Move to C++20 and other improvements (#79)

* Move to C++20 by default
* Get rid of Optional
* Improve python packaging
* Bump pybind11 to latest
* Bump minimum cmake to 3.31
* Bump minimum emsdk to 4.0.21
* Removed cache of emsdk in github actions
* Add stackTrace to DEFAULT_LIBRARY_FUNCS_TO_INCLUDE

Author: kunitoki

.github/workflows/build_wasm.yml

@@ -30,8 +30,7 @@ env:
     libasound2-dev libjack-jackd2-dev ladspa-sdk libcurl4-openssl-dev libfreetype6-dev
     libx11-dev libxcomposite-dev libxcursor-dev libxcursor-dev libxext-dev libxi-dev libxinerama-dev
     libxrandr-dev libxrender-dev libglu1-mesa-dev mesa-common-dev
-  EM_VERSION: 3.1.45
-  EM_CACHE_FOLDER: "emsdk-cache"
+  EM_VERSION: 4.0.21
 
 jobs:
   build_tests:
@@ -46,7 +45,6 @@ jobs:
       uses: mymindstorm/setup-emsdk@v14
       with:
         version: ${{ env.EM_VERSION }}
-        actions-cache-folder: ${{ env.EM_CACHE_FOLDER }}
     - name: Configure
       run: emcmake cmake ${{ github.workspace }} -G "Ninja Multi-Config" -B ${{ runner.workspace }}/build -DYUP_ENABLE_TESTS=ON -DYUP_ENABLE_EXAMPLES=ON
     - run: cmake --build ${{ runner.workspace }}/build --config Debug --parallel 4 --target yup_tests
@@ -68,7 +66,6 @@ jobs:
       uses: mymindstorm/setup-emsdk@v14
       with:
         version: ${{ env.EM_VERSION }}
-        actions-cache-folder: ${{ env.EM_CACHE_FOLDER }}
     - name: Configure
       run: emcmake cmake ${{ github.workspace }} -G "Ninja Multi-Config" -B ${{ runner.workspace }}/build -DYUP_ENABLE_TESTS=ON -DYUP_ENABLE_EXAMPLES=ON
     - run: cmake --build ${{ runner.workspace }}/build --config Debug --parallel 4 --target example_console
@@ -86,7 +83,6 @@ jobs:
       uses: mymindstorm/setup-emsdk@v14
       with:
         version: ${{ env.EM_VERSION }}
-        actions-cache-folder: ${{ env.EM_CACHE_FOLDER }}
     - name: Configure
       run: emcmake cmake ${{ github.workspace }} -G "Ninja Multi-Config" -B ${{ runner.workspace }}/build -DYUP_ENABLE_TESTS=ON -DYUP_ENABLE_EXAMPLES=ON
     - run: cmake --build ${{ runner.workspace }}/build --config Debug --parallel 4 --target example_app
@@ -104,7 +100,6 @@ jobs:
       uses: mymindstorm/setup-emsdk@v14
       with:
         version: ${{ env.EM_VERSION }}
-        actions-cache-folder: ${{ env.EM_CACHE_FOLDER }}
     - name: Configure
       run: emcmake cmake ${{ github.workspace }} -G "Ninja Multi-Config" -B ${{ runner.workspace }}/build -DYUP_ENABLE_TESTS=ON -DYUP_ENABLE_EXAMPLES=ON
     - run: cmake --build ${{ runner.workspace }}/build --config Debug --parallel 4 --target example_graphics

CMakeLists.txt

@@ -17,12 +17,14 @@
 #
 # ==============================================================================
 
-cmake_minimum_required (VERSION 3.28)
+cmake_minimum_required (VERSION 3.31)
 
 include (cmake/yup.cmake)
 _yup_get_project_version_string (${CMAKE_CURRENT_LIST_DIR}/modules yup_version)
 _yup_message (STATUS "Building project version ${yup_version}")
 
+set (CMAKE_CXX_SCAN_FOR_MODULES 0)
+
 if (YUP_PLATFORM_MAC)
     set (CMAKE_OSX_DEPLOYMENT_TARGET 11.0)
     set (CMAKE_XCODE_GENERATE_SCHEME OFF)

README.md

@@ -102,7 +102,7 @@ YUP brings a suite of powerful features, including:
 
 ## Prerequisites
 Before building, ensure you have a:
-- C++17-compliant compiler
+- C++20-compliant compiler
 - CMake 3.28 or later
 
 
@@ -293,7 +293,7 @@ START_YUP_APPLICATION (MyApplication)
 And add this as `CMakeLists.txt`:
 
 ```cmake
-cmake_minimum_required (VERSION 3.28)
+cmake_minimum_required (VERSION 3.31)
 
 set (target_name my_app)
 set (target_version "0.0.1")

cmake/toolchains/ios.cmake

@@ -154,7 +154,7 @@
 #   command.
 #
 
-cmake_minimum_required(VERSION 3.16.0)
+cmake_minimum_required(VERSION 3.31)
 
 # CMake invokes the toolchain file twice during the first build, but only once during subsequent rebuilds.
 if(DEFINED ENV{_IOS_TOOLCHAIN_HAS_RUN})

cmake/yup_audio_plugin.cmake

@@ -36,7 +36,7 @@ function (yup_audio_plugin)
 
     cmake_parse_arguments (YUP_ARG "${options}" "${one_value_args}" "${multi_value_args}" ${ARGN})
 
-    _yup_set_default (YUP_ARG_TARGET_CXX_STANDARD 17)
+    _yup_set_default (YUP_ARG_TARGET_CXX_STANDARD 20)
 
     set (target_name "${YUP_ARG_TARGET_NAME}")
     set (target_version "${YUP_ARG_TARGET_VERSION}")

cmake/yup_dependencies.cmake

@@ -89,7 +89,7 @@ function (_yup_fetch_perfetto)
     FetchContent_MakeAvailable (Perfetto)
 
     add_library (perfetto STATIC)
-    target_compile_features (perfetto PUBLIC cxx_std_17)
+    target_compile_features (perfetto PUBLIC cxx_std_20)
 
     target_sources (perfetto
         PRIVATE "$<BUILD_INTERFACE:${perfetto_SOURCE_DIR}/sdk/perfetto.cc>"

cmake/yup_modules.cmake

@@ -183,7 +183,7 @@ function (_yup_module_setup_target module_name
     if (module_cpp_standard)
         target_compile_features (${module_name} INTERFACE cxx_std_${module_cpp_standard})
     else()
-        target_compile_features (${module_name} INTERFACE cxx_std_17)
+        target_compile_features (${module_name} INTERFACE cxx_std_20)
     endif()
 
     set_target_properties (${module_name} PROPERTIES
@@ -366,7 +366,7 @@ function (yup_add_module module_path modules_definitions module_group)
         endif()
     endforeach()
 
-    _yup_set_default (module_cpp_standard "17")
+    _yup_set_default (module_cpp_standard "20")
     _yup_set_default (module_arc_enabled OFF)
     _yup_set_default (module_needs_python OFF)
     _yup_resolve_variable_paths ("${module_searchpaths}" module_searchpaths)

cmake/yup_platforms.cmake

@@ -37,7 +37,7 @@ function (_yup_prepare_gradle_android)
     _yup_set_default (YUP_ANDROID_TOOLCHAIN "clang")
     _yup_set_default (YUP_ANDROID_PLATFORM "android-${YUP_ANDROID_MIN_SDK_VERSION}")
     _yup_set_default (YUP_ANDROID_STL "c++_shared")
-    _yup_set_default (YUP_ANDROID_CPP_VERSION "17")
+    _yup_set_default (YUP_ANDROID_CPP_VERSION "20")
     _yup_set_default (YUP_ANDROID_APPLICATION_NAMESPACE "org.yup")
     _yup_set_default (YUP_ANDROID_APPLICATION_ID "org.yup.default_app")
     _yup_set_default (YUP_ANDROID_APPLICATION_VERSION "1.0")

cmake/yup_python.cmake

@@ -26,7 +26,7 @@ function (yup_prepare_python_stdlib target_name python_tools_path output_variabl
 
     cmake_parse_arguments (YUP_ARG "${options}" "${one_value_args}" "${multi_value_args}" ${ARGN})
 
-    set (default_ignored_library_patterns "lib2to3" "pydoc_data" "_xxtestfuzz*")
+    set (default_ignored_library_patterns "lib2to3")
 
     set (ignored_library_patterns ${default_ignored_library_patterns})
     list (APPEND ignored_library_patterns ${YUP_ARG_IGNORED_LIBRARY_PATTERNS})
@@ -45,7 +45,7 @@ function (yup_prepare_python_stdlib target_name python_tools_path output_variabl
 
         get_filename_component (python_root_path "${python_embed_env_SOURCE_DIR}" REALPATH)
     else()
-        get_filename_component (python_root_path "${Python_LIBRARY_DIRS}" REALPATH)
+        get_filename_component (python_root_path "${Python_LIBRARY_DIRS}/.." REALPATH)
     endif()
 
     _yup_message (STATUS "Executing python stdlib archive generator tool")

cmake/yup_standalone.cmake

@@ -35,7 +35,7 @@ function (yup_standalone_app)
 
     cmake_parse_arguments (YUP_ARG "${options}" "${one_value_args}" "${multi_value_args}" ${ARGN})
 
-    _yup_set_default (YUP_ARG_TARGET_CXX_STANDARD 17)
+    _yup_set_default (YUP_ARG_TARGET_CXX_STANDARD 20)
     _yup_set_default (YUP_ARG_TARGET_ICON "${CMAKE_SOURCE_DIR}/cmake/resources/app-icon.png")
 
     set (target_name "${YUP_ARG_TARGET_NAME}")
@@ -177,15 +177,14 @@ function (yup_standalone_app)
             -sASSERTIONS=1
             -sDISABLE_EXCEPTION_CATCHING=0
             -sERROR_ON_UNDEFINED_SYMBOLS=1
-            -sDEMANGLE_SUPPORT=1
             -sSTACK_OVERFLOW_CHECK=2
             -sFORCE_FILESYSTEM=1
             -sNODERAWFS=0
             -sWASMFS=1
             -sFETCH=1
             #-sASYNCIFY=1
             -sEXPORTED_RUNTIME_METHODS=ccall,cwrap
-            -sDEFAULT_LIBRARY_FUNCS_TO_INCLUDE='$dynCall'
+            -sDEFAULT_LIBRARY_FUNCS_TO_INCLUDE='$dynCall','$stackTrace'
             --shell-file "${YUP_ARG_CUSTOM_SHELL}")
 
         foreach (preload_file ${YUP_ARG_PRELOAD_FILES})