#
# sample Makefile for nvcc (CUDA compiler) with OpenCL (CUDA implementation)
#
# usage examples:
#   "make hello" to compile "hello.c" to "hello" 
#
# note that you must first set up to include CUDA files 
#   (command "module load cuda-latest")
#
# note also that nvcc (the CUDA compiler) seems to work better with .cpp
#   files than with .c files (even if the .cpp file is straight C) so
#   this makefile makes a temporary copy of source.

OPT = -O3
CC = nvcc

EXTRAS = # can be used to add additional user-specified options, e.g. -fopenmp

#WNO_FLAGS=-Wno-long-long
#IGNORE_HEADER_WARNINGS=-isystem $(CUDA_HOME)/include
#IGNORE_WARN=$(IGNORE_HEADER_WARNINGS) $(WNO_FLAGS)
CUDA_CFLAGS=-Xcompiler "$(CFLAGS) $(IGNORE_WARN)"
CFLAGS=$(OPT) $(IGNORE_WARN) $(EXTRAS)
OPENCL_LDFLAGS= -lOpenCL -L$(CUDA_HOME)/lib64 -L/usr/lib64/nvidia/ 
LDFLAGS = $(OPENCL_LDFLAGS) -lm

%: %.c
	cp $< temp-$<.cpp
	$(CC) -o $@ -Xcompiler "$(CFLAGS)" temp-$<.cpp $(LDFLAGS) 
	rm temp-$<.cpp
%.o: %.c
	$(CC) -c -Xcompiler "$(CFLAGS)" $(LDFLAGS) $< $(LDFLAGS)