Interesting problem, and would like explanation

coz_ · 01-07-09, 07:09 PM

Hey guys.. noticed something interesting and would like to know the reasons...ubuntu..nvidia..cairo dock... I install the nvidia driver manually for ubuntu ...if , after installing the nvidia driver, I try to compile cairo dock svn which has opengl implimentation, it fails the compile with an error of `error: implicit declaration of function 'glActiveTexture'
However if i then reinstall the mesa packages , it compiles fine.. if I then install another nvidia driver the previously compiled cairo dock works but if i then try to compile that same revision of cairo dock on the new driver installation it fails..untill i re install mesa packages.
An explanation would be well appreciated!

coz

gasto · 01-07-09, 07:29 PM

Lucky you, got at least your Nvidia graphics card working...

**AaronP** · 01-07-09, 08:03 PM

For anything above OpenGL 1.1, you need to define GL_GLEXT_PROTOTYPES if you want glext.h to define function prototypes as well as typedefs. Otherwise, you need to use the typedefs and glXGetProcAddress and decide at runtime whether that feature is supported for a given GL implementation.

01-07-09, 07:09 PM	#1
coz_ Registered User Join Date: Jan 2008 Posts: 13	Interesting problem, and would like explanation Hey guys.. noticed something interesting and would like to know the reasons...ubuntu..nvidia..cairo dock... I install the nvidia driver manually for ubuntu ...if , after installing the nvidia driver, I try to compile cairo dock svn which has opengl implimentation, it fails the compile with an error of `error: implicit declaration of function 'glActiveTexture' However if i then reinstall the mesa packages , it compiles fine.. if I then install another nvidia driver the previously compiled cairo dock works but if i then try to compile that same revision of cairo dock on the new driver installation it fails..untill i re install mesa packages. An explanation would be well appreciated! coz

01-07-09, 07:29 PM	#2
gasto Registered User Join Date: Jan 2009 Posts: 3	Re: Interesting problem, and would like explanation Lucky you, got at least your Nvidia graphics card working...

01-07-09, 08:03 PM	#3
AaronP NVIDIA Corporation Join Date: Mar 2005 Posts: 2,487	Re: Interesting problem, and would like explanation For anything above OpenGL 1.1, you need to define GL_GLEXT_PROTOTYPES if you want glext.h to define function prototypes as well as typedefs. Otherwise, you need to use the typedefs and glXGetProcAddress and decide at runtime whether that feature is supported for a given GL implementation.