cleanup CMakeList.txt

Author: Mizux

CMakeLists.txt

@@ -1,23 +1,25 @@
 # This file is just an orchestration
-cmake_minimum_required(VERSION 3.18)
+cmake_minimum_required(VERSION 3.16..3.31)
 list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
 
-option(CMAKE_EXPORT_COMPILE_COMMANDS "Export compile command" TRUE)
+# Enable output of compile commands during generation.
+option(CMAKE_EXPORT_COMPILE_COMMANDS "Export compile command" ON)
 
-project(CMakePybind11 VERSION 1.0 LANGUAGES CXX)
+project(CMakePybind11 VERSION 1.0 LANGUAGES C CXX)
 set(PROJECT_NAMESPACE cmpb11)
 message(STATUS "${PROJECT_NAME} version: ${PROJECT_VERSION}")
 #message(STATUS "major: ${PROJECT_VERSION_MAJOR}")
 #message(STATUS "minor: ${PROJECT_VERSION_MINOR}")
 #message(STATUS "patch: ${PROJECT_VERSION_PATCH}")
 
+message(STATUS "system name: ${CMAKE_SYSTEM_NAME}")
+# Set max os target version.
+set(CMAKE_OSX_DEPLOYMENT_TARGET 10.15)
+
 set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_EXTENSIONS OFF)
 
-# Set max os target version.
-set(CMAKE_OSX_DEPLOYMENT_TARGET 10.15)
-
 # Default Build Type to be Release
 get_property(isMultiConfig GLOBAL PROPERTY GENERATOR_IS_MULTI_CONFIG)
 if(isMultiConfig)
@@ -77,8 +79,6 @@ include(ccache)
 set_property(GLOBAL PROPERTY CTEST_TARGETS_ADDED 1)
 include(CTest)
 
-include(cpp)
-
 option(BUILD_pybind11 "Build pybind11 library" ON)
 message(STATUS "Build pybind11: ${BUILD_pybind11}")
 
@@ -93,6 +93,9 @@ option(VENV_USE_SYSTEM_SITE_PACKAGES "Python venv can use system site packages"
 message(STATUS "Python: Allow venv to use system site packages: ${VENV_USE_SYSTEM_SITE_PACKAGES}")
 
 include(deps)
+
+include(cpp)
+
 include(python)
 
 add_subdirectory(tests)