feat: Added CPython and pybind11 libraries

.gitmodules

@@ -1,3 +1,11 @@
 [submodule "dependencies/sqapi"]
 	path = dependencies/sqapi
 	url = https://gitlab.com/GothicMultiplayerTeam/dependencies/sqapi.git
+[submodule "dependencies/pybind11"]
+	path = dependencies/pybind11
+	url = https://github.com/pybind/pybind11.git
+	branch = master
+[submodule "dependencies/cpython"]
+	path = dependencies/cpython
+	url = https://github.com/python/cpython.git
+	branch = 3.12

CMakeLists.txt

@@ -1,18 +1,80 @@
 cmake_minimum_required(VERSION 3.21)
-
-project(squirrel-template)
+include(${CMAKE_ROOT}/Modules/ExternalProject.cmake)
+project(PyG2O)
 
 set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED TRUE)
 
-file(GLOB_RECURSE SRC
+# Specify build type
+if(NOT CMAKE_BUILD_TYPE)
+  set(CMAKE_BUILD_TYPE "Debug")
+endif()
+set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS "Debug" "Release" "RelWithDebInfo" "MinSizeRel")
+
+if (CMAKE_BUILD_TYPE MATCHES "Debug")
+  set(CPYTHON_BUILD_TYPE Debug)
+else ()
+  set(CPYTHON_BUILD_TYPE Release)
+endif()
+
+# Add the cpython as an external project that will be included in the build
+if(MSVC)
+  if(CMAKE_CL_64)
+    set(CPYTHON_PLATFORM x64)
+    set(CPYTHON_BUILD_DIR amd64)
+  else()
+    set(CPYTHON_PLATFORM x86)
+    set(CPYTHON_BUILD_DIR win32)
+  endif()
+  ExternalProject_Add(CPYTHON
+    DOWNLOAD_COMMAND ""
+    SOURCE_DIR ${CMAKE_SOURCE_DIR}/dependencies/cpython
+    CONFIGURE_COMMAND ""
+    BUILD_COMMAND cd ${CMAKE_SOURCE_DIR}/dependencies/cpython && MSBuild.exe /p:Configuration=${CPYTHON_BUILD_TYPE} /property:Platform=${CPYTHON_PLATFORM} "PCBuild/python.vcxproj" /nologo /verbosity:minimal /consoleloggerparameters:summar
+    INSTALL_COMMAND ""
+    TEST_COMMAND ""
+  )
+else()
+  ExternalProject_Add(CPYTHON
+    DOWNLOAD_COMMAND ""
+    SOURCE_DIR ${CMAKE_SOURCE_DIR}/dependencies/cpython
+    CONFIGURE_COMMAND cd ${CMAKE_SOURCE_DIR}/dependencies/cpython && ./configure --disable-static --enable-shared 
+    BUILD_COMMAND cd ${CMAKE_SOURCE_DIR}/dependencies/cpython && make
+    INSTALL_COMMAND ""
+    TEST_COMMAND ""
+  )
+endif()
+
+set(CPYTHON_STDLIB_DIR ${CMAKE_SOURCE_DIR}/dependencies/cpython/Lib)
+if(MSVC)
+  set(CPYTHON_INCLUDE_DIR ${CMAKE_SOURCE_DIR}/dependencies/cpython/Include ${CMAKE_SOURCE_DIR}/dependencies/cpython/PC)
+  set(CPYTHON_LIBRARY_DIR ${CMAKE_SOURCE_DIR}/dependencies/cpython/PCBuild/${CPYTHON_BUILD_DIR})
+  if(CMAKE_BUILD_TYPE MATCHES "Debug")
+    set(CPYTHON_BIN ${CMAKE_SOURCE_DIR}/dependencies/cpython/PCBuild/${CPYTHON_BUILD_DIR}/python314_d.dll)
+  else()
+    set(CPYTHON_BIN ${CMAKE_SOURCE_DIR}/dependencies/cpython/PCBuild/${CPYTHON_BUILD_DIR}/python314.dll)
+  endif()
+else()
+  set(CPYTHON_INCLUDE_DIR ${CMAKE_SOURCE_DIR}/dependencies/cpython/Include ${CMAKE_SOURCE_DIR}/dependencies/cpython)
+  set(CPYTHON_LIBRARY_DIR ${CMAKE_SOURCE_DIR}/dependencies/cpython)
+  set(CPYTHON_LIBRARY python3.8m)
+  set(CPYTHON_BIN ${CMAKE_SOURCE_DIR}/dependencies/dependencies/libpython3.8m.so)
+endif()
+
+file(GLOB_RECURSE SOURCE
 	"include/*.h"
 
 	"src/*.h"
 	"src/*.cpp"
 )
 
-add_library(${PROJECT_NAME} SHARED ${SRC})
+# Linking directories
+link_directories(${CPYTHON_LIBRARY_DIR})
+
+add_library(${PROJECT_NAME} SHARED ${SOURCE})
+
+# Dependencies
+add_dependencies(${PROJECT_NAME} CPYTHON)
 
 target_compile_definitions(${PROJECT_NAME}
 	PRIVATE
@@ -35,3 +97,21 @@ if(DEFINED OUT_FILE_SUFFIX)
 endif()
 
 add_subdirectory(dependencies)
+target_link_libraries(${PROJECT_NAME} ${CPYTHON_LIBRARY})
+target_link_libraries(${PROJECT_NAME} PRIVATE pybind11::embed)
+
+# Copy Python DLL to the build folder if different
+add_custom_command(
+  TARGET ${PROJECT_NAME}
+  POST_BUILD
+  COMMAND ${CMAKE_COMMAND}
+  -E copy_if_different ${CPYTHON_BIN} $<TARGET_FILE_DIR:${PROJECT_NAME}>
+)
+
+# Copy the Python stdlib into the build folder (needed by the embedded python)
+add_custom_command(
+  TARGET ${PROJECT_NAME} 
+  POST_BUILD
+  COMMAND ${CMAKE_COMMAND} 
+  -E copy_directory ${CPYTHON_STDLIB_DIR} $<TARGET_FILE_DIR:${PROJECT_NAME}>/lib
+)

dependencies/CMakeLists.txt

@@ -1,4 +1,5 @@
 add_subdirectory(sqapi)
+add_subdirectory(pybind11)
 
 target_link_libraries(${PROJECT_NAME}
 	PRIVATE