meda-libs/tiff supports opengl but current package (stable and unstable) does not have the USE flag available Running ebuild configure: checking GL/gl.h usability... yes checking GL/gl.h presence... yes checking for GL/gl.h... yes checking OpenGL/gl.h usability... no checking OpenGL/gl.h presence... no checking for OpenGL/gl.h... no checking windows.h usability... no checking windows.h presence... no checking for windows.h... no checking for OpenGL library... -lGL checking GL/glu.h usability... yes checking GL/glu.h presence... yes checking for GL/glu.h... yes checking OpenGL/glu.h usability... no checking OpenGL/glu.h presence... no checking for OpenGL/glu.h... no checking for OpenGL Utility library... -lGLU checking for varargs GLU tesselator callback function type... no checking GL/glut.h usability... yes checking GL/glut.h presence... yes checking for GL/glut.h... yes checking GLUT/glut.h usability... no checking GLUT/glut.h presence... no checking for GLUT/glut.h... no checking for GLUT library... -lglut . . . OpenGL support: no Running configure manually: checking GL/gl.h usability... yes checking GL/gl.h presence... yes checking for GL/gl.h... yes checking OpenGL/gl.h usability... no checking OpenGL/gl.h presence... no checking for OpenGL/gl.h... no checking windows.h usability... no checking windows.h presence... no checking for windows.h... no checking for OpenGL library... -lGL checking GL/glu.h usability... yes checking GL/glu.h presence... yes checking for GL/glu.h... yes checking OpenGL/glu.h usability... no checking OpenGL/glu.h presence... no checking for OpenGL/glu.h... no checking for OpenGL Utility library... -lGLU checking for varargs GLU tesselator callback function type... no checking GL/glut.h usability... yes checking GL/glut.h presence... yes checking for GL/glut.h... yes checking GLUT/glut.h usability... no checking GLUT/glut.h presence... no checking for GLUT/glut.h... no checking for GLUT library... -lglut . . . OpenGL support: yes