pybind11: 3.0.0 (#455)

Update to pybind11 v3.0.0
https://github.com/pybind/pybind11/releases/tag/v3.0.0

Author: ax3l

README.md

@@ -58,7 +58,7 @@ pyAMReX depends on the following popular third party software.
 - a mature [C++17](https://en.wikipedia.org/wiki/C%2B%2B17) compiler, e.g., GCC 8, Clang 7, NVCC 11.0, MSVC 19.15 or newer
 - [CMake 3.24.0+](https://cmake.org)
 - [AMReX *development*](https://amrex-codes.github.io): we automatically download and compile a copy of AMReX
-- [pybind11](https://github.com/pybind/pybind11/) 2.13.0+: we automatically download and compile a copy of pybind11 ([new BSD](https://github.com/pybind/pybind11/blob/master/LICENSE))
+- [pybind11](https://github.com/pybind/pybind11/) 3.0.0+: we automatically download and compile a copy of pybind11 ([new BSD](https://github.com/pybind/pybind11/blob/master/LICENSE))
   - [Python](https://python.org) 3.9+
   - [Numpy](https://numpy.org) 1.15+
 
@@ -205,7 +205,7 @@ Furthermore, pyAMReX adds a few selected CMake build options:
 | `pyAMReX_pybind11_src`       | *None*                                     | Absolute path to pybind11 source directory (preferred if set) |
 | `pyAMReX_pybind11_internal`  | **ON**/OFF                                 | Needs a pre-installed pybind11 library if set to `OFF`        |
 | `pyAMReX_pybind11_repo`      | `https://github.com/pybind/pybind11.git`   | Repository URI to pull and build pybind11 from                |
-| `pyAMReX_pybind11_branch`    | `v2.13.6`                                  | Repository branch for `pyAMReX_pybind11_repo`                 |
+| `pyAMReX_pybind11_branch`    | `v3.0.0`                                   | Repository branch for `pyAMReX_pybind11_repo`                 |
 | `Python_EXECUTABLE`          | (newest found)                             | Path to Python executable                                     |
 
 As one example, one can also build against a local AMReX copy.

cmake/dependencies/pybind11.cmake

@@ -41,7 +41,7 @@ function(find_pybind11)
             mark_as_advanced(FETCHCONTENT_UPDATES_DISCONNECTED_FETCHEDpybind11)
         endif()
     elseif(NOT pyAMReX_pybind11_internal)
-        find_package(pybind11 2.13.0 CONFIG REQUIRED)
+        find_package(pybind11 3.0.0 CONFIG REQUIRED)
         message(STATUS "pybind11: Found version '${pybind11_VERSION}'")
     endif()
 endfunction()
@@ -56,7 +56,7 @@ option(pyAMReX_pybind11_internal "Download & build pybind11" ON)
 set(pyAMReX_pybind11_repo "https://github.com/pybind/pybind11.git"
     CACHE STRING
     "Repository URI to pull and build pybind11 from if(pyAMReX_pybind11_internal)")
-set(pyAMReX_pybind11_branch "v2.13.6"
+set(pyAMReX_pybind11_branch "v3.0.0"
     CACHE STRING
     "Repository branch for pyAMReX_pybind11_repo if(pyAMReX_pybind11_internal)")
 

docs/source/install/dependencies.rst

@@ -10,7 +10,7 @@ Please see installation instructions below.
 - `CMake 3.24.0+ <https://cmake.org>`__
 - `Git 2.18+ <https://git-scm.com>`__
 - `AMReX <https://amrex-codes.github.io>`__: we automatically download and compile a copy
-- `pybind11 2.13.0+ <https://github.com/pybind/pybind11/>`__: we automatically download and compile a copy
+- `pybind11 3.0.0+ <https://github.com/pybind/pybind11/>`__: we automatically download and compile a copy
 - `Python 3.9+ <https://www.python.org>`__
 
   - `numpy 1.15+ <https://numpy.org>`__

src/Base/CoordSys.cpp

@@ -14,12 +14,14 @@ void init_CoordSys(py::module& m)
 
     py::class_<CoordSys> coord_sys(m, "CoordSys");
 
-    py::enum_<CoordSys::CoordType>(coord_sys, "CoordType")
+    py::native_enum<CoordSys::CoordType>(coord_sys, "CoordType", "enum.IntEnum")
         .value("undef", CoordSys::CoordType::undef)
         .value("cartesian", CoordSys::CoordType::cartesian)
         .value("RZ", CoordSys::CoordType::RZ)
         .value("SPHERICAL", CoordSys::CoordType::SPHERICAL)
-        .export_values();
+        .export_values()
+        .finalize()
+    ;
 
     coord_sys.def("__repr__",
              [](const CoordSys&) {

src/Base/IndexType.cpp

@@ -29,10 +29,12 @@ void init_IndexType(py::module &m) {
 
     py::class_< IndexType > index_type(m, "IndexType");
 
-    py::enum_<IndexType::CellIndex>(index_type, "CellIndex")
+    py::native_enum<IndexType::CellIndex>(index_type, "CellIndex", "enum.IntEnum")
         .value("CELL", IndexType::CellIndex::CELL)
         .value("NODE", IndexType::CellIndex::NODE)
-        .export_values();
+        .export_values()
+        .finalize()
+    ;
 
     index_type.def("__repr__",
              [](py::object& obj) {

src/pyAMReX.H

@@ -11,6 +11,7 @@
 #include <pybind11/pybind11.h>
 #include <pybind11/functional.h>
 #include <pybind11/iostream.h>
+#include <pybind11/native_enum.h>
 #include <pybind11/numpy.h>
 #include <pybind11/operators.h>
 #include <pybind11/stl.h>