feat(Core): Enable C++20 support

conf/dist/config.cmake

@@ -87,8 +87,5 @@ endif()
 set(WITH_SOURCE_TREE       "hierarchical" CACHE STRING "Build the source tree for IDE's.")
 set_property(CACHE WITH_SOURCE_TREE PROPERTY STRINGS no flat hierarchical)
 
-# If disable - use c++17
-option(USE_CPP_20 "Enable c++20 standard" 0)
-
 # Config abort
 option(CONFIG_ABORT_INCORRECT_OPTIONS "Enable abort if core found incorrect option in config files" 0)

src/cmake/macros/ConfigureBaseTargets.cmake

@@ -16,15 +16,9 @@ add_library(acore-compile-option-interface INTERFACE)
 # Use -std=c++11 instead of -std=gnu++11
 set(CXX_EXTENSIONS OFF)
 
-if (USE_CPP_20)
-  # Enable support С++20
-  set(CMAKE_CXX_STANDARD 20)
-  message(STATUS "Enabled С++20 standard")
-else()
-  # Enable support С++17
-  set(CMAKE_CXX_STANDARD 17)
-  message(STATUS "Enabled С++17 standard")
-endif()
+# Enable C++20 support
+set(CMAKE_CXX_STANDARD 20)
+message(STATUS "Enabled С++20 standard")
 
 # An interface library to make the warnings level available to other targets
 # This interface taget is set-up through the platform specific script

src/cmake/showoptions.cmake

@@ -182,12 +182,6 @@ if(BUILD_SHARED_LIBS)
   WarnAboutSpacesInBuildPath()
 endif()
 
-if (USE_CPP_20)
-  message("")
-  message(" *** Enabled C++20 standart")
-  message(" *** Please note that this is an experimental feature!")
-endif()
-
 if (CONFIG_ABORT_INCORRECT_OPTIONS)
   message("")
   message(" WARNING !")