hi i am still trying to compile opengl on OSX 10.3.9 My last attempt was with rbogl-0.32f.tar.gz as before i was getting an error as it couldnt find glu.h I created a folder called 'glu' and included there glu.h, glut.h and glext.h then the installation was ok but now i get this error irb(main):001:0> require "opengl" dyld: ruby Undefined symbols: _gluBeginCurve _gluBeginPolygon _gluBeginSurface _gluBeginTrim _gluBuild2DMipmaps _gluCylinder _gluDeleteNurbsRenderer _gluDeleteQuadric _gluDeleteTess _gluDisk _gluEndCurve _gluEndPolygon _gluEndSurface _gluEndTrim _gluErrorString _gluGetNurbsProperty _gluGetString _gluGetTessProperty _gluLookAt _gluNewNurbsRenderer _gluNewQuadric _gluNewTess _gluNextContour _gluNurbsCurve _gluNurbsProperty _gluNurbsSurface _gluOrtho2D _gluPartialDisk _gluPerspective _gluPickMatrix _gluProject _gluPwlCurve _gluQuadricDrawStyle _gluQuadricNormals _gluQuadricOrientation _gluQuadricTexture _gluScaleImage _gluSphere _gluTessBeginContour _gluTessBeginPolygon _gluTessCallback _gluTessEndContour _gluTessEndPolygon _gluTessNormal _gluTessProperty _gluTessVertex _gluUnProject Trace/BPT trap ################# I tried several timer with the opengl-0.32f.tar.gz unsuccesfully, getting always the same error in line 35 of extconf.rb $CFLAGS += " -I. -I/System/Library/Frameworks/OpenGL.framework/Headers it doesnt like the += this was the error Ordenador-de-r2d2:/Volumes/data/software/ruby/opengl-0.32f r2d2$ ruby extconf.rb extconf.rb:36: undefined method `+' for nil (NameError) I find this point weird as far as i understand (just two weeks doing ruby) if i do $Whatever += 'anything' without a previous decalration of $Whatever = "" would give me an error. Then i assume that the extconf.rb script is wrong, it should either be = or $CFLAGS should have some string value before it gets to the += So I modified the script to be = instead of += like in the other platforms lines above and the extconf.rb script goers ok, then i do make and again is ok. I do sudo make install and again there is no problem so far. again i try to require 'opengl' getting same error i especify on the top of the mail: dyld: ruby Undefined symbols: blah blah .. etc... Now i am trying to uninstall the version i have installed but 'make uninstall' doesnt work. any hints about how to uninstall it? I am not very good at unix compiling and stuff like this as you can see :) It would be very helpful i think, if some OSX opengl ruby user could describe the process of compiling it or point to some link where this is described. thanks -- enrike