libcmis @0.5.2_1 fails to build on macOS 10.15.7

[YesNo801]

libcmis fail to build on macOS 10.15.7 - libcmis is package used by libreoffice .

libcmis @0.5.2_1 macOS 10.15.7 (darwin/19.6.0) arch i386 MacPorts 2.7.1 Xcode 12.4 SDK 10.15 MACOSX_DEPLOYMENT_TARGET: 10.15

:info:build   CXX      libcmis_la-xml-utils.lo
:info:build 1 warning generated.
:info:build 1 warning generated.
:info:build In file included from xml-utils.cxx:29:
:info:build In file included from ../../inc/libcmis/xml-utils.hxx:36:
:info:build In file included from /opt/local/include/boost/date_time.hpp:15:
:info:build In file included from /opt/local/include/boost/date_time/local_time/local_time.hpp:11:
:info:build In file included from /opt/local/include/boost/date_time/posix_time/posix_time.hpp:15:
:info:build In file included from /opt/local/include/boost/date_time/posix_time/ptime.hpp:12:
:info:build In file included from /opt/local/include/boost/date_time/posix_time/posix_time_system.hpp:13:
:info:build In file included from /opt/local/include/boost/date_time/posix_time/posix_time_config.hpp:18:
:info:build In file included from /opt/local/include/boost/date_time/gregorian/gregorian_types.hpp:19:
:info:build In file included from /opt/local/include/boost/date_time/gregorian/greg_calendar.hpp:17:
:info:build In file included from /opt/local/include/boost/date_time/gregorian/greg_ymd.hpp:16:
:info:build In file included from /opt/local/include/boost/date_time/gregorian/greg_month.hpp:14:
:info:build In file included from /opt/local/include/boost/shared_ptr.hpp:17:
:info:build In file included from /opt/local/include/boost/smart_ptr/shared_ptr.hpp:28:
:info:build In file included from /opt/local/include/boost/smart_ptr/detail/shared_count.hpp:29:
:info:build In file included from /opt/local/include/boost/smart_ptr/detail/sp_counted_base.hpp:45:
:info:build /opt/local/include/boost/smart_ptr/detail/sp_counted_base_clang.hpp:29:9: warning: '_Atomic' is a C11 extension [-Wc11-extensions]
:info:build typedef _Atomic( boost::int_least32_t ) atomic_int_least32_t;
:info:build         ^
:info:build 1 warning generated.
:info:build   CXXLD    libcmis.la
:info:build   CXXLD    libcmis-0.5.la
:info:build Undefined symbols for architecture x86_64:
:info:build   "boost::gregorian::greg_month::as_short_string() const", referenced from:
:info:build       boost::date_time::month_formatter<boost::gregorian::greg_month, boost::date_time::simple_format<char>, char>::format_month(boost::gregorian::greg_month const&, std::__1::ba
sic_ostream<char, std::__1::char_traits<char> >&) in libcmis.a(libcmis_la-object.o)
:info:build ld: symbol(s) not found for architecture x86_64
:info:build clang: error: linker command failed with exit code 1 (use -v to see invocation)
:info:build make[2]: *** [libcmis-0.5.la] Error 1

[YesNo801]

libcmis build log

[reneeotten (Renee Otten)]

duplicate of 63081