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[  2%] Building CXX object lib/CMakeFiles/gnuradio-lfast.dir/costas2_impl.cc.o
/opt/gr-lfast/lib/costas2_impl.cc: In constructor ‘gr::lfast::costas2_impl::costas2_impl(float, int, bool)’:
/opt/gr-lfast/lib/costas2_impl.cc:84:89: error: ‘_1’ was not declared in this scope
   84 |         set_msg_handler(pmt::mp("msgin"), boost::bind(&costas2_impl::handleMsgIn, this, _1) );
      |                                                                                         ^~
/opt/gr-lfast/lib/costas2_impl.cc:84:89: note: suggested alternatives:
In file included from /usr/include/boost/mpl/aux_/include_preprocessed.hpp:37,
                 from /usr/include/boost/mpl/placeholders.hpp:43,
                 from /usr/include/boost/iterator/iterator_categories.hpp:16,
                 from /usr/include/boost/iterator/iterator_facade.hpp:13,
                 from /usr/include/boost/filesystem/path.hpp:29,
                 from /usr/include/boost/filesystem.hpp:16,
                 from /usr/include/gnuradio/logger.h:34,
                 from /usr/include/gnuradio/basic_block.h:16,
                 from /usr/include/gnuradio/block.h:15,
                 from /usr/include/gnuradio/sync_block.h:15,
                 from /opt/gr-lfast/lib/../include/lfast/costas2.h:26,
                 from /opt/gr-lfast/lib/costas2_impl.h:24,
                 from /opt/gr-lfast/lib/costas2_impl.cc:27:
/usr/include/boost/mpl/aux_/preprocessed/gcc/placeholders.hpp:29:16: note:   ‘mpl_::_1’
   29 | typedef arg<1> _1;
      |                ^~
In file included from /usr/include/boost/system/error_code.hpp:19,
                 from /usr/include/boost/filesystem/path_traits.hpp:22,
                 from /usr/include/boost/filesystem/path.hpp:26,
                 from /usr/include/boost/filesystem.hpp:16,
                 from /usr/include/gnuradio/logger.h:34,
                 from /usr/include/gnuradio/basic_block.h:16,
                 from /usr/include/gnuradio/block.h:15,
                 from /usr/include/gnuradio/sync_block.h:15,
                 from /opt/gr-lfast/lib/../include/lfast/costas2.h:26,
                 from /opt/gr-lfast/lib/costas2_impl.h:24,
                 from /opt/gr-lfast/lib/costas2_impl.cc:27:
/usr/include/c++/11/functional:225:34: note:   ‘std::placeholders::_1’
  225 |     extern const _Placeholder<1> _1;
      |                                  ^~
In file included from /usr/include/boost/mpl/aux_/include_preprocessed.hpp:37,
                 from /usr/include/boost/mpl/placeholders.hpp:43,
                 from /usr/include/boost/iterator/iterator_categories.hpp:16,
                 from /usr/include/boost/iterator/iterator_facade.hpp:13,
                 from /usr/include/boost/filesystem/path.hpp:29,
                 from /usr/include/boost/filesystem.hpp:16,
                 from /usr/include/gnuradio/logger.h:34,
                 from /usr/include/gnuradio/basic_block.h:16,
                 from /usr/include/gnuradio/block.h:15,
                 from /usr/include/gnuradio/sync_block.h:15,
                 from /opt/gr-lfast/lib/../include/lfast/costas2.h:26,
                 from /opt/gr-lfast/lib/costas2_impl.h:24,
                 from /opt/gr-lfast/lib/costas2_impl.cc:27:
/usr/include/boost/mpl/aux_/preprocessed/gcc/placeholders.hpp:29:16: note:   ‘mpl_::_1’
   29 | typedef arg<1> _1;
      |                ^~
In file included from /usr/include/boost/bind/bind.hpp:2356,
                 from /usr/include/boost/thread/detail/thread.hpp:33,
                 from /usr/include/boost/thread/thread_only.hpp:22,
                 from /usr/include/boost/thread/thread.hpp:12,
                 from /usr/include/boost/thread.hpp:13,
                 from /usr/include/gnuradio/logger.h:36,
                 from /usr/include/gnuradio/basic_block.h:16,
                 from /usr/include/gnuradio/block.h:15,
                 from /usr/include/gnuradio/sync_block.h:15,
                 from /opt/gr-lfast/lib/../include/lfast/costas2.h:26,
                 from /opt/gr-lfast/lib/costas2_impl.h:24,
                 from /opt/gr-lfast/lib/costas2_impl.cc:27:
/usr/include/boost/bind/placeholders.hpp:46:38: note:   ‘boost::placeholders::_1’
   46 | BOOST_STATIC_CONSTEXPR boost::arg<1> _1;
      |                                      ^~
In file included from /usr/include/boost/mpl/aux_/include_preprocessed.hpp:37,
                 from /usr/include/boost/mpl/placeholders.hpp:43,
                 from /usr/include/boost/iterator/iterator_categories.hpp:16,
                 from /usr/include/boost/iterator/iterator_facade.hpp:13,
                 from /usr/include/boost/filesystem/path.hpp:29,
                 from /usr/include/boost/filesystem.hpp:16,
                 from /usr/include/gnuradio/logger.h:34,
                 from /usr/include/gnuradio/basic_block.h:16,
                 from /usr/include/gnuradio/block.h:15,
                 from /usr/include/gnuradio/sync_block.h:15,
                 from /opt/gr-lfast/lib/../include/lfast/costas2.h:26,
                 from /opt/gr-lfast/lib/costas2_impl.h:24,
                 from /opt/gr-lfast/lib/costas2_impl.cc:27:
/usr/include/boost/mpl/aux_/preprocessed/gcc/placeholders.hpp:29:16: note:   ‘mpl_::_1’
   29 | typedef arg<1> _1;
      |                ^~
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make[1]: *** [CMakeFiles/Makefile2:236: lib/CMakeFiles/gnuradio-lfast.dir/all] Error 2
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