# Makefile for FDK (Felkamp) cone-beam back-projection with MEX/CUDA
# jeff fessler, ryan

# cuda installation location:
#CUDAHOME = /home/software/rhel4/cuda/2.1b/cuda
CUDAHOME = /usr/local/cuda

# matlab-cuda install location
matcuda	= /usr/local/matcuda

# cuda compilation flags:
INCLUDEDIR = -I$(CUDAHOME)/include
INCLUDELIB = -L$(CUDAHOME)/lib -lcudart -lcufft -Wl,-rpath,$(CUDAHOME)/lib
CFLAGS     = -fPIC -D_GNU_SOURCE -pthread -fexceptions
COPTIMFLAGS = -O3
# -funroll-loops -msse2

# common compile flags
aflags = \
	-Dfdk_gpu \
	-DUse_fdk_mex -DMmex
#	-deviceemu

gccflags = \
	-std=c99 \
	-Wall -Wshadow -Wpointer-arith -W -Werror -Wmissing-prototypes \
	-O3
# -ffast-math -fexpensive-optimizations
# -DUse_thread \

# Define installation location for MATLAB.
#export MATLAB = /usr/caen/matlab-2007a
#export MATLAB = /usr/local/matlab/
#export MATLAB = /Applications/MATLAB_R2007b
export MATLAB = /Volumes/a2/pub/matlab/matlab-2008b.app
#MEX           = $(MATLAB)/bin/mex
MEXEXT        = $(shell $(MATLAB)/bin/mexext)

# nvmex is a modified mex script that knows how to handle CUDA .cu files.
NVMEX = $(matcuda)/nvmex -f $(matcuda)/nvopts.sh

# List the mex file(s) to be built.  The .mex extension will be replaced with the
# appropriate extension for this installation of MATLAB, e.g. .mexglx or .mexa64.

goal1 = fdk_mex.$(MEXEXT)

all: $(goal1)
	echo $(goal1)

# c99 code with no matlab or cuda:
fdkd = ../fdk-orig/
defd = ../../def/
fdkh = \
	$(fdkd)cbct,def.h \
	$(fdkd)def,fdk.h \
	$(defd)defs-env.h \
	$(defd)jf,thread1.h

fdkc = \
	$(fdkd)cbct,mask2.c \
	$(fdkd)fdk,st.c \
	$(defd)jf,thread1.c
#	$(fdkd)fdk,ts,t.c

#fdko = $(subst $(fdkd),,$(fdkc:.c=.o))

# c99 code with matlab stuff to be compiled with (nv)mex:
mexc = $(defd)mexarg.c
mexh = $(defd)def,mexarg.h $(defd)jf,mex,def.h

# cuda c code:
mexu = fdk-ts.cu fdk-mex-cuda.cu fdk-ts-t.cu fdk-ts-h.cu
gpuh = jf-cuda.h

incs = -I$(fdkd) -I$(defd)

#
# compile it all together using nvmex:
#
$(goal1): $(mexh) $(mexc) $(mexu) $(fdkh) $(fdkc) $(gpuh)
	cat $(fdkc) $(mexc) > tmp.cu
	$(NVMEX) -o $@ -v \
		CFLAGS='$(aflags) --compiler-options -std=c99' \
		$(incs) $(INCLUDEDIR) $(INCLUDELIB) \
		$(mexu) tmp.cu
	rm tmp.cu
	rm *.linkinfo

# tried to compile c99 parts with gcc and nvcc
# but then the linker did not seem to link them properly:
#	gcc -c $(gccflags) $(incs) $(fdkc)
#	nvcc -c --compiler-options -std=c99 --host-compilation C $(incs) $(fdkc)

clean:
	rm -i $(goal1)