PGI compiler issues

[XL64]

Issue description

When building the tests with PGI Compilers some errors are raised.
To be able to build them I needed to allow more recursion :

  if (CMAKE_CXX_COMPILER_ID·STREQUAL·PGI)
    target_compile_options(${target_name} PRIVATE -Wc,--pending_instantiations=0)
  endif()

I also needed to comment out some test because they raised more complex errors: test_smart_ptr.cpp and test_virtual_functions.cpp

I am not enough C++ expert to fix them:

cd /appli_RD/LACOSTE/DNG/diva-nextgen/build/pybind11-prefix/src/pybind11-build/tests && /data_local/sw/pgi/20.04/linuxpower/20.4/bin/pgc++  -DPYBIND11_TEST_EIGEN -Dpybind11_tests_EXPORTS -I/appli_RD/LACOSTE/DNG/diva-nextgen/build/pybind11-prefix/src/pybind11/include -I/data_local/sw/anaconda3/include/python3.7m -I/appli_RD/LACOSTE/OMEGA/cmakesuperbuild/build-gnu/eigen/src/eigen_project  -O2 -s -DNDEBUG -fPIC   -std=c++14 -Wc,--pending_instantiations=0 -o CMakeFiles/pybind11_tests.dir/test_smart_ptr.cpp.o -c /appli_RD/LACOSTE/DNG/diva-nextgen/build/pybind11-prefix/src/pybind11/tests/test_smart_ptr.cpp
At end of source: warning: routine is both "inline" and "noinline"

PGC++-S-0000-Internal compiler error. getsname: illegal stype   76807  (/usr/lib/gcc/ppc64le-redhat-linux/4.8.5/../../../../include/c++/4.8.5/tuple)
PGC++-S-0000-Internal compiler error. getsname: illegal stype   76808  (/usr/lib/gcc/ppc64le-redhat-linux/4.8.5/../../../../include/c++/4.8.5/tuple: 169)
PGC++-S-0000-Internal compiler error. getsname: illegal stype   76809  (/usr/lib/gcc/ppc64le-redhat-linux/4.8.5/../../../../include/c++/4.8.5/tuple: 172)
PGC++-S-0000-Internal compiler error. getsname: illegal stype   76810  (/usr/lib/gcc/ppc64le-redhat-linux/4.8.5/../../../../include/c++/4.8.5/tuple: 142)
PGC++-S-0000-Internal compiler error. getsname: illegal stype   76811  (/usr/lib/gcc/ppc64le-redhat-linux/4.8.5/../../../../include/c++/4.8.5/tuple)
PGC++-S-0000-Internal compiler error. getsname: illegal stype   76812  (/usr/lib/gcc/ppc64le-redhat-linux/4.8.5/../../../../include/c++/4.8.5/tuple: 142)
PGC++-S-0000-Internal compiler error. getsname: illegal stype   76813  (/usr/lib/gcc/ppc64le-redhat-linux/4.8.5/../../../../include/c++/4.8.5/tuple)
PGC++-S-0000-Internal compiler error. getsname: illegal stype   76814  (/usr/lib/gcc/ppc64le-redhat-linux/4.8.5/../../../../include/c++/4.8.5/tuple: 241)
PGC++-S-0000-Internal compiler error. getsname: illegal stype   76815  (/usr/lib/gcc/ppc64le-redhat-linux/4.8.5/../../../../include/c++/4.8.5/tuple: 244)
PGC++-S-0000-Internal compiler error. getsname: illegal stype   76816  (/usr/lib/gcc/ppc64le-redhat-linux/4.8.5/../../../../include/c++/4.8.5/tuple: 264)
PGC++-S-0000-Internal compiler error. getsname: illegal stype   76817  (/usr/lib/gcc/ppc64le-redhat-linux/4.8.5/../../../../include/c++/4.8.5/tuple)
PGC++-S-0000-Internal compiler error. getsname: illegal stype   76818  (/usr/lib/gcc/ppc64le-redhat-linux/4.8.5/../../../../include/c++/4.8.5/tuple: 264)
PGC++-S-0000-Internal compiler error. getsname: illegal stype   76819  (/usr/lib/gcc/ppc64le-redhat-linux/4.8.5/../../../../include/c++/4.8.5/tuple)
PGC++-S-0000-Internal compiler error. getsname: illegal stype   76820  (/usr/lib/gcc/ppc64le-redhat-linux/4.8.5/../../../../include/c++/4.8.5/tuple: 540)
PGC++-S-0000-Internal compiler error. getsname: illegal stype   76821  (/usr/lib/gcc/ppc64le-redhat-linux/4.8.5/../../../../include/c++/4.8.5/tuple)
PGC++-S-0000-Internal compiler error. getsname: illegal stype   76822  (/usr/lib/gcc/ppc64le-redhat-linux/4.8.5/../../../../include/c++/4.8.5/tuple: 540)
PGC++-S-0000-Internal compiler error. getsname: illegal stype   81567  (/usr/lib/gcc/ppc64le-redhat-linux/4.8.5/../../../../include/c++/4.8.5/tuple: 102)
PGC++-S-0000-Internal compiler error. getsname: illegal stype   81568  (/usr/lib/gcc/ppc64le-redhat-linux/4.8.5/../../../../include/c++/4.8.5/tuple: 767)
PGC++-S-0000-Internal compiler error. getsname: illegal stype   81569  (/usr/lib/gcc/ppc64le-redhat-linux/4.8.5/../../../../include/c++/4.8.5/tuple: 750)
PGC++-S-0000-Internal compiler error. getsname: illegal stype   81570  (/usr/lib/gcc/ppc64le-redhat-linux/4.8.5/../../../../include/c++/4.8.5/tuple: 760)
PGC++-S-0000-Internal compiler error. getsname: illegal stype   81571  (/usr/lib/gcc/ppc64le-redhat-linux/4.8.5/../../../../include/c++/4.8.5/tuple: 745)
PGC++-S-0000-Internal compiler error. getsname: illegal stype   81574  (/usr/lib/gcc/ppc64le-redhat-linux/4.8.5/../../../../include/c++/4.8.5/bits/move.h: 77)

and

[  7%] Building CXX object tests/CMakeFiles/pybind11_tests.dir/test_virtual_functions.cpp.o
cd /appli_RD/LACOSTE/DNG/diva-nextgen/build/pybind11-prefix/src/pybind11-build/tests && /data_local/sw/pgi/20.04/linuxpower/20.4/bin/pgc++  -DPYBIND11_TEST_EIGEN -Dpybind11_tests_EXPORTS -I/appli_RD/LACOSTE/DNG/diva-nextgen/build/pybind11-prefix/src/pybind11/include -I/data_local/sw/anaconda3/include/python3.7m -I/appli_RD/LACOSTE/OMEGA/cmakesuperbuild/build-gnu/eigen/src/eigen_project  -O2 -s -DNDEBUG -fPIC   -std=c++14 -Wc,--pending_instantiations=0 -o CMakeFiles/pybind11_tests.dir/test_virtual_functions.cpp.o -c /appli_RD/LACOSTE/DNG/diva-nextgen/build/pybind11-prefix/src/pybind11/tests/test_virtual_functions.cpp
At end of source: warning: routine is both "inline" and "noinline"

"/appli_RD/LACOSTE/DNG/diva-nextgen/build/pybind11-prefix/src/pybind11/include/
          pybind11/cast.h", line 1707: error: function
          "NonCopyable::NonCopyable(const NonCopyable &)" (declared at line 104
          of
          "/appli_RD/LACOSTE/DNG/diva-nextgen/build/pybind11-prefix/src/pybind1
          1/tests/test_virtual_functions.cpp") cannot be referenced -- it is a
          deleted function
      return cast_op<T>(load_type<T>(handle));
             ^
          detected during:
            instantiation of "T pybind11::cast<T,<unnamed>>(const
                      pybind11::handle &) [with T=NonCopyable, <unnamed>=0]" at
                      line 1759
            instantiation of
                      "pybind11::detail::enable_if_t<pybind11::detail::negation
                      <pybind11::detail::any_of<pybind11::detail::move_always<T
                      , void>, pybind11::detail::move_if_unreferenced<T,
                      void>>>::value, T> pybind11::cast<T>(pybind11::object &&)
                      [with T=NonCopyable]" at line 1789
            instantiation of "pybind11::detail::enable_if_t<<expression>, T>
                      pybind11::detail::cast_safe<T>(pybind11::object &&) [with
                      T=NonCopyable]" at line 142 of
                      "/appli_RD/LACOSTE/DNG/diva-nextgen/build/pybind11-prefix
                      /src/pybind11/tests/test_virtual_functions.cpp"

## Reproducible example code

Use PGI compiler to build the code.

[wjakob]

The PGI compiler is not supported (but Pybind11 works on a wide range of C++ compilers, so there is no fundamental reason why it shouldn't work there as well.). Sounds like you should file a bug request with them.

[henryiii]

From what we are discovering: #include <exception> may be needed, and PGI really doesn't like the old GCC libstdc++ (such as 4.8). On CentOS 8 it compiles without a problem.