diff --git a/GNUmakefile b/GNUmakefile
index 343874d..14f118d 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -68,7 +68,7 @@ L_CFLAGS += -DUSE_X11
 L_OBJS += src/backend/x11.o
 L_LIBS += -lX11 -lXrender -lXext
 
-GL = -lGL
+GL = -lGL -lGLU
 
 E_LIBS += -lm
 
@@ -80,7 +80,7 @@ L_LDFLAGS += -Wl,--out-implib,src/libMw.lib -static-libgcc
 L_OBJS += src/backend/gdi.o
 L_LIBS += -lgdi32
 
-GL = -lopengl32
+GL = -lopengl32 -lglu32
 
 SO = .dll
 EXEC = .exe
@@ -90,7 +90,7 @@ EXAMPLES = examples/example$(EXEC) examples/rotate$(EXEC) examples/image$(EXEC)
 
 ifeq ($(OPENGL),1)
 L_OBJS += src/widget/opengl.o
-EXAMPLES += examples/gltriangle$(EXEC) examples/glgears$(EXEC) examples/glboing$(EXEC)
+EXAMPLES += examples/gltriangle$(EXEC) examples/glgears$(EXEC) examples/glboing$(EXEC) examples/glcube$(EXEC)
 endif
 
 ifeq ($(VULKAN),1)
diff --git a/examples/glcube.c b/examples/glcube.c
new file mode 100644
index 0000000..a82b89a
--- /dev/null
+++ b/examples/glcube.c
@@ -0,0 +1,74 @@
+/* $Id$ */
+#define TITLE "cube"
+#include "oldglut.c"
+
+#include <GL/glu.h>
+
+static double deg = 0;
+
+static void draw(void) {
+	int i;
+	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+	glPushMatrix();
+	glRotatef(deg, 1, 0, 0);
+	glRotatef(deg, 0, 1, 0);
+	glRotatef(deg, 0, 0, 1);
+
+	for(i = 0; i < 6; i++) {
+		if(i == 0) glColor3f(1, 0, 0);
+		if(i == 1) glColor3f(0, 1, 0);
+		if(i == 2) glColor3f(1, 1, 0);
+		if(i == 3) glColor3f(0, 0, 1);
+		if(i == 4) glColor3f(1, 0, 1);
+		if(i == 5) glColor3f(0, 1, 1);
+
+		glBegin(GL_QUADS);
+		glNormal3f(0, 1, 0);
+		glVertex3f(-1, 1, -1);
+		glVertex3f(-1, 1, 1);
+		glVertex3f(1, 1, 1);
+		glVertex3f(1, 1, -1);
+		glEnd();
+
+		if(i < 3) glRotatef(90, 0, 0, 1);
+		if(i == 3) glRotatef(90, 1, 0, 0);
+		if(i == 4) glRotatef(180, 0, 0, 1);
+	}
+	glPopMatrix();
+}
+
+static void idle(void) {
+	deg += 1.0;
+}
+
+static void reshape(int width, int height) {
+	GLfloat lpos[4];
+
+	lpos[0] = 2;
+	lpos[1] = 2;
+	lpos[2] = 2;
+	lpos[3] = 0;
+
+	glViewport(0, 0, width, height);
+
+	glMatrixMode(GL_PROJECTION);
+	glLoadIdentity();
+	gluPerspective(60, (double)width / height, 1, 100);
+
+	glMatrixMode(GL_MODELVIEW);
+	glLoadIdentity();
+	gluLookAt(2, 2, 2, 0, 0, 0, 0, 1, 0);
+
+	glLightfv(GL_LIGHT0, GL_POSITION, lpos);
+}
+
+static void init(void) {
+	glEnable(GL_DEPTH_TEST);
+	glEnable(GL_LIGHTING);
+	glEnable(GL_LIGHT0);
+	glEnable(GL_COLOR_MATERIAL);
+	glEnable(GL_CULL_FACE);
+
+	glColorMaterial(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE);
+}