[gtkada] gtkada Digest, Vol 135, Issue 2

Sun Sep 4 06:32:06 CEST 2016

Thanks Pascal,
I finally managed to get configure to work with OpenGL using:
CC='/usr/bin/gcc -g -O0' ./configure --enable-build=Debug --with-GL=GL --with-GL-prefix=/usr/X11 --disable-shared
However, to do this I had to change 
GL_LDOPTS="-L$with_GL_prefix/lib64  to GL_LDOPTS="-L$with_GL_prefix/lib
as my system does not have a lib64 folder in /usr/X11.

make then proceeded OK until:

gcc -c -fPIC -gnat05 -gnatQ -gnatwae -gnatay -g -O0 -Werror=format-security gl_h.adb
In file included from /Ada_Source/gtkada/src/opengl/gtkglarea.c:22:
/ada_source/gtkada/src/opengl/gdkgl.h:74:9: warning: 'GDK_TYPE_GL_CONTEXT' macro redefined [-Wmacro-redefined]
In file included from #define GDK_TYPE_GL_CONTEXT            (gdk_gl_context_get_type())
        ^
/usr/local/Cellar/gtk+3/3.20.6/include/gtk-3.0/gdk/gdkglcontext.h:33:9: note: previous definition is /Ada_Source/gtkada/src/opengl/gdkgl.c here:
23:
/ada_source/gtkada/src/opengl/gdkgl.h:74:9: warning: 'GDK_TYPE_GL_CONTEXT' macro redefined [-Wmacro-redefined]#define GDK_TYPE_GL_CONTEXT             (gdk_gl_context_get_type ())

        ^
#define GDK_TYPE_GL_CONTEXT            (gdk_gl_context_get_type())
        ^
/usr/local/Cellar/gtk+3/3.20.6/include/gtk-3.0/gdk/gdkglcontext.h:33:9: note: previous definition is here
#define GDK_TYPE_GL_CONTEXT             (gdk_gl_context_get_type ())
        ^
gcc -c -fPIC -gnat05 -gnatQ -gnatwae -gnatay -g -O0 -Werror=format-security gdk-gl.adb
/Ada_Source/gtkada/src/opengl/gdkgl.c:270:3: error: use of undeclared identifier 'context'
  context = g_object_new(GDK_TYPE_GL_CONTEXT, NULL);
  ^
/Ada_Source/gtkada/src/opengl/gdkgl.c:271:8: error: use of undeclared identifier 'context'
  if (!context)
       ^
/Ada_Source/gtkada/src/opengl/gdkgl.c:313:10: error: use of undeclared identifier 'context'
  return context;
         ^
1 warning and 3 errors generated.
In file included from /Ada_Source/gtkada/src/opengl/gtkglarea.c:23:
In file included from /ada_source/gtkada/src/opengl/gtkglarea.h:26:
In file included from /usr/local/Cellar/gtk+3/3.20.6/include/gtk-3.0/gtk/gtk.h:286:
/usr/local/Cellar/gtk+3/3.20.6/include/gtk-3.0/gtk/gtk-autocleanups.h:86:31: error: unknown type name 'GtkGLArea'
G_DEFINE_AUTOPTR_CLEANUP_FUNC(GtkGLArea, g_object_unref)
                              ^
/usr/local/Cellar/gtk+3/3.20.6/include/gtk-3.0/gtk/gtk-autocleanups.h:86:31: error: unknown type name 'GtkGLArea'
/Ada_Source/gtkada/src/opengl/gtkglarea.c:75:3: warning: 'gtk_widget_set_double_buffered' is deprecated [-Wdeprecated-declarations]
  gtk_widget_set_double_buffered(GTK_WIDGET(gl_area), FALSE);
  ^
/usr/local/Cellar/gtk+3/3.20.6/include/gtk-3.0/gtk/gtkwidget.h:883:23: note: 'gtk_widget_set_double_buffered' has been explicitly marked deprecated here
void                  gtk_widget_set_double_buffered    (GtkWidget    *widget,
                      ^
2 warnings and 2 errors generated.

   compilation of gdkgl.c failed
   compilation of gtkglarea.c failed

Seems to be a conflict between definitions of GDK_TYPE_GL_CONTEXT in GtkAda and gtk+3?

Regards,
Roger

> On 3 Sep 2016, at 8:00 PM, gtkada-request at lists.adacore.com wrote:
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>   1. Re: Configure doesn't find openGL (Pascal)
> 
> From: Pascal <p.p14 at orange.fr>
> Subject: Re: [gtkada] Configure doesn't find openGL
> Date: 3 September 2016 at 5:36:16 AM AEST
> To: Emmanuel Briot <briot at adacore.com>, Roger Mc Murtrie <rogermc at grapevine.com.au>, gtkada <gtkada at lists.adacore.com>
> 
> 
> Hello,
> 
> That's a while I have built GTKAda with OpenGL support on MacOS.
> 
> I did it with X11 backend:
> $ CPPFLAGS=-I$instxada/include LDFLAGS=-L$instxada/lib ./configure CC='gcc -g -O0' --prefix=$instxada --enable-build=Debug --with-GL=GL --with-GL-prefix=/usr/X11 --disable-shared
> (instxada=your installation directory)
> 
> If you want native MacOS backend, try to add in GTKAda GPR file:
> for Linker_Options use ("-g", "-bind_at_load", "-framework", "/GLUT", "-framework", "/OpenGL", "-lm", "-Wl,-no_pie");
> 
> Keep us informed.
> 
> HTH, Pascal.
> http://blady.pagesperso-orange.fr
> 
> 
>> Le 1 sept. 2016 à 07:51, Emmanuel Briot <briot at adacore.com> a écrit :
>> 
>>> I can't get configure to produce a system that includes openGL.
>>> CC=/usr/bin/gcc ./configure LDFLAGS="-framework OpenGL -L/System/Library/Frameworks/OpenGL.framework/Libraries".
>> 
>> Take a look at the contents of config.log
>> 
>> I am not sure we really support openGL on OSX though (or that gtk+ itself
>> supports it correctly). The GLArea widget has not been updated in a while
>> on the C side.
>> 
>> Emmanuel
>> 
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