openGL extensions

[Chaitra CJ]

I am using DevC++ 4.0.0 version I was trying to use glEnable(GL_RESCALE_NORMAL) but the compiler threw an error saying undefined reference to GL_RESCALE_NORMAL. What should i include for this???? I tried including glext.h but of no use compiler threw an error saying no such file or directory found...Please help me with this..

[ZbuffeR]

Get it here : www.opengl.org/registry/api/glext.h

2 hints :
1) DevC++ is not maintained since quite some time. Try Code::blocks for a similar but up-to-date IDE.
2) use GLEW to simplify yourself the usage of OpenGL for anything newer than GL 1.1