Various fixes

- Add C23 support
- Add C++23 support
- Fix generate_compile_command for non-MSVC

Clang.cmake

@@ -125,14 +125,16 @@ endfunction()
 macro(cstd_to_flag output version default)
 	set(${output} "${default}")
 	if(MSVC)
-		if("${version}" GREATER_EQUAL 17)
+		if("${version}" GREATER_EQUAL 23)
+			set(${output} "/std:clatest")
+		elseif("${version}" GREATER_EQUAL 17)
 			set(${output} "/std:c17")
 		elseif("${version}" GREATER_EQUAL 11)
 			set(${output} "/std:c11")
 		endif()
 	else()
 		if("${version}" GREATER_EQUAL 23)
-			set(${output} "-std=c2x")
+			set(${output} "-std=c23")
 		elseif("${version}" GREATER_EQUAL 17)
 			set(${output} "-std=c17")
 		elseif("${version}" GREATER_EQUAL 11)
@@ -148,7 +150,7 @@ endmacro()
 macro(cxxstd_to_flag output version default)
 	set(${output} "${default}")
 	if(MSVC)
-		if("${version}" GREATER_EQUAL 23)
+		if("${version}" GREATER_EQUAL 21)
 			set(${output} "/std:c++latest")
 		elseif("${version}" GREATER_EQUAL 20)
 			set(${output} "/std:c++20")
@@ -159,7 +161,7 @@ macro(cxxstd_to_flag output version default)
 		endif()
 	else()
 		if("${version}" GREATER_EQUAL 23)
-			set(${output} "-std=c++23")
+			set(${output} "-std=c++2b")
 		elseif("${version}" GREATER_EQUAL 20)
 			set(${output} "-std=c++20")
 		elseif("${version}" GREATER_EQUAL 17)
@@ -201,7 +203,7 @@ function(generate_compile_commands_json)
 	if(CMAKE_GENERATOR IN_LIST cc_generators)
 		foreach(current_target ${_ARGS_TARGETS})
 			set_target_properties(${current_target} PROPERTIES
-				CMAKE_EXPORT_COMPILE_COMMANDS ON
+				EXPORT_COMPILE_COMMANDS ON
 			)
 		endforeach()
 		return()