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  G t k G L E x t

  - OpenGL Extension to GTK

General Information

GtkGLExt is an OpenGL extension to GTK.

This package is composed of GdkGLExt library and GtkGLExt library.
GdkGLExt library provides the GDK objects which support OpenGL
rendering in GTK. GtkGLExt library provides the GtkWidget API add-ons
to make GTK+ widgets OpenGL-capable.

The official web site is:

The official download & development project site is:


GtkGLExt libraries are released under the terms of the GNU Lesser
General Public License (GNU LGPL). While components and programs
included with this release are licensed under the terms of the GNU
General Public License (GNU GPL).

Supported Platforms

Currently GtkGLExt supports

  * UNIX and UNIX-like platforms
      Tested under Linux, FreeBSD, IRIX, and Mac OS X.

  * Win32 platforms
      Tested under Windows XP & 2000 Professional using MinGW/Cygwin


  * GNU C compiler

  * GNU make

  * GTK 2.0 or later (

  * OpenGL or Mesa (

  * GTK-Doc (  [optional]

Multihead Support

Multihead support requires GTK+ 2.1 or above.

If GtkGLExt is already installed, you can check whether installed
GtkGLExt library supports multihead using the following command.

  $ pkg-config --variable=multihead gtkglext-1.0


To build and install GtkGLExt, type follows (use GNU make)

  $ ./configure --prefix=/foo/bar (other options...)
  $ make (or gmake)
  $ make install

To compile example programs, type

  $ make examples

Please read INSTALL or type "./configure --help" for more details.

Configure Options

OpenGL options

  --with-gl-prefix=DIR      OpenGL (Mesa) is installed in DIR [default=auto]
  --with-gl-includedir=DIR  OpenGL (Mesa) headers are in DIR [default=auto]
  --with-gl-libdir=DIR      OpenGL (Mesa) libraries are in DIR [default=auto]

Debug options

  --enable-debug=[no/minimum/yes] turn on debugging [default=minimum]

Window system options

  --with-gdktarget=[x11/win32] select GDK target

Auto-generation files options

  --disable-rebuilds      disable all source autogeneration rules

Documentation options

  --enable-gtk-doc        use gtk-doc to build documentation [default=no]
  --with-html-dir=PATH    path to installed docs

Building the CVS Version of GtkGLExt

GtkGLExt's SourceForge CVS repository can be checked out through
anonymous (pserver) CVS with the following instruction set.
When prompted for a password for anonymous, simply press the Enter key. 

  $ cvs \ \
  $ cvs -z3 \ \
      co -r gtkglext-X-Y gtkglext

  (gtkglext-X-Y is a branch name. e.g. gtkglext-1-0 is 1.0.x branch.)

When you are at work on the CVS version of GtkGLExt, you can use
for generating configure script and Makefiles.

  $ env ACLOCAL_FLAGS='-I /pkgconfig/share/aclocal -I /gtk/share/aclocal' \
        ./ --prefix=${HOME}/gtkglext \
  $ make
  $ make install
  $ make examples

You may have to set ACLOCAL_FLAGS environment variable for some m4
macros used in

The following versions of the GNU autotools are required.

  autoconf 2.54 and above
  automake 1.7.x
  libtool  1.5


Any patches, bug fixes and improvements are always welcome ;-)

  * Home:
  * Mailing List:
  * Bugs: Use the SourceForge bug tracker at
  * Patches: Use the SourceForge patch tracker at