Solution is:
vim opencl/cl/BinomialOptionMultiGPU/CMakeLists.txt
ADDITIONAL_LIBS "rt" "pthread"
vim opencl/cl/BoxFilterGL/CMakeLists.txt
ADDITIONAL_LIBS "rt" "GLU" "X11"
vim opencl/cl/GaussianNoiseGL/CMakeLists.txt
ADDITIONAL_LIBS "rt" "GLU" "X11"
vim opencl/cl/KmeansAutoclustering/CMakeLists.txt
ADDITIONAL_LIBS "rt" "GLU"
vim opencl/cl/MonteCarloAsianMultiGPU/CMakeLists.txt
ADDITIONAL_LIBS "rt" "pthread"
vim opencl/cl/NBody/CMakeLists.txt
ADDITIONAL_LIBS "rt" "GLU"
vim opencl/cl/SimpleGL/CMakeLists.txt
ADDITIONAL_LIBS "rt" "GLU" "X11"
vim opencl/cl/SimpleMultiDevice/CMakeLists.txt
ADDITIONAL_LIBS "rt" "pthread
vim opencl/cpp_cl/URNGNoiseGL/CMakeLists.txt
ADDITIONAL_LIBS "rt" "GLU" "X11"
If someone knows how to build Bolt under linux, let me know.