Makefile for CUDA and C

I am working on a project that uses .c and .cu files. The original package was written entirely in C and had its own Makefile (it was perfectly working). I added the .cu file to the project and now I want to modify the Makefile so that it compiles everything together. Here is my attempt: ``` CC = nvcc SOURCEDIR = ../sourcedir EXE = it #C_SOURCES = $(wildcard $(SOURCEDIR)/*.c) #CU_SOURCES = $(wildcard $(SOURCEDIR)/*.cu) SOURCES = $(SOURCEDIR)/it.c \ $(SOURCEDIR)/em.c \ $(SOURCEDIR)/art.c \ $(SOURCEDIR)/cg.c \ $(SOURCEDIR)/amatrix.c \ $(SOURCEDIR)/itreadargs.c \ $(SOURCEDIR)/sparse.c \ $(SOURCEDIR)/misc.c \ $(SOURCEDIR)/eval.c \ $(SOURCEDIR)/imgtools.c \ $(SOURCEDIR)/calc.c \ $(SOURCEDIR)/egif_lib.c \ $(SOURCEDIR)/dgif_lib.c \ $(SOURCEDIR)/gif_err.c \ $(SOURCEDIR)/gif_hash.c CU_SOURCES = $(SOURCEDIR)/cg_cuda.cu H_FILES = $(wildcard $(IDIR)/*.h) IDIR = -I../include OBJS = $(SOURCES:.c=.o) CU_OBJS = $(CU_SOURCES:.cu=.o) CFLAGS = -O3 #-finline-functions -Winline -Wall -falign-loops=2 -falign-jumps=2 -falign-functions=2 -Wstrict-prototypes NVCCFLAGS = -arch=sm_20 #CFLAGS = -g -Wstrict-prototypes -Winline -Wall LFLAGS = -lm $(EXE) : $(OBJS) $(CU_OBJS) $(CC) $(CFLAGS) $(NVCCFLAGS) -o $@ $? $(SOURCEDIR)/%.o : $(SOURCEDIR)/%.c $(H_FILES) $(CC) $(CFLAGS) $(IDIR) -c -o $@ $< $(SOURCEDIR)/%.o : $(SOURCEDIR)/%.cu $(H_FILES) $(CC) $(NVCCFLAGS) $(IDIR) -c -o $@ $< clean: rm -f $(OBJS) $(EXE) ``` The structure of the project is as follows: - Project - include - sourcedir - it other folders where include has all the .h files and sourcedir has the .c and the .cu files (there is only one .cu file); it has the Makefile. The problem with my Makefile is that when I do make in the it folder I get a bunch of errors that tell me that the file that has the main() function (it.c in sourcedir folder) is not getting linked to any of the functions from other libraries. The same holds for my .cu file. Can you please give me some hints on what might be wrong with my Makefile? I used as a reference the following Stackoverflow post: makefile for C++/CUDA project Thank you for your help, Vlad EDIT: Here is the original Makefile, the one that worked on the .c files. Can you help me with what I need to add in order for the .cu file to be compiled along with the others? Thanks again. ``` CC = gcc SOURCEDIR = ../sourcedir EXE = it SOURCES = $(SOURCEDIR)/it.c \ $(SOURCEDIR)/em.c \ $(SOURCEDIR)/art.c \ $(SOURCEDIR)/cg.c \ $(SOURCEDIR)/amatrix.c \ $(SOURCEDIR)/itreadargs.c \ $(SOURCEDIR)/sparse.c \ $(SOURCEDIR)/misc.c \ $(SOURCEDIR)/eval.c \ $(SOURCEDIR)/imgtools.c \ $(SOURCEDIR)/calc.c \ $(SOURCEDIR)/egif_lib.c \ $(SOURCEDIR)/dgif_lib.c \ $(SOURCEDIR)/gif_err.c \ $(SOURCEDIR)/gif_hash.c IDIR = -I../include OBJS = $(SOURCES:.c=.o) CFLAGS = -O3 -finline-functions -Winline -Wall -falign-loops=2 -falign-jumps=2 -falign-functions=2 -Wstrict-prototypes #CFLAGS = -g -Wstrict-prototypes -Winline -Wall LFLAGS = -lm $(EXE) : $(OBJS) $(CC) $(CFLAGS) -o $(EXE) $(OBJS) $(LFLAGS) %.o : %.c $(CC) -c $(IDIR) $(CFLAGS) $< -o $@ clean: rm -f $(OBJS) $(EXE) ``` LATER EDIT: I changed the Makefile some more, cleaned it a bit, and now I only get a few errors which are related to the fact that the .cu is not getting linked to the .c files and vice-versa. ``` CC := gcc SOURCEDIR := ../sourcedir EXE := it SOURCES := $(SOURCEDIR)/it.c \ $(SOURCEDIR)/em.c \ $(SOURCEDIR)/art.c \ $(SOURCEDIR)/cg.c \ $(SOURCEDIR)/amatrix.c \ $(SOURCEDIR)/itreadargs.c \ $(SOURCEDIR)/sparse.c \ $(SOURCEDIR)/misc.c \ $(SOURCEDIR)/eval.c \ $(SOURCEDIR)/imgtools.c \ $(SOURCEDIR)/calc.c \ $(SOURCEDIR)/egif_lib.c \ $(SOURCEDIR)/dgif_lib.c \ $(SOURCEDIR)/gif_err.c \ $(SOURCEDIR)/gif_hash.c CU_SOURCES := $(SOURCEDIR)/cg_cuda.cu IDIR := ../include INCLUDES := -I../include H_FILES := $(IDIR)/analyze.h \ $(IDIR)/calc.h \ $(IDIR)/eval.h \ $(IDIR)/gif_hash.h \ $(IDIR)/gif_lib.h \ $(IDIR)/imgtools.h \ $(IDIR)/iradon.h \ $(IDIR)/iradoninc.h \ $(IDIR)/it.h \ $(IDIR)/itini.h \ $(IDIR)/misc.h \ $(IDIR)/sparse.h CFLAGS := -g -O3 NVCCFLAGS := -g -G -O3 -arch=sm_20 LDFLAGS := -lGL -lGLU -lglut -lpthread -lcuda HOST_OBJ := $(SOURCES:.c=.c.o) DEVICE_OBJ := $(CU_SOURCES:.cu=.cu.o) %.c.o : %.c $(HFILES) $(CC) -c $(INCLUDES) $(CFLAGS) $< -o $@ %.cu.o : %.cu $(H_FILES) nvcc -c $(INCLUDES) $(NVFLAGS) $< -o $@ $(EXE): $(HOST_OBJ) $(DEVICE_OBJ) nvcc $(NVFLAGS) $(LDFLAGS) $(INCLUDES) -o $@ $^ clean: rm -f $(OBJS) $(EXE) ``` So now I am getting these errors: ``` nvcc -lGL -lGLU -lglut -lpthread -lcuda -I../include -o it ../sourcedir/it.c.o ../sourcedir/em.c.o ../sourcedir/art.c.o ../sourcedir/cg.c.o ../sourcedir/amatrix.c.o ../sourcedir/itreadargs.c.o ../sourcedir/sparse.c.o ../sourcedir/misc.c.o ../sourcedir/eval.c.o ../sourcedir/imgtools.c.o ../sourcedir/calc.c.o ../sourcedir/egif_lib.c.o ../sourcedir/dgif_lib.c.o ../sourcedir/gif_err.c.o ../sourcedir/gif_hash.c.o ../sourcedir/cg_cuda.cu.o ../sourcedir/it.c.o: In function `main': /home/vburca/CUDA_Research_2012/Recon2D/it/../sourcedir/it.c:280: undefined reference to `CG_CUDA' ../sourcedir/cg_cuda.cu.o: In function `CGUpdateAddVector(Vector*, Vector*, Vector*, float)': tmpxft_00004e1d_00000000-1_cg_cuda.cudafe1.cpp:(.text+0x44): undefined reference to `Error(char*, ...)' ../sourcedir/cg_cuda.cu.o: In function `CG_CUDA(SparseMatrix*, Vector*, Vector*)': tmpxft_00004e1d_00000000-1_cg_cuda.cudafe1.cpp:(.text+0x15f): undefined reference to `Print(int, char*, ...)' tmpxft_00004e1d_00000000-1_cg_cuda.cudafe1.cpp:(.text+0x18c): undefined reference to `ReadFIF(char*)' tmpxft_00004e1d_00000000-1_cg_cuda.cudafe1.cpp:(.text+0x1a2): undefined reference to `ImageToVector(Image*)' tmpxft_00004e1d_00000000-1_cg_cuda.cudafe1.cpp:(.text+0x1b8): undefined reference to `FreeImage(Image*)' tmpxft_00004e1d_00000000-1_cg_cuda.cudafe1.cpp:(.text+0x1c7): undefined reference to `DeviationVector(Vector*)' tmpxft_00004e1d_00000000-1_cg_cuda.cudafe1.cpp:(.text+0x248): undefined reference to `Print(int, char*, ...)' tmpxft_00004e1d_00000000-1_cg_cuda.cudafe1.cpp:(.text+0x255): undefined reference to `InitVector(int)' tmpxft_00004e1d_00000000-1_cg_cuda.cudafe1.cpp:(.text+0x269): undefined reference to `InitVector(int)' tmpxft_00004e1d_00000000-1_cg_cuda.cudafe1.cpp:(.text+0x27d): undefined reference to `InitVector(int)' tmpxft_00004e1d_00000000-1_cg_cuda.cudafe1.cpp:(.text+0x291): undefined reference to `InitVector(int)' tmpxft_00004e1d_00000000-1_cg_cuda.cudafe1.cpp:(.text+0x2a5): undefined reference to `InitVector(int)' tmpxft_00004e1d_00000000-1_cg_cuda.cudafe1.cpp:(.text+0x2c0): undefined reference to `Print(int, char*, ...)' tmpxft_00004e1d_00000000-1_cg_cuda.cudafe1.cpp:(.text+0x2e0): undefined reference to `MultSparseMatrixVector(SparseMatrix*, Vector*, Vector*)' tmpxft_00004e1d_00000000-1_cg_cuda.cudafe1.cpp:(.text+0x328): undefined reference to `MultSparseTMatrixVector(SparseMatrix*, Vector*, Vector*)' tmpxft_00004e1d_00000000-1_cg_cuda.cudafe1.cpp:(.text+0x37c): undefined reference to `MultSparseMatrixVector(SparseMatrix*, Vector*, Vector*)' tmpxft_00004e1d_00000000-1_cg_cuda.cudafe1.cpp:(.text+0x395): undefined reference to `MultVectorVector(Vector*, Vector*)' tmpxft_00004e1d_00000000-1_cg_cuda.cudafe1.cpp:(.text+0x3b1): undefined reference to `Print(int, char*, ...)' tmpxft_00004e1d_00000000-1_cg_cuda.cudafe1.cpp:(.text+0x3fb): undefined reference to `Print(int, char*, ...)' tmpxft_00004e1d_00000000-1_cg_cuda.cudafe1.cpp:(.text+0x414): undefined reference to `MultVectorVector(Vector*, Vector*)' tmpxft_00004e1d_00000000-1_cg_cuda.cudafe1.cpp:(.text+0x47b): undefined reference to `ConstrainVector(Vector*, float, float)' tmpxft_00004e1d_00000000-1_cg_cuda.cudafe1.cpp:(.text+0x4ce): undefined reference to `MultSparseTMatrixVector(SparseMatrix*, Vector*, Vector*)' tmpxft_00004e1d_00000000-1_cg_cuda.cudafe1.cpp:(.text+0x4e7): undefined reference to `MultVectorVector(Vector*, Vector*)' tmpxft_00004e1d_00000000-1_cg_cuda.cudafe1.cpp:(.text+0x55b): undefined reference to `MultSparseMatrixVector(SparseMatrix*, Vector*, Vector*)' tmpxft_00004e1d_00000000-1_cg_cuda.cudafe1.cpp:(.text+0x581): undefined reference to `SaveIteration(Vector*, int, char*)' tmpxft_00004e1d_00000000-1_cg_cuda.cudafe1.cpp:(.text+0x5ab): undefined reference to `L2NormVector(Vector*, Vector*, float)' tmpxft_00004e1d_00000000-1_cg_cuda.cudafe1.cpp:(.text+0x602): undefined reference to `Print(int, char*, ...)' tmpxft_00004e1d_00000000-1_cg_cuda.cudafe1.cpp:(.text+0x61f): undefined reference to `VectorToImage(Vector*, int, int)' tmpxft_00004e1d_00000000-1_cg_cuda.cudafe1.cpp:(.text+0x650): undefined reference to `L2NormVector(Vector*, Vector*, float)' tmpxft_00004e1d_00000000-1_cg_cuda.cudafe1.cpp:(.text+0x66a): undefined reference to `Print(int, char*, ...)' tmpxft_00004e1d_00000000-1_cg_cuda.cudafe1.cpp:(.text+0x679): undefined reference to `FreeVector(Vector*)' tmpxft_00004e1d_00000000-1_cg_cuda.cudafe1.cpp:(.text+0x69c): undefined reference to `RenameImage(Image*, char*)' collect2: ld returned 1 exit status make: *** [it] Error 1 ``` Thank you for your patience reading my post.