##
# If STAN_OPENCL is defined
##
# Adds the following to CXXFLAGS
# link to OpenCL
# Defines:
#  STAN_OPENCL
# OPENCL_DEVICE_ID - The ID of the GPU (default: 0)
# OPENCL_PLATFORM_ID The ID of the OpenCL platform (default: 0)
# Both IDs can be found through installing and calling clinfo
##
ifdef STAN_OPENCL
  CXXFLAGS += -isystem $(OPENCL) -DSTAN_OPENCL -DOPENCL_DEVICE_ID=$(OPENCL_DEVICE_ID) -DOPENCL_PLATFORM_ID=$(OPENCL_PLATFORM_ID)
  LDFLAGS += $(LDFLAGS_OPENCL)
endif
