Trouble getting started with GNAT for Win95/NT

Trouble getting started with GNAT for Win95/NT

[Matthew Kennedy]

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Hello all, (My Ada learning is coming along very nicely, but...)

I've been using GNAT for DOS and now I would like to try out GNAT for
Win95/NT - I use Win95. However when I install it and try to compile any
of my creations, I get this error (by the way, I included the specific
example 'state.adb' as an attachment):

c:\usr >gnatmake state.adb
gcc -c state.adb
state.adb:11:06: "Ada.Numerics.Discrete_Random" is not a predefined
library unit

compilation abandoned
gnatmake: "state.adb" compilation error

c:\usr >

I had no such trouble when using GNAT DOS. Here are some of my
installation details and things I have tried.

1. I use a 486DX4, 24Mb RAM, plenty of hard drive, compilation occurs 
   in a Win95 DOS box. I have tried a 'typical' installation and I have
   also tried a 'custom' installation with all option checked. Result:
   same error.

2. Environment variables set: 

ADA_INCLUDE_PATH=C:\USR\LOCAL\ADAINCLUDE
ADA_OBJECTS_PATH=C:\USR\LOCAL\LIB\GCC-LIB\I386-PC-CYGWIN32\2.7.2\ADALIB
PATH=C:\WINDOWS;C:\WINDOWS\COMMAND;C:\DOS;C:\USR\BIN;C:\USR\LOCAL\LIB\GCC-LIB\I386-PC-CYGWIN32\2.7.2\;C:\USR\EMACS-19.34\BIN
LFN=Y

3. Things I've thought of: In my DOS installation, I noticed that my
ADA_OBJECTS_PATH (which has all the .ALI file in it) also had .O files
as well - my Win95 GNAT installation only has .ALI files in the
ADA_OBJECTS_PATH. Have I forgoten to download an archive full of .O
files? Also is my compilation command correct (gnatmake state.adb)?
Should there be any extra linker options as well?

Thank you all,
Matt.

-- 
Matthew Kennedy
Student of Electronics Engineering, USQ Australia
  " Hey pig, nothing's turning out the way I planned " 
      - Nine Inch Nails

Hell yeah! This just proved it!

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--
-- STATE.ADB
--
-- Program to illustrate a state driven approach to determining the
-- parity of continuous bit stream.
--
-- Program also illustrates how to implement a new package based on 
-- a previously defined generic package.
--

with Ada.Numerics.Discrete_Random;
with Ada.Text_IO; use Ada.Text_IO;


procedure State is

  type Parity is (Odd, Even);
  type Bit is (Set, Clear);

  package Random_Bit is new Ada.Numerics.Discrete_Random(Bit); 
  package Parity_IO is new Ada.Text_IO.Enumeration_IO(Parity);
  package Bit_IO is new Ada.Text_IO.Enumeration_IO(Bit);

  use Random_Bit;
  use Parity_IO;
  use Bit_IO;

  State : Parity := Odd;
  Input : Bit;
  G : Generator;

begin

  for I in 1..10 loop

    Input := Random(G);
    case State is
      when Even => 
        if Input = Set then
          State := Odd;
        end if;
      when Odd =>
        if Input = Set then
          State := Even;
        end if;
    end case;
    Put(Input, Width => 8); 
    Put(State, Width => 5); New_Line;
    delay 1.0;

  end loop;      

end State;
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Re: Trouble getting started with GNAT for Win95/NT

[Stephen Leake]

Matthew Kennedy wrote:
> 
> I've been using GNAT for DOS and now I would like to try out GNAT for
> Win95/NT - I use Win95. However when I install it and try to compile any
> of my creations, I get this error (by the way, I included the specific
> example 'state.adb' as an attachment):

This compiles and links fine on my installation of GNAT 3.09 for Windows
95.

> 2. Environment variables set:
> 
> ADA_INCLUDE_PATH=C:\USR\LOCAL\ADAINCLUDE
> ADA_OBJECTS_PATH=C:\USR\LOCAL\LIB\GCC-LIB\I386-PC-CYGWIN32\2.7.2\ADALIB

I don't have these set; try without?

> PATH=C:\WINDOWS;C:\WINDOWS\COMMAND;C:\DOS;C:\USR\BIN;C:\USR\LOCAL\LIB\GCC-LIB\I386-PC-CYGWIN32\2.7.2\;C:\USR\EMACS-19.34\BIN

You shouldn't need ...\i386-pc-cygwin\2.7.2 in your path, but I don't
know why it would hurt.

> 
> 3. Things I've thought of: In my DOS installation, I noticed that my
> ADA_OBJECTS_PATH (which has all the .ALI file in it) also had .O files
> as well - my Win95 GNAT installation only has .ALI files in the
> ADA_OBJECTS_PATH. Have I forgoten to download an archive full of .O
> files? Also is my compilation command correct (gnatmake state.adb)?

I'm not sure, but I suspect all the .O files are now in libgnat.a, in
the 2.7.2 directory; make sure that's there.

> Thank you all,
> Matt.

You might post to the gnat-chat mailing list (see http://www.gnat.com/
for directions).

-- 
- Stephe