Re: Ada OpenGL bindings, how to use them with gnat ?

[David Holm <david@realityrift.com>]

On 17 Jul 2003 13:42:22 -0700
fab102@bluemail.ch (Karim) wrote:

> Hello 
> 
> 1.There exist no command for gnatgcc on my system , but I  have
> installed the gnatport for FreeBSD  on it. Can you help me with this ?

Change ADA_CC in Make.conf to adagcc, gnatgcc is the name used by gentoo linux. FreeBSD for some
reason chose adagcc.

> 2.I cannot imagine how to use the bindings, does they works like
> libraries ?

All you really have to do is "with" whatever you need (i.e. OpenGL and OpenGL.GLUT) and then add
adaopengl-0.10/adaopengl to your includepath (-I/usr/home/karim/ada/adaopengl-0.10/adaopengl)

> 3.You are right. It seems that it is not that hard to write a simple
> ada opengl application to open a window, but how can I compile it with
> gnat ??  (What is the exact console command to compile a basic opengl
> or glut source ??)

gnatmake your_main_procedure -I/usr/home/karim/ada/adaopengl-0.10/adaopengl \
        -largs -L/usr/X11R6/lib -lX11-lXext-lGL-lGLU -lglut

> 4. Is there a lib to load images (textures) with ada ?? (I don`t think
> that mesa/GL are shipping one.)

I haven't really looked. But loading tga (targa) is very easy, check www.wotsit.org for the
specification.

I'm considering going through the whole mess of using auto* or maybe pmk (pmk.sf.net) for the
next release or the release after to make it easier for new users and windiots (who don't seem
to have a clue about using a console) to compile the thing.

//David Holm