Support Windows pybind11 generation

[j-rivero]

Desired behavior

Current code disable the python generation on Windows. If we enable the compilation, the following problem arises:

  Angle.cc
  AxisAlignedBox.cc
  Capsule.cc
C:\vcpkg\installed\x64-windows\include\pybind11\detail/type_caster_base.h(482,26): error C2027: use of undefined type '_frame' (compiling source file C:\J\workspace\ign_math-pr-win\ws\gz-math\src\python_pybind11\src\Capsule.cc) [C:\J\workspace\ign_math-pr-win\ws\build\gz-math7\test\FAKE_INSTALL-prefix\src\FAKE_INSTALL-build\src\python_pybind11\math7.vcxproj]
C:\Program Files\Python311\include\pytypedefs.h(22): message : see declaration of '_frame' (compiling source file C:\J\workspace\ign_math-pr-win\ws\gz-math\src\python_pybind11\src\Capsule.cc) [C:\J\workspace\ign_math-pr-win\ws\build\gz-math7\test\FAKE_INSTALL-prefix\src\FAKE_INSTALL-build\src\python_pybind11\math7.vcxproj]
C:\vcpkg\installed\x64-windows\include\pybind11\detail/type_caster_base.h(482,26): error C2027: use of undefined type '_frame' (compiling source file C:\J\workspace\ign_math-pr-win\ws\gz-math\src\python_pybind11\src\_gz_math_pybind11.cc) [C:\J\workspace\ign_math-pr-win\ws\build\gz-math7\test\FAKE_INSTALL-prefix\src\FAKE_INSTALL-build\src\python_pybind11\math7.vcxproj]
C:\Program Files\Python311\include\pytypedefs.h(22): message : see declaration of '_frame' (compiling source file C:\J\workspace\ign_math-pr-win\ws\gz-math\src\python_pybind11\src\_gz_math_pybind11.cc) [C:\J\workspace\ign_math-pr-win\ws\build\gz-math7\test\FAKE_INSTALL-prefix\src\FAKE_INSTALL-build\src\python_pybind11\math7.vcxproj]
C:\vcpkg\installed\x64-windows\include\pybind11\detail/type_caster_base.h(482,26): error C2027: use of undefined type '_frame' (compiling source file C:\J\workspace\ign_math-pr-win\ws\gz-math\src\python_pybind11\src\AxisAlignedBox.cc) [C:\J\workspace\ign_math-pr-win\ws\build\gz-math7\test\FAKE_INSTALL-prefix\src\FAKE_INSTALL-build\src\python_pybind11\math7.vcxproj]
C:\Program Files\Python311\include\pytypedefs.h(22): message : see declaration of '_frame' (compiling source file C:\J\workspace\ign_math-pr-win\ws\gz-math\src\python_pybind11\src\AxisAlignedBox.cc) [C:\J\workspace\ign_math-pr-win\ws\build\gz-math7\test\FAKE_INSTALL-prefix\src\FAKE_INSTALL-build\src\python_pybind11\math7.vcxproj]
C:\vcpkg\installed\x64-windows\include\pybind11\detail/type_caster_base.h(482,26): error C2027: use of undefined type '_frame' (compiling source file C:\J\workspace\ign_math-pr-win\ws\gz-math\src\python_pybind11\src\Angle.cc) [C:\J\workspace\ign_math-pr-win\ws\build\gz-math7\test\FAKE_INSTALL-prefix\src\FAKE_INSTALL-build\src\python_pybind11\math7.vcxproj]
C:\Program Files\Python311\include\pytypedefs.h(22): message : see declaration of '_frame' (compiling source file C:\J\workspace\ign_math-pr-win\ws\gz-math\src\python_pybind11\src\Angle.cc) [C:\J\workspace\ign_math-pr-win\ws\build\gz-math7\test\FAKE_INSTALL-prefix\src\FAKE_INSTALL-build\src\python_pybind11\math7.vcxproj]
  Color.cc
  DiffDriveOdometry.cc
  Ellipsoid.cc
  Filter.cc

The buildfarm for Fortress and Garden uses the vcpkg formula pybind11:x64-windows 2.9.1 which seems to be the same version than in Ubuntu Jammy.

Implementation suggestion

Might be a problem with different versions of python mixed in the build: Python 3.11 coming from PATH and installed as a Windows system binary and Python 3.10 from vcpkg that supports well pybind11 2.9.

❯ grep -i python ~/Downloads/CMakeCache.txt  | grep '3[10,11]'
PYTHON_LIBRARY:FILEPATH=C:/vcpkg/installed/x64-windows/lib/python310.lib
FIND_PACKAGE_MESSAGE_DETAILS_PYTHON:INTERNAL=C:/Program Files/Python311/python.exe3.11.2
PYTHON_LIBRARIES:INTERNAL=C:/vcpkg/installed/x64-windows/lib/python310.lib
PYTHON_MODULE_EXTENSION:INTERNAL=.cp311-win_amd64.pyd
_Python3_EXECUTABLE:INTERNAL=C:/Program Files/Python311/python.exe
_Python3_INTERPRETER_PROPERTIES:INTERNAL=Python;3;11;2;64;;cp311-win_amd64;C:\Program Files\Python311\Lib;C:\Program Files\Python311\Lib;C:\Program Files\Python311\Lib\site-packages;C:\Program Files\Python311\Lib\site-packages
_Python3_LIBRARY_RELEASE:INTERNAL=C:/Program Files/Python311/libs/python311.lib
_Python3_RUNTIME_LIBRARY_RELEASE:INTERNAL=C:/Program Files/Python311/python311.dll

A possible test could be to pass GZ_PYTHON_VERSION (from gz-cmake) to be 3.10 and see if 3.11 is not in the mix.