Add non_alire.gpr and update README

Author: SMerrony

README.md

@@ -26,17 +26,33 @@ It's a great use for one of those old smartphones or tablets you have lying in t
 
 ## Build and Install
 
-A binary (.deb) version for 64-bit Debian-based systems *may* be available as part of a release.
+A binary (.deb) version for modern 64-bit Debian-based systems *may* be available as part of a release.
 
-### Build from Source
-Keypadder is [hosted on GitHub](https://github.com/SMerrony/keypadder).
-It is written entirely in GNU Ada (GNAT) and built using the [Alire](https://alire.ada.dev/) build system.
+The Keypadder source is [hosted on GitHub](https://github.com/SMerrony/keypadder).
+
+It is written entirely in GNU Ada (GNAT).  You may build it using either the [Alire](https://alire.ada.dev/) build system or plain old `gprbuild`.  
+Building via Alire is preferred where it is possible as all necessary dependencies will be obtained for you automatically.
+
+### Alire Build
 
 Until the Alire crate is available, you should download (or clone) the source from Github
 and run `alr build` in the top-level directory.
 
 ***TODO  - Add more detail here once Alire crate is available***
 
+### Gprbuild Build
+
+#### Prerequisites
+You should the development version of `libaws` via your package manager.
+You will also need `ada-toml` from https://github.com/pmderodat/ada-toml - follow the instructions there to install it.
+
+Then...
+
+```
+mkdir obj
+gprbuild -Pnon_alire
+```
+
 ## Running Keypadder
 
 You need to start Keypadder on your desktop machine,

non_alire.gpr

@@ -0,0 +1,67 @@
+-- Copyright ©2023 Steve Merrony
+--
+-- Keypadder is free software: you can redistribute it and/or modify
+-- it under the terms of the GNU General Public License as published by
+-- the Free Software Foundation, either version 3 of the License, or
+-- (at your option) any later version.
+--
+-- Keypadder is distributed in the hope that it will be useful,
+-- but WITHOUT ANY WARRANTY; without even the implied warranty of
+-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+-- GNU General Public License for more details.
+--
+-- You should have received a copy of the GNU General Public License
+-- along with Keypadder.  If not, see <https://www.gnu.org/licenses/>.
+
+with "ada_toml.gpr";    -- installed locally
+with "aws";             -- installed via system package manager
+
+project Keypadder is
+   type Mode_Type is ("debug", "release");         -- all possible values
+   Mode : Mode_Type := external ("mode", "debug"); -- default
+
+   for Languages use ("Ada");
+   for Main use ("keypadder.adb");
+   for Source_Dirs use ("src");
+   for Object_Dir use "obj";
+   for Exec_Dir use "./";   
+   
+   package Compiler is
+      case Mode is
+         when "debug" =>
+            for Switches ("Ada") use ( "-fstack-check", 
+                                       "-g", 
+                                       "-gnata", 
+                                       "-gnateE", 
+                                       "-gnatwa", 
+                                       "-O0" 
+                                       );
+
+         when "release" =>
+            for Switches ("Ada") use ("-flto", "-O3");
+      end case;
+   end Compiler;
+
+   package Binder is
+      case Mode is
+         when "debug" =>
+            for Switches ("Ada") use ("-Es");
+         when "release" =>
+            for Switches ("Ada") use ("-Es");
+      end case;
+   end Binder;
+
+   -- package Builder is
+   --    for Global_Configuration_Pragmas use "gnat.adc";
+   -- end Builder;
+   
+   package Linker is
+      case Mode is
+         when "debug" =>
+            for Switches ("Ada") use ("-g");
+         when "release" =>
+            for Switches ("Ada") use ("-flto", "-O3");
+      end case;
+   end Linker;
+
+end Keypadder;