[python] First small example for nanobind module.

.github/workflows/build-macos.yml

@@ -41,7 +41,7 @@ jobs:
     - name: Checkout
       uses: actions/checkout@v4
       with:
-        submodules:  'true'
+        submodules:  'recursive'
         fetch-depth: 0
 
     - name: Display Python version

.github/workflows/build-ubuntu.yml

@@ -72,7 +72,7 @@ jobs:
     - name: Checkout
       uses: actions/checkout@v4
       with:
-        submodules:  'false'
+        submodules:  'recursive'
         fetch-depth: 0
 
     - name: Update / download Submodules (selected ones)

.github/workflows/build-windows.yml

@@ -35,7 +35,7 @@ jobs:
     - name: Checkout
       uses: actions/checkout@v4
       with:
-        submodules:  'true'
+        submodules:  'recursive'
         fetch-depth: 0
 
     - name: Create Python virtualenv

.github/workflows/clang-tidy-review.yml

@@ -22,7 +22,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
         with:
-          submodules:  'true'
+          submodules:  'recursive'
           fetch-depth: 0
 
       - name: Run clang-tidy

.github/workflows/documentation.yml

@@ -23,7 +23,7 @@ jobs:
     - name: Checkout
       uses: actions/checkout@v4
       with:
-        submodules:  'true'
+        submodules:  'recursive'
         fetch-depth: 0
         ref: 'support/v5.13'
 

.github/workflows/ecal-fat-source.yml

@@ -12,7 +12,7 @@ jobs:
     - name: Checkout
       uses: actions/checkout@v4
       with:
-        submodules:  'true'
+        submodules:  'recursive'
         fetch-depth: 0
 
     - name: Create clean eCAL directory

.gitmodules

@@ -58,3 +58,6 @@
 [submodule "thirdparty/ecaludp/ecaludp"]
 	path = thirdparty/ecaludp/ecaludp
 	url = https://github.com/eclipse-ecal/ecaludp.git
+[submodule "thirdparty/nanobind/nanobind"]
+	path = thirdparty/nanobind/nanobind
+	url = https://github.com/KerstinKeller/nanobind.git

CMakeLists.txt

@@ -1,6 +1,6 @@
 # ========================= eCAL LICENSE =================================
 #
-# Copyright (C) 2016 - 2019 Continental Corporation
+# Copyright (C) 2016 - 2024 Continental Corporation
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -489,6 +489,7 @@ message(STATUS "ECAL_THIRDPARTY_BUILD_FINEFTP                  : ${ECAL_THIRDPAR
 message(STATUS "ECAL_THIRDPARTY_BUILD_FTXUI                    : ${ECAL_THIRDPARTY_BUILD_FTXUI}")
 message(STATUS "ECAL_THIRDPARTY_BUILD_GTEST                    : ${ECAL_THIRDPARTY_BUILD_GTEST}")
 message(STATUS "ECAL_THIRDPARTY_BUILD_HDF5                     : ${ECAL_THIRDPARTY_BUILD_HDF5}")
+message(STATUS "ECAL_THIRDPARTY_BUILD_NANOBIND                 : ${ECAL_THIRDPARTY_BUILD_NANOBIND}")
 message(STATUS "ECAL_THIRDPARTY_BUILD_PROTOBUF                 : ${ECAL_THIRDPARTY_BUILD_PROTOBUF}")
 message(STATUS "ECAL_THIRDPARTY_BUILD_QWT                      : ${ECAL_THIRDPARTY_BUILD_QWT}")
 message(STATUS "ECAL_THIRDPARTY_BUILD_RECYCLE                  : ${ECAL_THIRDPARTY_BUILD_RECYCLE}")

CMakePresets.json

@@ -69,6 +69,8 @@
       "cacheVariables": {
         "HAS_HDF5": "ON",
         "BUILD_PY_BINDING": "ON",
+        "BUILD_APPS": "OFF",
+        "BUILD_SAMPLES": "OFF",
         "BUILD_SHARED": "OFF",
         "ECAL_THIRDPARTY_BUILD_HDF5": "ON"
       }

cmake/submodule_dependencies.cmake

@@ -13,6 +13,7 @@ set(ecal_submodule_dependencies
   GTest
   HDF5
   #libssh2
+  nanobind
   Protobuf
   qwt
   recycle

doc/rst/license/thirdparty_licenses.rst

@@ -154,6 +154,13 @@ They are used by Eclipse eCAL, but not associated to it in any way.
      - - |fa-file-alt| Copy in repository: :file:`/cpack/innosetup/modpath.iss`
        - |fa-windows| Binary distributions for Windows (Installer only)
 
+   * - `nanobind <https://github.com/wjakob/nanobind>`_
+     - :ref:`bsd_3`
+     - 2022, Wenzel Jakob
+     - - |fa-github| Git submodule ``/tirdparty/nanobind``
+       - |fa-windows| Binary distributions for Windows
+       - |fa-ubuntu| Binary distributions for Linux
+
    * - `npcap <https://nmap.org/npcap/>`_
      - :ref:`npcap_license`
      - 2013-2021 by Insecure.Com LLC

lang/python/CMakeLists.txt

@@ -1,6 +1,6 @@
 # ========================= eCAL LICENSE =================================
 #
-# Copyright (C) 2016 - 2019 Continental Corporation
+# Copyright (C) 2016 - 2024 Continental Corporation
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -40,6 +40,9 @@ set(CMAKE_BUILD_WITH_INSTALL_RPATH "ON")
 add_subdirectory(core)
 add_dependencies(${PROJECT_NAME} _ecal_core_py)
 
+add_subdirectory(nanobind_core)
+add_dependencies(${PROJECT_NAME} nanobind_core)
+
 if(HAS_HDF5)
   add_subdirectory(ecalhdf5)
   add_dependencies(${PROJECT_NAME} _ecal_hdf5_py)

lang/python/nanobind_core/CMakeLists.txt

@@ -0,0 +1,28 @@
+# Try to import all Python components potentially needed by nanobind
+find_package(Python
+  REQUIRED COMPONENTS Interpreter Development.Module
+  OPTIONAL_COMPONENTS Development.SABIModule)
+
+# Import nanobind through CMake's find_package mechanism
+find_package(nanobind CONFIG REQUIRED)
+
+# We are now ready to compile the actual extension module
+nanobind_add_module(
+  # Name of the extension
+  nanobind_core
+
+  # Target the stable ABI for Python 3.12+, which reduces
+  # the number of binary wheels that must be built. This
+  # does nothing on older Python versions
+  STABLE_ABI
+
+  # Source code goes here
+  main.cpp
+)
+
+# Install directive for scikit-build-core
+install(TARGETS nanobind_core LIBRARY DESTINATION nanobind_core)
+
+if(WIN32)
+  set_property(TARGET nanobind_core PROPERTY FOLDER lang/python/core)
+endif()

lang/python/nanobind_core/main.cpp

@@ -0,0 +1,5 @@
+#include <nanobind/nanobind.h>
+
+NB_MODULE(nanobind_core, m) {
+    m.def("hello", []() { return "Hello world!"; });
+}

thirdparty/nanobind/build-nanobind.cmake

@@ -0,0 +1,9 @@
+include_guard(GLOBAL)
+
+message(STATUS "building nanobind")
+
+if (CMAKE_VERSION VERSION_GREATER_EQUAL "3.25.0")
+add_subdirectory(${CMAKE_CURRENT_LIST_DIR}/nanobind thirdparty/nanobind EXCLUDE_FROM_ALL SYSTEM)
+else ()
+add_subdirectory(${CMAKE_CURRENT_LIST_DIR}/nanobind thirdparty/nanobind EXCLUDE_FROM_ALL)
+endif ()