Added unversal header for OpenGL's GLu library.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.1@5365 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

FL/glu.h

@@ -0,0 +1,60 @@
+//
+// "$Id:$"
+//
+// GLu header file for the Fast Light Tool Kit (FLTK).
+//
+// Copyright 1998-2006 by Bill Spitzak and others.
+//
+// You must include this instead of GL/gl.h to get the Microsoft
+// APIENTRY stuff included (from <windows.h>) prior to the OpenGL
+// header files.
+//
+// This file also provides "missing" OpenGL functions, and
+// gl_start() and gl_finish() to allow OpenGL to be used in any window
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Library General Public
+// License as published by the Free Software Foundation; either
+// version 2 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// Library General Public License for more details.
+//
+// You should have received a copy of the GNU Library General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+// USA.
+//
+// Please report all bugs and problems on the following page:
+//
+//     http://www.fltk.org/str.php
+//
+
+#ifndef FL_glu_H
+#  define FL_glu_H
+
+#  include "Enumerations.H" // for color names
+#  ifdef WIN32
+#    include <windows.h>
+#  endif
+#  ifndef APIENTRY
+#    if defined(__CYGWIN__)
+#      define APIENTRY __attribute__ ((__stdcall__))
+#    else
+#      define APIENTRY
+#    endif
+#  endif
+
+#  ifdef __APPLE__
+#    include <OpenGL/glu.h>
+#  else
+#    include <GL/glu.h>
+#  endif
+
+#endif // !FL_glu_H
+
+//
+// End of "$Id: $".
+//

test/fractals.cxx

@@ -64,11 +64,7 @@ int main(int, char**) {
  */
 
 #include <FL/glut.H>
-#ifdef __APPLE__
-#  include <OpenGL/glu.h>
-#else
-#  include <GL/glu.h> // added for FLTK
-#endif
+#include <FL/glu.H>
 
 #include <stdio.h>
 #include <stdlib.h>

test/fracviewer.cxx

@@ -16,11 +16,7 @@
 
 #if HAVE_GL && HAVE_GL_GLU_H
 #  include <FL/glut.H>
-#  ifdef __APPLE__
-#    include <OpenGL/glu.h>
-#  else
-#    include <GL/glu.h> // added for FLTK
-#  endif
+#  include <FL/glu.H>
 
 #  include <stdio.h>
 #  include <stdlib.h>

test/glpuzzle.cxx

@@ -47,11 +47,7 @@ int main(int, char**) {
 #include <time.h>
 #include <math.h>
 #include <FL/glut.H>	// changed for fltk
-#ifdef __APPLE__
-# include <OpenGL/glu.h>
-#else
-# include <GL/glu.h> // added for fltk
-#endif
+#include <FL/glu.h>     // added for fltk
 #include "trackball.c"	// changed from trackball.h for fltk
 
 #define WIDTH 4