Re: [Foxgui-users]GL link problem

[Jeroen v. d. Z. <je...@fo...>]

On Thursday 21 April 2005 01:40 pm, Joel VanderWerf wrote:
> 
> I'm doing a fresh install of Mandrake 10.1 and Fox, and can't get Fox to 
> recognize the GL libs.
> 
> I tried both configure without args and:
> 
> ./configure --x-includes=/usr/X11R6/include/ --x-libraries=/usr/X11R6/lib
> 
> since this is where the includes and libs are.
> 
> In the latter case, I get:
> 
> ...
> checking for OpenGL support...
> checking GL/gl.h usability... yes
> checking GL/gl.h presence... yes
> checking for GL/gl.h... yes
> checking GL/glu.h usability... no
> checking GL/glu.h presence... no
> checking for GL/glu.h... no
> ...
> 
> 
> But during the compile:
> 
> g++ -DHAVE_XSHM_H=1 -D_GNU_SOURCE -DHAVE_JPEG_H=1 -DHAVE_PNG_H=1 
> -DHAVE_ZLIB_H=1 -DHAVE_XCURSOR_H=1 -Wall -W -Woverloaded-virtual 
> -Wformat -DHAVE_GL_H=1 -DSUN_OGL_NO_VERTEX_MACROS 
> -DHPOGL_SUPPRESS_FAST_API -I/usr/X11R6/include/ -o reswrap reswrap.o 
> -ldl -lpthread /usr/lib/libjpeg.so -lpng -lz -lm -lGL
> /usr/bin/ld: cannot find -lGL
> 
> 
> Now, I got around this by adding some symlinks to /usr/lib:
> 
> libGL.so -> /usr/X11R6/lib/libGL.so*
> libGLU.so.1 -> /usr/X11R6/lib/libGLU.so.1*
> libGLw.a -> /usr/X11R6/lib/libGLw.a
> libGLw.so -> /usr/X11R6/lib/libGLw.so*
> 
> 
> Now it gets much farther, but when linking FXGLCone.o:
> 
> FXGLCone.cpp: In member function `virtual void 
> FX::FXGLCone::drawshape(FX::FXGLViewer*)':
> FXGLCone.cpp:109: error: `GLUquadric' undeclared (first use this function)
> FXGLCone.cpp:109: error: (Each undeclared identifier is reported only 
> once for each function it appears in.)
> FXGLCone.cpp:109: error: `quad' undeclared (first use this function)
> FXGLCone.cpp:109: error: `gluNewQuadric' undeclared (first use this 
> function)
> FXGLCone.cpp:110: error: `GLU_FILL' undeclared (first use this function)
> FXGLCone.cpp:110: error: `gluQuadricDrawStyle' undeclared (first use 
> this function)
> FXGLCone.cpp:117: error: `gluCylinder' undeclared (first use this function)
> FXGLCone.cpp:118: error: `GLU_INSIDE' undeclared (first use this function)
> FXGLCone.cpp:118: error: `gluQuadricOrientation' undeclared (first use 
> this function)
> FXGLCone.cpp:119: error: `gluDisk' undeclared (first use this function)
> FXGLCone.cpp:120: error: `gluDeleteQuadric' undeclared (first use this 
> function)
> make[1]: *** [FXGLCone.lo] Error 1
> make[1]: Leaving directory `/home/vjoel/src/fox-1.2.16/src'
> make: *** [all-recursive] Error 1
> 
> 
> Any suggestions?

The problem is that GLU and GL are not in the same places; I've
solved by by symlinking GLU to the same directory where GL is found [usr/lib].

Another approach is possible and that is to set two environment variables
for the library location override:

export LIBGLU=....
export LIBGL=...

[You need to do this prior to running configure].


This is one thing where a LSB adherence would have been nice.....


Hope this helps,

		Jeroen