diff --git a/common/fltk/FL/gl2opengl.h b/common/fltk/FL/gl2opengl.h
new file mode 100644
index 0000000..b89614e
--- /dev/null
+++ b/common/fltk/FL/gl2opengl.h
@@ -0,0 +1,35 @@
+/*	gl.h
+
+	GL to OpenGL translator.
+	If you include this, you might be able to port old GL programs.
+	There are also much better emulators available on the net.
+
+*/
+
+#include <FL/gl.h>
+#include "gl_draw.H"
+
+inline void clear() {glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);}
+#define RGBcolor(r,g,b) glColor3ub(r,g,b)
+#define bgnline() glBegin(GL_LINE_STRIP)
+#define bgnpolygon() glBegin(GL_POLYGON)
+#define bgnclosedline() glBegin(GL_LINE_LOOP)
+#define endline() glEnd()
+#define endpolygon() glEnd()
+#define endclosedline() glEnd()
+#define v2f(v) glVertex2fv(v)
+#define v2s(v) glVertex2sv(v)
+#define cmov(x,y,z) glRasterPos3f(x,y,z)
+#define charstr(s) gl_draw(s)
+#define fmprstr(s) gl_draw(s)
+typedef float Matrix[4][4];
+inline void pushmatrix() {glPushMatrix();}
+inline void popmatrix() {glPopMatrix();}
+inline void multmatrix(Matrix m) {glMultMatrixf((float *)m);}
+inline void color(int n) {glIndexi(n);}
+inline void rect(int x,int y,int r,int t) {gl_rect(x,y,r-x,t-y);}
+inline void rectf(int x,int y,int r,int t) {glRectf(x,y,r+1,t+1);}
+inline void recti(int x,int y,int r,int t) {gl_rect(x,y,r-x,t-y);}
+inline void rectfi(int x,int y,int r,int t) {glRecti(x,y,r+1,t+1);}
+inline void rects(int x,int y,int r,int t) {gl_rect(x,y,r-x,t-y);}
+inline void rectfs(int x,int y,int r,int t) {glRects(x,y,r+1,t+1);}