Gnat linker error

Gnat linker error

[Danny]

I just got gnat 3.07 (DOS) and I can't get anything to link....
The error message I get is 

c:/djgpp/bin\ld.exe: cannot open -lgnat: No such file or directory
(ENOENT)

The docs I've read say this is either a problem with my environment
parameters, or I don't have djgpp, or I have djgpp and gnat in seperate
directories....
Well, I'm running DJGPP 2.01 and it works fine (for C/C++), I have
gnat and djgpp both installed under c:\djgpp, and I have the following
in my autoexec.bat:

set TMPDIR=C:/djgpp/tmp
set DJGPP=C:/djgpp/djgpp.env
set ADA_INCLUDE_PATH=C:/djgpp/adainc
set ADA_OBJECTS_PATH=C:/djgpp/lib/adalib
set GW-GNAT=C:/djgpp/gw-gnat

I also have C:/djgpp/bin, C:/djgpp/lib, and C:/djgpp/gw-gnat in the
path...

I'm just getting started in Ada, and I'm sorry if this is a lame
question
to ask, but I've read all the docs and FAQs I could find, and I really
am stuck...
					-=- Danny

Re: Gnat linker error

[Jerry van Dijk]

Sorry, I didn't get the original message,

In article <33f8d552.50571683@news.alt.net> andy.cornell@ibm.net writes:

>On Thu, 31 Jul 1997 01:32:18 -0700, Danny <daley@sd.znet.com> wrote:
>
>>I just got gnat 3.07 (DOS) and I can't get anything to link....
>>
>>c:/djgpp/bin\ld.exe: cannot open -lgnat: No such file or directory
>>(ENOENT)

>>set ADA_INCLUDE_PATH=3DC:/djgpp/adainc
>>set ADA_OBJECTS_PATH=3DC:/djgpp/lib/adalib

I do presume that you mean:

>>set ADA_INCLUDE_PATH=C:/djgpp/adainc
>>set ADA_OBJECTS_PATH=C:/djgpp/lib/adalib

In that case, this should work, if GNAT is actually installed at these
locations. Or are you trying to link Ada code to a main C program ?

>>Well, I'm running DJGPP 2.01 and it works fine (for C/C++), I have

Sorry, but GNAT 3.07 for DOS is based upon DJGPP 2.00. You should use
either the full DJGPP v2.00 install or the v2.00 version that comes
with GNAT.

Note that the difference between v2.00 and v2.01 is in some small but
crucial c libary functions.

Jerry.

--

-- Jerry van Dijk | Leiden, Holland
-- Consultant     | Team Ada
-- Ordina Finance | jdijk@acm.org

GNAT linker error

[hosszu.gabor90]

Hello,

I get the following if I try to compile the GtkAda minimal example of GNAT Programming Studio 6.1.0w:

gnatlink /home/myuser/own projects/ada/obj/main.ali -shared-libgcc -g -g -L/usr/lib/x86_64-linux-gnu/ -lgtkada -lgmodule-2.0 -lgtk-x11-2.0 -lgdk-x11-2.0 -latk-1.0 -lgio-2.0 -lpangoft2-1.0 -lpangocairo-1.0 -lgdk_pixbuf-2.0 -lcairo -lfontconfig -lfreetype -lpango-1.0 -lgobject-2.0 -lglib-2.0 -lX11 -lm -o /home/gabre/own projects/ada/obj/main
/usr/lib/x86_64-linux-gnu//libcairo.so: undefined reference to `pixman_filter_create_separable_convolution'
/usr/lib/x86_64-linux-gnu//libcairo.so: undefined reference to `pixman_glyph_cache_remove'
/usr/lib/x86_64-linux-gnu//libcairo.so: undefined reference to `pixman_glyph_cache_freeze'
/usr/lib/x86_64-linux-gnu//libcairo.so: undefined reference to `pixman_glyph_cache_thaw'
/usr/lib/x86_64-linux-gnu//libcairo.so: undefined reference to `pixman_composite_glyphs'
/usr/lib/x86_64-linux-gnu//libcairo.so: undefined reference to `pixman_glyph_cache_lookup'
/usr/lib/x86_64-linux-gnu//libcairo.so: undefined reference to `pixman_glyph_get_mask_format'
/usr/lib/x86_64-linux-gnu//libcairo.so: undefined reference to `pixman_glyph_cache_insert'
/usr/lib/x86_64-linux-gnu//libcairo.so: undefined reference to `pixman_glyph_cache_create'
/usr/lib/x86_64-linux-gnu//libcairo.so: undefined reference to `pixman_composite_glyphs_no_mask'
collect2: ld returned 1 exit status
gnatlink: error when calling /usr/bin/gcc-4.6

The command executed by GPS:

gnatmake -d -P/home/myuser/own projects/ada/AdaTest.gpr -vP2 -j4 -g

The same command works if I try it from a terminal and it also worked in GPS 5.0 (which executed the same command as the newest, 6.1.0w) What can cause this and how can I make GPS work?

Thank you,

BR,
Gábor Hosszú

Re: GNAT linker error

[Simon Wright]

hosszu.gabor90@gmail.com writes:

> gnatmake -d -P/home/myuser/own projects/ada/AdaTest.gpr -vP2 -j4 -g

It's a Bad Idea to have spaces in path names when you are going to pass
them to programs that originated on Unix-based systems (I mean "own
projects").

Re: GNAT linker error

[hosszu.gabor90]

thank you, but I get the same error:

gnatlink /home/myuser/own_projects/ada/obj/main.ali -shared-libgcc -g -g -L/usr/lib/x86_64-linux-gnu/ -lgtkada -lgmodule-2.0 -lgtk-x11-2.0 -lgdk-x11-2.0 -latk-1.0 -lgio-2.0 -lpangoft2-1.0 -lpangocairo-1.0 -lgdk_pixbuf-2.0 -lcairo -lfontconfig -lfreetype -lpango-1.0 -lgobject-2.0 -lglib-2.0 -lX11 -lm -o /home/myuser/own_projects/ada/obj/main
/usr/lib/x86_64-linux-gnu//libcairo.so: undefined reference to `pixman_filter_create_separable_convolution'
/usr/lib/x86_64-linux-gnu//libcairo.so: undefined reference to `pixman_glyph_cache_remove'
/usr/lib/x86_64-linux-gnu//libcairo.so: undefined reference to `pixman_glyph_cache_freeze'
/usr/lib/x86_64-linux-gnu//libcairo.so: undefined reference to `pixman_glyph_cache_thaw'
/usr/lib/x86_64-linux-gnu//libcairo.so: undefined reference to `pixman_composite_glyphs'
/usr/lib/x86_64-linux-gnu//libcairo.so: undefined reference to `pixman_glyph_cache_lookup'
/usr/lib/x86_64-linux-gnu//libcairo.so: undefined reference to `pixman_glyph_get_mask_format'
/usr/lib/x86_64-linux-gnu//libcairo.so: undefined reference to `pixman_glyph_cache_insert'
/usr/lib/x86_64-linux-gnu//libcairo.so: undefined reference to `pixman_glyph_cache_create'
/usr/lib/x86_64-linux-gnu//libcairo.so: undefined reference to `pixman_composite_glyphs_no_mask'
collect2: ld returned 1 exit status
gnatlink: error when calling /usr/bin/gcc-4.6

Re: GNAT linker error

[Simon Clubley]

On 2015-01-25, hosszu.gabor90@gmail.com <hosszu.gabor90@gmail.com> wrote:
> thank you, but I get the same error:
>
> gnatlink /home/myuser/own_projects/ada/obj/main.ali -shared-libgcc -g -g -L/usr/lib/x86_64-linux-gnu/ -lgtkada -lgmodule-2.0 -lgtk-x11-2.0 -lgdk-x11-2.0 -latk-1.0 -lgio-2.0 -lpangoft2-1.0 -lpangocairo-1.0 -lgdk_pixbuf-2.0 -lcairo -lfontconfig -lfreetype -lpango-1.0 -lgobject-2.0 -lglib-2.0 -lX11 -lm -o /home/myuser/own_projects/ada/obj/main

I don't see a -lpixman or -lpixman-1 in that list (IIRC, it's a standalone
library which a quick Google search appears to have confirmed).

Simon.

-- 
Simon Clubley, clubley@remove_me.eisner.decus.org-Earth.UFP
Microsoft: Bringing you 1980s technology to a 21st century world

Re: GNAT linker error

[Dmitry A. Kazakov]

On Sun, 25 Jan 2015 01:45:53 -0800 (PST), hosszu.gabor90@gmail.com wrote:

> I get the following if I try to compile the GtkAda minimal example of GNAT
> Programming Studio 6.1.0w:
[...]
> gnatlink: error when calling /usr/bin/gcc-4.6
> 
> The command executed by GPS:
> 
> gnatmake -d -P/home/myuser/own projects/ada/AdaTest.gpr -vP2 -j4 -g
 
> The same command works if I try it from a terminal and it also worked in
> GPS 5.0 (which executed the same command as the newest, 6.1.0w) What can
> cause this and how can I make GPS work?

Assuming that the project file AdaTest.gpr has "with gtkada.gpr" 
referenced, it is likely a GNAT-GtkAda-GTK configuration problem, because 
it must reference all libraries needed. But it seems that pixman is not 
there. It might be a version mismatch between cairo you have and cairo 
GtkAda expects. If you run

$ gtkada-config

you will see the include paths and libraries GtkAda uses.

Furthermore, you are using a very outdated stuff. The actual version of 
GNAT is 4.9, the actual version of GTK is 3.8.

E.g. gtkada-config output on Fedora 21 (GtkAda3-devel-3.8.2-2.fc21.x86_64):

-aI/usr/include/gtkada -aO/usr/lib64/gtkada/relocatable -largs 
-L/usr/lib64/gtkada/relocatable -lgtkada -Wl,--as-needed -lgtk-3 -lgdk-3 
-lpangocairo-1.0 -lpango-1.0 -latk-1.0 -lcairo-gobject -lcairo 
-lgdk_pixbuf-2.0 -lgio-2.0 -lgobject-2.0 -Wl,--export-dynamic -lgmodule-2.0 
-pthread -lglib-2.0

No pixman as well.

P.S. There was a big incompatibility leap from GTK 2.x to GTK 3.x. If you 
want to learn GTK and GtkAda, better start with 3.8.

-- 
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de

Re: GNAT linker error

[Jeffrey Carter]

On 01/25/2015 02:45 AM, hosszu.gabor90@gmail.com wrote:
> 
> I get the following if I try to compile the GtkAda minimal example of GNAT Programming Studio 6.1.0w:

Since you have a wavefront version of GPS, do you also have a support contract
with AdaCore? If so, you should ask them.

-- 
Jeff Carter
"That was the most fun I've ever had without laughing."
Annie Hall
43

Re: GNAT linker error

[hosszu.gabor90]

gtkada-config output:
-aI/usr/share/ada/adainclude/gtkada -aO/usr/lib/x86_64-linux-gnu/ada/adalib/gtkada -largs -L/usr/lib/x86_64-linux-gnu -lgtkada -L/usr/lib/x86_64-linux-gnu -lgmodule-2.0 -lgtk-x11-2.0 -lgdk-x11-2.0 -latk-1.0 -lgio-2.0 -lpangoft2-1.0 -lpangocairo-1.0 -lgdk_pixbuf-2.0 -lcairo -lfontconfig -lfreetype -lpango-1.0 -lgobject-2.0 -lglib-2.0 -lX11 -lm

Dmitry, you are right, there is a with, more precisely:
with "/usr/share/ada/adainclude/gtkada.gpr";
All the stuff I use is from Linux Mint repo - I mean it is the version that repo provides. Should I really get some newer stuff? If I added it using some packages ot would create dozens of dependency problems - may I compile Gtk, etc... from source? (by the way you re right, I just want to learn Ada + GTK :)

It is strange that using GPS 5 (from Linux Mint repo) everything worked AND doing it manually (just typing it into a terminal) it also worked.

Jeff, I dont have a support contract - the newest GPS can be downloaded from the site of Adacore (free of charge).

Re: GNAT linker error

[hosszu.gabor90]

content of /usr/share/ada/adainclude/gtkada.gpr:

library project gtkada is
   for Library_Name use "gtkada";
   for Library_Kind use "dynamic";
   for Library_Dir use "/usr/lib/x86_64-linux-gnu/";
   for Source_Dirs use ("/usr/share/ada/adainclude/gtkada");
   for Library_ALI_Dir use "/usr/lib/x86_64-linux-gnu/ada/adalib/gtkada";
   for Externally_Built use "True";
   package Linker is
      for Linker_Options use ("-lgmodule-2.0", "-lgtk-x11-2.0", "-lgdk-x11-2.0",
                              "-latk-1.0", "-lgio-2.0", "-lpangoft2-1.0",
                              "-lpangocairo-1.0", "-lgdk_pixbuf-2.0", "-lcairo",
                              "-lfontconfig", "-lfreetype", "-lpango-1.0",
                              "-lgobject-2.0", "-lglib-2.0", "-lX11", "-lm");
   end Linker;
end gtkada;

Re: GNAT linker error

[Ludovic Brenta]

hosszu.gabor90 writes on comp.lang.ada:
> gtkada-config output:
> -aI/usr/share/ada/adainclude/gtkada
> -aO/usr/lib/x86_64-linux-gnu/ada/adalib/gtkada -largs
> -L/usr/lib/x86_64-linux-gnu -lgtkada -L/usr/lib/x86_64-linux-gnu
> -lgmodule-2.0 -lgtk-x11-2.0 -lgdk-x11-2.0 -latk-1.0 -lgio-2.0
> -lpangoft2-1.0 -lpangocairo-1.0 -lgdk_pixbuf-2.0 -lcairo -lfontconfig
> -lfreetype -lpango-1.0 -lgobject-2.0 -lglib-2.0 -lX11 -lm
>
> Dmitry, you are right, there is a with, more precisely:
> with "/usr/share/ada/adainclude/gtkada.gpr";
> All the stuff I use is from Linux Mint repo - I mean it is the version
> that repo provides. Should I really get some newer stuff? If I added
> it using some packages ot would create dozens of dependency problems -
> may I compile Gtk, etc... from source? (by the way you re right, I
> just want to learn Ada + GTK :)
>
> It is strange that using GPS 5 (from Linux Mint repo) everything
> worked AND doing it manually (just typing it into a terminal) it also
> worked.
>
> Jeff, I dont have a support contract - the newest GPS can be
> downloaded from the site of Adacore (free of charge).

The problem appears to be caused neither by your use of the Mint
packages (even though they are outdated compared to the ones in Debian
testing) nor by GPS.  The file /usr/share/ada/adainclude/gtkada.gpr,
which I wrote, is not at fault either since not all GtkAda programs will
require libpixman-1.

It looks like, in addition to GtkAda and the listed libraries, this
particular program also requires pixman.  Therefore you need to:

aptitude install libpixman-1-dev

and add the following to your project file:

with "gtkada.gpr";
project AdaTest is
   -- existing stuff here
   package Linker is
      for Linker_Options use ("-lpixman-1");
   end Linker;
end AdaTest;

Or, alternatively, call gnatmake like this:

gnatmake -d "-P/home/myuser/own projects/ada/AdaTest.gpr" -vP2 -j4 -g -largs -lpixman-1

Hope this helps

--
Ludovic Brenta.

Re: GNAT linker error

[hosszu.gabor90]

Thank you, adding -lpixman-1 made it work. But please explain me how it can happen that:
- with GPS 5 it worked without lib pixman linker flag
- "manually" it also worked
- both of these mean execution of the following command: (I have compared them)
gnatmake -d -P/home/myuser/own_projects/ada/AdaTest.gpr -vP2 -j4 -g
So everything depends only on the project files (AdaTest.gpr and gtkada.gpr) which do not contain anything related to pixman.

And the program is this simple GtkAda example:

with Gtk.Box;         use Gtk.Box;
with Gtk.Button;      use Gtk.Button;
with Gtk.Label;       use Gtk.Label;
with Gtk.Widget;      use Gtk.Widget;
with Gtk.Main;
with Gtk.Window;      use Gtk.Window;
with Gtkada.Handlers; use Gtkada.Handlers;
with Ada.Text_IO;
with Glib; use Glib;
procedure Main is
   Win   : Gtk_Window;
   Label : Gtk_Label;
   Box   : Gtk_Vbox;
begin
   Gtk.Main.Set_Locale;
   Gtk.Main.Init;
   Gtk_New (Win);
   Win.Set_Default_Size (500, 500);
   Gtk_New_Vbox (Box);
   Gtk_New (Label, "Hello world.");
   Win.Add (Label);
   Win.Show_All;
   Gtk.Main.Main;
end Main;

Re: GNAT linker error

[Dmitry A. Kazakov]

On Sun, 25 Jan 2015 15:15:32 -0800 (PST), hosszu.gabor90@gmail.com wrote:

> Thank you, adding -lpixman-1 made it work. But please explain me how it can happen that:
> - with GPS 5 it worked without lib pixman linker flag
> - "manually" it also worked
> - both of these mean execution of the following command: (I have compared them)
> gnatmake -d -P/home/myuser/own_projects/ada/AdaTest.gpr -vP2 -j4 -g
> So everything depends only on the project files (AdaTest.gpr and gtkada.gpr) which do not contain anything related to pixman.
> 
> And the program is this simple GtkAda example:
> 
> with Gtk.Box;         use Gtk.Box;
> with Gtk.Button;      use Gtk.Button;
> with Gtk.Label;       use Gtk.Label;
> with Gtk.Widget;      use Gtk.Widget;
> with Gtk.Main;
> with Gtk.Window;      use Gtk.Window;
> with Gtkada.Handlers; use Gtkada.Handlers;
> with Ada.Text_IO;
> with Glib; use Glib;
> procedure Main is
>    Win   : Gtk_Window;
>    Label : Gtk_Label;
>    Box   : Gtk_Vbox;
> begin
>    Gtk.Main.Set_Locale;
>    Gtk.Main.Init;
>    Gtk_New (Win);
>    Win.Set_Default_Size (500, 500);
>    Gtk_New_Vbox (Box);
>    Gtk_New (Label, "Hello world.");
>    Win.Add (Label);
>    Win.Show_All;
>    Gtk.Main.Main;
> end Main;

Pixman is related to cairo and cairo since GTK 3.x is the drawing engine
behind the GTK. Prior to 3.x, in 2.x it was custom GDK drawing used for
this. I don't remember if GDK drawing ever used pixman. So I suspect you
may have versions mismatch.

BTW, the example is incomplete. It does not have the destroy handler
attached needed to jump out of the events loop when you close the
application window through the window manager. The effect should be that
the window will be closed but the process still running.

The test refers to Gtkada.Handlers, but does not use it to connect to the
Destroy event. OK, it could not anyway due to accessibility issues. The
handler must be declared in a package at the library level. It would not
compile if you place it in the procedure Main.

-- 
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de