[Slackbuilds-users] OpenSubdiv linking issue

[Tim Dickson]

hi all, I'm attempting to build OpenSubdiv with optional deps tbb and 
glfw3 and am getting a linking error

[ 33%] Linking CXX executable ../../bin/glViewer
/usr/bin/ld: 
../common/CMakeFiles/examples_common_gl_obj.dir/clDeviceContext.cpp.o: 
in function `CLDeviceContext::Initialize()':
clDeviceContext.cpp:(.text+0x1b3): undefined reference to 
`glXGetCurrentContext'
/usr/bin/ld: clDeviceContext.cpp:(.text+0x1bd): undefined reference to 
`glXGetCurrentDisplay'
collect2: error: ld returned 1 exit status
make[2]: *** [examples/glViewer/CMakeFiles/glViewer.dir/build.make:149: 
bin/glViewer] Error 1
make[1]: *** [CMakeFiles/Makefile2:4055: 
examples/glViewer/CMakeFiles/glViewer.dir/all] Error 2
make: *** [Makefile:146: all] Error 2

any ideas?
thanks, Tim