This one will actually build on other people's machines...

please see INSTALL file for instructions on how to build the Nuke
example (posted here as well):

Make a build directory, cd into it:

mkdir -p build
cd build

Configure cmake, pointing at your nuke include dir:

cmake -D NUKE:FILEPATH=/usr/local/nuke6.0.3/include/ -D CMAKE_BUILD_TYPE=Release ../

Build all targets:

make

You will now see the built .so files:

ls

Set the environment variable pointing at which configuration to use:
(Point this to your install)

setenv OCS /net/homedirs/jeremys/git/Color/configs/spivfx/config.ocs

Launch nuke (the same version you used for the include files), then
load the plugin (this can also go in your init.py)

nuke.load('/net/homedirs/jeremys/git/Color//build/libNukeColorSpaceConversion.so')
nuke.menu('Nodes').addMenu('Color').addCommand('OCSColorSpaceConversion', 'nuke.createNode("OCSColorSpaceConversion")')

Connect an image to the OCSColorSpaceConversion node.
Our 'spivfx' config has only a few example colorspaces, this one
demonstrates a conversion between scene linear and a film-log
colorspace.