From: Joe Van Dyk <joevandyk@...>
Date: 2005-07-19T02:35:53+09:00
Subject: Re: Installing ruby-opengl

On 7/18/05, mathew <meta@pobox.com> wrote:
> Joe Van Dyk wrote:
> > I'm on a Ubuntu (essentially Debian) linux system.  What non-ruby
> > packages do I need to install to satisfy the dependencies for the Ruby
> > OpenGL extension?
> >
> > It's looking for the libraries gl, glu, and glut.  I installed glut,
> > but I'm not sure what package would give me the gl and glu libraries.
> 
> When you installed libopengl-ruby, it should have handled all the
> dependencies for you.  libopengl-ruby requires freeglut3, which requires
> xlibmesagl and xlibmesaglu.
> 
> % apt-get install libopengl-ruby
> % gunzip -c /usr/share/doc/libopengl-ruby/examples/teapots.rb.gz | ruby
> 
> I see teapots.

Thanks!  I don't trust debian-style ruby packages any more.. I prefer
to compile it all Ruby related things and put it in one of my local
directories.

But on my system, freeglut3-dev is installed.  And those other
packages (xlibmesa-gl-dev and xlibmesa-glu-dev) are installed too.

joe@big:~/src/opengl-0.32d$ ruby extconf.rb
checking for XAllowDeviceEvents() in -lXi... yes
checking for XMITMiscGetBugMode() in -lXext... yes
checking for XmuAddCloseDisplayHook() in -lXmu... yes
checking for XOpenDisplay() in -lX11... yes
checking for main() in -lGL... yes
checking for main() in -lGLU... no
checking for main() in -lMesaGLU... no
can't create OpenGL module!

joe@big:~/src/opengl-0.32d$ ls /usr/lib/libGL*
/usr/lib/libGL.a                /usr/lib/libGL.so           
/usr/lib/libGLU.a     /usr/lib/libGLU.so.1.3
/usr/lib/libGLcore.so.1         /usr/lib/libGL.so.1         
/usr/lib/libGLU.so          /usr/lib/libGLcore.so.1.0.7174  
/usr/lib/libGL.so.1.0.7174  /usr/lib/libGLU.so.1

Why can't it see /usr/lib/libGLU.so or /usr/lib/libGLU.a?