# config

# just comment following line to disable CUDA

CUDA = cuda-9.2

CUDA_PATH := /opt/$(CUDA)

CUDA_BIN := $(CUDA_PATH)/bin

CUDA_PKGCONFIG := $(CUDA_PATH)/pkgconfig

DEPLIBS = gl x11 OpenCL

# compute build options

CXXFLAGS := $(CXXFLAGS) -O3 -Wall -fmessage-length=0 -DGL_GLEXT_PROTOTYPES

CXXFLAGS := $(CXXFLAGS) $(shell pkg-config --cflags $(DEPLIBS))

LIBS := $(LIBS) $(shell pkg-config --libs $(DEPLIBS))

ifdef CUDA

	CUDA_FLAGS := -O3 -use_fast_math

	CXXFLAGS := $(CXXFLAGS) -DCUDA $(shell PKG_CONFIG_PATH=$(CUDA_PKGCONFIG) pkg-config --cflags $(CUDA))

	LIBS := $(LIBS) $(shell PKG_CONFIG_PATH=$(CUDA_PKGCONFIG) pkg-config --libs $(CUDA))

endif

# files lists

TARGET = contourgl

SOURCES = \

	contourgl.cpp \

	clcontext.cpp \

	clrender.cpp \

	contour.cpp \

	contourbuilder.cpp \

	environment.cpp \

	geometry.cpp \

	glcontext.cpp \

	measure.cpp \

	polyspan.cpp \

	shaders.cpp \

	swrender.cpp \

	test.cpp \

	triangulator.cpp \

	utils.cpp

ifdef CUDA

	SOURCES += \

		cudacontext.cpp \

		cudarender.cpp

	CUDA_SOURCES = \

		cuda/contour.cu \

		cuda/hello.cu

endif

# files lists postprocessing 

OBJS = $(SOURCES:.cpp=.o)

DEPS = $(SOURCES:.cpp=.d)

PTXS = $(CUDA_SOURCES:.cu=.ptx)

# internal targets

%.ptx: %.cu

	$(CUDA_PATH)/bin/nvcc $(CUDA_FLAGS) -ptx $< -o $@

# rule for make *.d files with include (.h) dependencies

%.d: %.cpp

	@set -e; rm -f $@; \

	 $(CXX) -MM $(CXXFLAGS) $< > $@.$$$$; \

	 sed 's,\($*\)\.o[ :]*,\1.o $@ : ,g' < $@.$$$$ > $@; \

	 rm -f $@.$$$$

$(TARGET): $(PTXS) $(DEPS) $(OBJS)

	$(CXX) -o $(TARGET) $(OBJS) $(LIBS)

# include rules with include (.h) dependencies

-include $(DEPS)

# actual targets

# declare that 'all', 'cuda' and 'clean' are cannot be a filenames 

.PHONY: all clean

all: $(TARGET)

clean:

	rm -f $(PTXS) $(OBJS) $(DEPS) $(TARGET)