dead code elimination

src/glext.nim

@@ -17,8 +17,11 @@ when defined(windows):
   {.push, callconv: stdcall.}
 else:
   {.push, callconv: cdecl.}
+
 import opengl
 
+{.deadCodeElim: on.}
+
 type
   GLcharARB* = Char
   TGLcharARB* = GLcharARB

src/glu.nim

@@ -10,6 +10,8 @@
 
 import opengl
 
+{.deadCodeElim: on.}
+
 when defined(windows):
   {.push, callconv: stdcall.}
 else:

src/glut.nim

@@ -17,6 +17,8 @@
 
 import opengl
 
+{.deadCodeElim: on.}
+
 when defined(windows):
   const
     dllname = "glut32.dll"

src/glx.nim

@@ -25,6 +25,8 @@
 
 import X, XLib, XUtil, opengl
 
+{.deadCodeElim: on.}
+
 when defined(windows):
   const
     dllname = "GL.dll"

src/wingl.nim

@@ -1,5 +1,7 @@
 import opengl, windows
 
+{.deadCodeElim: on.}
+
 proc wglGetExtensionsStringARB*(hdc: HDC): cstring{.dynlib: dllname,
     importc: "wglGetExtensionsStringARB".}
 const