Build fails on Ubuntu 20.04

[m-kru]

/home/mkru/workspace/ipbus-software/uhal/python/src/common/cactus_pycohal.cpp: In function ‘void pycohal::wrap_test_functions(pybind11::module_&)’:
/home/mkru/workspace/ipbus-software/uhal/python/src/common/cactus_pycohal.cpp:106:17: error: variable ‘pybind11::module_ lSubModule’ has initializer but incomplete type
  106 |     py::module_ lSubModule = aModule.def_submodule("tests");
      |                 ^~~~~~~~~~
/home/mkru/workspace/ipbus-software/uhal/python/src/common/cactus_pycohal.cpp:106:30: error: invalid use of incomplete type ‘class pybind11::module_’
  106 |     py::module_ lSubModule = aModule.def_submodule("tests");
      |                              ^~~~~~~
In file included from /home/mkru/workspace/ipbus-software/uhal/python/src/common/cactus_pycohal.cpp:22:
include/uhal/pycohal/enums_logging.hpp:6:7: note: forward declaration of ‘class pybind11::module_’
    6 | class module_;
      |       ^~~~~~~
/home/mkru/workspace/ipbus-software/uhal/python/src/common/cactus_pycohal.cpp: In function ‘void pybind11_init__core(pybind11::module&)’:
/home/mkru/workspace/ipbus-software/uhal/python/src/common/cactus_pycohal.cpp:229:23: error: invalid initialization of reference of type ‘pybind11::module_&’ from expression of type ‘pybind11::module’
  229 |   pycohal::wrap_enums(m);
      |                       ^
In file included from /home/mkru/workspace/ipbus-software/uhal/python/src/common/cactus_pycohal.cpp:22:
include/uhal/pycohal/enums_logging.hpp:20:19: note: in passing argument 1 of ‘void pycohal::wrap_enums(pybind11::module_&)’
   20 |   void wrap_enums(pybind11::module_&);
      |                   ^~~~~~~~~~~~~~~~~~
/home/mkru/workspace/ipbus-software/uhal/python/src/common/cactus_pycohal.cpp:232:35: error: invalid initialization of reference of type ‘pybind11::module_&’ from expression of type ‘pybind11::module’
  232 |   pycohal::wrap_logging_functions(m);
      |                                   ^
In file included from /home/mkru/workspace/ipbus-software/uhal/python/src/common/cactus_pycohal.cpp:22:
include/uhal/pycohal/enums_logging.hpp:22:31: note: in passing argument 1 of ‘void pycohal::wrap_logging_functions(pybind11::module_&)’
   22 |   void wrap_logging_functions(pybind11::module_&);
      |                               ^~~~~~~~~~~~~~~~~~
/home/mkru/workspace/ipbus-software/uhal/python/src/common/cactus_pycohal.cpp:235:28: error: invalid initialization of reference of type ‘pybind11::module_&’ from expression of type ‘pybind11::module’
  235 |   pycohal::wrap_exceptions(m);
      |                            ^
In file included from /home/mkru/workspace/ipbus-software/uhal/python/src/common/cactus_pycohal.cpp:23:
include/uhal/pycohal/exceptions.hpp:17:24: note: in passing argument 1 of ‘void pycohal::wrap_exceptions(pybind11::module_&)’
   17 |   void wrap_exceptions(pybind11::module_&);
      |                        ^~~~~~~~~~~~~~~~~~
/home/mkru/workspace/ipbus-software/uhal/python/src/common/cactus_pycohal.cpp:238:32: error: invalid initialization of reference of type ‘pybind11::module_&’ from expression of type ‘pybind11::module’
  238 |   pycohal::wrap_test_functions(m);
      |                                ^
/home/mkru/workspace/ipbus-software/uhal/python/src/common/cactus_pycohal.cpp:104:41: note: in passing argument 1 of ‘void pycohal::wrap_test_functions(pybind11::module_&)’
  104 |   void wrap_test_functions(py::module_& aModule)
      |                            ~~~~~~~~~~~~~^~~~~~~
make[2]: *** [/home/mkru/workspace/ipbus-software/uhal/config/mfRules.mk:87: /home/mkru/workspace/ipbus-software/uhal/python/obj/cactus_pycohal.o] Error 1
make[2]: Leaving directory '/home/mkru/workspace/ipbus-software/uhal/python'
make[1]: *** [Makefile:49: python/.virtual.Makefile] Error 2
make[1]: Leaving directory '/home/mkru/workspace/ipbus-software/uhal'
make: *** [Makefile:58: uhal/.virtual.Makefile] Error 2

pybind installed from Ubuntu official repository.

[tswilliams]

Hi

Which version of pybind is installed? Is the pybind submodule of the ipbus-software repo checked out? The pybind sources should be present under uhal/python/pybind

Cheers,
Tom