> > On 18.01.2011, at 15:55, Ish wrote: > > >>> On 18.01.2011 09:59, Albrecht Schlosser wrote: > >>>> On 18.01.2011 06:15, Ish wrote: > >>>>> undefined reference to `Fl::gl_visual(int, int*)' > >>>>>=20 > >>>>> I believe that error means its implementation is missing. I = > haven't > >>>>> checked the source yet to confirm that. It isn't virtual from what = > I > >>>>> understand in the source code. > >>>>>=20 > >>>>> using Fltk 1.3 > >>>>=20 > >>>> Which exakt FLTK version (RC?, svn rev.?), OS, compiler, please? > >>>=20 > >>> .... and where do you see this ? When building an own application or > >>> the FLTK library (which part?). Please supply more context. > >>>=20 > >>> I looked at the source code, and it seems that this can happen if > >>> configure doesn't find OpenGL, or if you missed adding the FLTK > >>> GL library (libfltk_gl) to your build. > >>>=20 > >>> Albrecht > >>=20 > >> Hey Albrecht, > >> Thank you for your response. > >> I have the current svn rev, 8289. > >> My OS is linux, ubuntu linux. > >> I am using gcc 4.34 > >> I have installed freeglut. > >> How can I confirm that libfltk_gl has been added or not? > >>=20 > >> I get the error in compiling my application. > >> I see the error when I add the line Fl::gl_visual(FL_RGB); in my = > application right before win.show(). > >=20 > > I also see ligfltk_gl.a (static lib) in my /usr/local/lib directory. > >=20 > > I ran the fractals demo that is in the fltk test dir. And I recieved a = > message Insufficient OpenGL support. Dont know what I am missing. > > You probably do not have the OpenGL headers installed. Check the = > config.log file to see if FLTK found the OpenGL headers. If it did not, = > install them: > > # sudo apt-get install libglu1-mesa-dev > > and call "./configure" again. Does the Fractal demo work now?= >
I had installed libglu1-mesa before and the config.log indicates the opengl headers exist. I ran ./configure again as well, and the problem persisted. _______________________________________________ fltk-bugs mailing list [email protected] http://lists.easysw.com/mailman/listinfo/fltk-bugs
