Sorry to be MIA during earlier phases. Did my usual thing with 22 combos on Linux. tldr: Looks good. 1 platforms, 5 compilers, 5 c++ versions as applicable - 22 combinations Mint5 - 5.0.0-32-generic #34~18.04.2-Ubuntu SMP Thu Oct 10 10:36:02 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux g++10.1 (2a, 17, 14, 11, 98) g++9.2 (2a, 17, 14, 11, 98) g++8.4 (17, 14, 11, 98) g++7.5 (17, 14, 11, 98) clang6.0.0 (17, 14, 11, 98) - All successfully compile, so pretty solid - c++98 mode dropped from 1683 targets to 1260 (likely boost.math) - c++2a mode dropped from 1793 to 1732 targets - gcc10.1 2a mode 144 warnings (same number as 1.75) -- locale, python, wave - 112 due to auto_ptr ./boost/locale/localization_backend.hpp:109:18: warning: ‘template<class> class std::auto_ptr’ is deprecated [-Wdeprecated-declarations] ./boost/python/detail/is_auto_ptr.hpp:17:40: warning: ‘template<class> class std::auto_ptr’ is deprecated [-Wdeprecated-declarations] - other examples ./boost/wave/grammars/cpp_intlit_grammar.hpp:104:53: warning: top-level comma expression in array subscript is deprecated [-Wcomma-subscript] /usr/include/python2.7/object.h:115:35: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing] ./boost/python/extract.hpp:185:11: warning: ‘*((void*)&<anonymous> +24)’ may be used uninitialized in this function [-Wmaybe-uninitialized]