First small example for nanobind module.

.gitmodules

@@ -55,3 +55,6 @@
 [submodule "thirdparty/udpcap"]
 	path = thirdparty/udpcap/udpcap
 	url = https://github.com/eclipse-ecal/udpcap.git
+[submodule "thirdparty/nanobind/nanobind"]
+	path = thirdparty/nanobind/nanobind
+	url = https://github.com/wjakob/nanobind.git

CMakeLists.txt

@@ -127,6 +127,9 @@ option(ECAL_THIRDPARTY_BUILD_CMAKE_FUNCTIONS   "Build CMakeFunctions with eCAL"
 option(ECAL_THIRDPARTY_BUILD_FINEFTP           "Build fineFTP with eCAL"                                           ON)
 option(ECAL_THIRDPARTY_BUILD_FTXUI             "Build ftxui with eCAL"                                             ON)
 option(ECAL_THIRDPARTY_BUILD_GTEST             "Build gtest with eCAL"                                            OFF)
+if (BUILD_PY_BINDING)
+option(ECAL_THIRDPARTY_BUILD_NANOBIND          "Build nanobind with eCAL"                                          ON)
+endif()
 option(ECAL_THIRDPARTY_BUILD_RECYCLE           "Build steinwurf::recylce with eCAL"                                ON)
 option(ECAL_THIRDPARTY_BUILD_SPDLOG            "Build spdlog with eCAL"                                            ON)
 option(ECAL_THIRDPARTY_BUILD_SIMPLEINI         "Build simpleini with eCAL"                                         ON)
@@ -223,6 +226,7 @@ set(possible_subprojects
   GTest
   HDF5
   #libssh2
+  nanobind
   Protobuf
   qwt
   recycle

doc/rst/license/thirdparty_licenses.rst

@@ -147,6 +147,13 @@ 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

@@ -64,6 +64,7 @@ else()
 endif()
 
 add_subdirectory(core)
+add_subdirectory(nanobind_core)
 if(HAS_HDF5)
   add_subdirectory(ecalhdf5)
 endif()

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/Modules/Findnanobind.cmake

@@ -0,0 +1 @@
+set(nanobind_FOUND TRUE)

thirdparty/nanobind/build-nanobind.cmake

@@ -0,0 +1,10 @@
+message(STATUS "building nanobind")
+
+if (CMAKE_VERSION VERSION_GREATER_EQUAL "3.25.0")
+add_subdirectory(thirdparty/nanobind/nanobind EXCLUDE_FROM_ALL SYSTEM)
+else ()
+add_subdirectory(thirdparty/nanobind/nanobind EXCLUDE_FROM_ALL)
+endif ()
+
+
+list(PREPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_LIST_DIR}/Modules)