[vtkusers] Installation Problems on Redhat 6.2

[Timothy Perla]

Can someone please lend me their expertise on installing vtk 3.1 on redhat
linux 6.2.
I have downloaded and installed tcl 8.3.1 and tk 8.3.1, as well as mesa 3.0-2
and mesa-devel 3.0-2.  MPI is also running on the system.  
I'm fairly certain my user.make is set up correctly, but about one half hour
into the compile I get the following message:


gmake[1]: Entering directory `/usr/src/redhat/SOURCES/vtk/tcl'
c++ -o vtk tkAppInit.o \
-L. -g -O2  -DVTK_USE_PTHREADS -D_HP_NO_FAST_MACROS -DHAVE_LIMITS_H -DHAVE_UNISTD_H -I. -I./../common -I/usr/src/TclTk/tk8.3.1/generic
-I/usr/local/src/TclTk/tcl8.3.1/generic -DVTK_USE_TKWIDGET -DVTK_USE_OGLR -I/usr/X11R6/include   -I/usr/X11R6/include -I/usr/local/mpich-1.2.0/include -DVTK_USE_MPI -I./../graphics -DVTK_USE_GRAPHICS -I./../imaging -DVTK_USE_IMAGING -I./../patented -DVTK_USE_PATENTED -I./../contrib -DVTK_USE_CONTRIB  -rdynamic   -L/usr/src/redhat/SOURCES/vtk/contrib -lVTKContribTcl -lVTKContrib  -L/usr/src/redhat/SOURCES/vtk/patented -lVTKPatentedTcl -lVTKPatented -L/usr/src/redhat/SOURCES/vtk/imaging -lVTKImagingTcl -lVTKImaging -L/usr/src/redhat/SOURCES/vtk/graphics -lVTKGraphicsTcl -lVTKGraphics -L../common -lVTKCommonTcl -lVTKCommon -L/usr/X11R6/lib -lGL /usr/local/mpich-1.2.0/lib/libmpich.a /usr/local/mpich-1.2.0/lib/libpmpich.a /usr/local/lib/libtk.so /usr/local/lib/libtcl.so -ldl -lpthread \
-L/usr/X11R6/lib -lXext -lXt -lSM -lICE -lX11  -lm
/usr/bin/ld: cannot find -lGL
collect2: ld returned 1 exit status
gmake[1]: *** [vtk] Error 1
gmake[1]: Leaving directory `/usr/src/redhat/SOURCES/vtk/tcl'
gmake: *** [build_tcl] Error 2 


Does this look familiar to anyone?  Thanks.