23:
In file included from /usr/releng/r11-20180528/ports/databases/mysql80-server/work/mysql-8.0.11/sql/gis/ring_flip_visitor.h:26:
In file included from /usr/local/include/boost/geometry.hpp:17:
In file included from /usr/local/include/boost/geometry/geometry.hpp:49:
In file included from /usr/local/include/boost/geometry/strategies/strategies.hpp:58:
In file included from /usr/local/include/boost/geometry/strategies/cartesian/centroid_weighted_length.hpp:25:
In file included from /usr/local/include/boost/geometry/algorithms/detail/distance/point_to_geometry.hpp:42:
In file included from /usr/local/include/boost/geometry/algorithms/covered_by.hpp:24:
In file included from /usr/local/include/boost/geometry/algorithms/detail/covered_by/implementation.hpp:26:
In file included from /usr/local/include/boost/geometry/algorithms/detail/within/implementation.hpp:44:
In file included from /usr/local/include/boost/geometry/algorithms/detail/within/multi_point.hpp:25:
In file included from /usr/local/include/boost/geometry/algorithms/envelope.hpp:22:
In file included from /usr/local/include/boost/geometry/algorithms/detail/envelope/interface.hpp:36:
In file included from /usr/local/include/boost/geometry/strategies/geographic/envelope_segment.hpp:21:
In file included from /usr/local/include/boost/geometry/strategies/geographic/azimuth.hpp:18:
/usr/local/include/boost/geometry/strategies/geographic/parameters.hpp:143:5: error: 
      no matching function for call to 'assertion_failed'
    BOOST_MPL_ASSERT_MSG
    ^~~~~~~~~~~~~~~~~~~~
/usr/local/include/boost/mpl/assert.hpp:435:48: note: expanded from macro
      'BOOST_MPL_ASSERT_MSG'
#define BOOST_MPL_ASSERT_MSG( c, msg, types_ ) \
                                               ^
/usr/local/include/boost/mpl/assert.hpp:429:9: note: expanded from macro '\
BOOST_MPL_ASSERT_MSG_IMPL'
  ...boost::mpl::assertion_failed<(c)>( BOOST_PP_CAT(mpl_assert_arg,counter)::assert_arg() ) \
     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/local/include/boost/mpl/assert.hpp:60:58: note: expanded from macro '\
BOOST_MPL_AUX_ASSERT_CONSTANT'
#   define BOOST_MPL_AUX_ASSERT_CONSTANT(T, expr) enum { expr }
                                                         ^~~~
/usr/local/include/boost/geometry/strategies/geographic/area.hpp:54:41: note: 
      in instantiation of template class
      'boost::geometry::strategy::default_order<gis::Geographic_point>'
      requested here
    std::size_t SeriesOrder = strategy::default_order<FormulaPolicy>::value,
                                        ^
/usr/releng/r11-20180528/ports/databases/mysql80-server/work/mysql-8.0.11/sql/gis/ring_flip_visitor.h:43:36: note: 
      in instantiation of default argument for
      'geographic<gis::Geographic_point>' required here
  boost::geometry::strategy::area::geographic<Geographic_point>
                                   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/local/include/boost/mpl/assert.hpp:83:5: note: candidate function not
      viable: no known conversion from 'boost::mpl::failed
      ************(boost::geometry::strategy::default_order<gis::Geographic_point>::NOT_IMPLEMENTED_FOR_THIS_TYPE::************)(types<gis::Geographic_point>)'
      to 'typename assert<false>::type' (aka 'mpl_::assert<false>') for 1st
      argument
int assertion_failed( typename assert<C>::type );
    ^
In file included from /usr/releng/r11-20180528/ports/databases/mysql80-server/work/mysql-8.0.11/sql/gis/ring_flip_visitor.cc:23:
/usr/releng/r11-20180528/ports/databases/mysql80-server/work/mysql-8.0.11/sql/gis/ring_flip_visitor.h:40:7: warning: 
      'gis::Ring_flip_visitor' has virtual functions but non-virtual destructor
      [-Wnon-virtual-dtor]
class Ring_flip_visitor : public Nop_visitor {
      ^
1 warning and 1 error generated.
*** Error code 1

Stop.
make[4]: stopped in /usr/releng/r11-20180528/ports/databases/mysql80-server/work/.build
*** Error code 1