Build with GNAT CE 2021 failed

I tried to build AWS v23.0.0 with GNAT CE 2021 and it is failed.

The first build is failed as described in the issue #351. These errors can be fixed in that way:

aws-server.adb:971:

Reference := S.Wait_For_Data'Access;

became

Reference := S.Wait_For_Data'Unchecked_Access;

aws-net-std_gnat.adb:701:

overriding procedure Set_Close_On_Exec (Socket : Socket_Type) is
      Status : Boolean;
   begin
      Sockets.Set_Close_On_Exec (Socket.S.FD, True, Status);
   end Set_Close_On_Exec;

became

overriding procedure Set_Close_On_Exec (Socket : Socket_Type) is
      Status : Boolean;
      pragma Unreferenced (Status);
   begin
      Sockets.Set_Close_On_Exec (Socket.S.FD, True, Status);
   end Set_Close_On_Exec;

These errors are not last, and new build gives new error:

[Ada]          ada2wsdl-parser.adb
ada2wsdl-parser.adb:971:28: error: "Ada_Composite_Constraint" is undefined
ada2wsdl-parser.adb:972:16: error: no selector "As_Composite_Constraint" for type "Constraint'Class" defined at libadalang-analysis.ads:674
ada2wsdl-parser.adb:974:24: error: no selector "As_Composite_Constraint" for type "Constraint'Class" defined at libadalang-analysis.ads:674

   compilation of ada2wsdl-parser.adb failed

gprbuild: *** compilation phase failed

As I understood the error source is Libadalang package, which is too old for GNAT 2021.

How it can be fixed?

Reproduce the AWS v23.0.0 build with GNAT CE 2021, then inspect ada2wsdl-parser.adb around lines 971-974 and the Libadalang declarations in libadalang-analysis.ads. Also review the reported locations in aws-server.adb and aws-net-std_gnat.adb. Done means the project builds successfully without these GNAT compatibility errors.