Further work for GCC 11.

  * INSTALL.md: Noted that RELEASE should be set to "gcc11" for GCC 11.
  * common/common.gpr (Compiler_Release): include "gcc11".
    (Release_Path): new, set to Release unless "gcc11", in which case
      set to "gnat-ce-2020".
    (Paths): use Release_Path.

INSTALL.md

@@ -30,7 +30,7 @@ Values for `RELEASE` are as below:
 | FSF GCC 8 | `gcc8` |
 | FSF GCC 9 | `gcc8` |
 | FSF GCC 10 | `gcc8` |
-| FSF GCC 11 | `gnat-ce-2020` |
+| FSF GCC 11 | `gcc11` |
 | GNAT GPL 2016 | `gcc6` |
 | GNAT GPL 2017 | `gnat-gpl-2017` |
 | GNAT CE 2018 | `gcc8` |

common/common.gpr

@@ -1,4 +1,4 @@
--- Copyright (C) 2018, 2020 Free Software Foundation, Inc.
+-- Copyright (C) 2018-2021 Free Software Foundation, Inc.
 
 -- This file is part of the Cortex GNAT RTS package.
 --
@@ -19,14 +19,21 @@
 abstract project Common is
 
  type Compiler_Release is
- ("gcc6", "gnat-gpl-2017", "gcc7", "gcc8", "gnat-ce-2020");
+ ("gcc6", "gnat-gpl-2017", "gcc7", "gcc8", "gnat-ce-2020", "gcc11");
  Release : Compiler_Release := external ("RELEASE", "gcc8");
+ Release_Path := Release;
+ case Release is
+ when "gcc11" =>
+ Release_Path := "gnat-ce-2020";
+ when others =>
+ null;
+ end case;
 
  type Install_Locally is ("yes", "no");
  Local : Install_Locally := external ("INSTALL_LOCALLY", "yes");
 
  Paths := (project'Project_Dir,
  project'Project_Dir & "math",
- project'Project_Dir & Release);
+ project'Project_Dir & Release_Path);
 
 end Common;