# common settings
TARGETDIR := build
PRFX_PATH ?= ~/opt/iterative_point_recovery
OCLH_PATH ?= ~/opt/oclh
RM        := rm -rf
SRCDIR    := src
C_SRCS    := $(wildcard $(SRCDIR)/*.clc)
# host settings
CC          := gcc
LINKER      := gcc
CFLAGS      := -xc -std=c11 -pedantic -Wall -Wextra -Wconversion
LDFLAGS     :=
OUTPUTFLAGS := -c -fmessage-length=0
MISCFLAGS   := -pthread
INCLUDES    := -I"src/include_hd/"
LIBS        := -lm
HOST_OBJS   := $(patsubst $(SRCDIR)/%.clc,$(TARGETDIR)/%.o,$(C_SRCS))
C_DEPS      := $(wildcard $(TARGETDIR)/*.d)
IPR_HOST_LIBRARY_NAME := libIterPntRcv.so
MODEFLAGS   := -O3
# GPGPU settings
# GPGPU_DEV_IDX := 0
OCL_CC      := $(OCLH_PATH)/bin/oclh_cr
OCL_LINKER  := $(OCLH_PATH)/bin/oclh_lr
OCL_CFLAGS  := -cl-std=CL1.2 -Werror
OCL_LDFLAGS :=
OCL_OUTPUTFLAGS := --verbatim-output-name
OCL_INCLUDES:= -I src/include_hd/ \
               -I $(OCLH_PATH)/include/include_d/ \
               -I $(OCLH_PATH)/include/include_hd/
OCL_OBJS    := $(patsubst $(SRCDIR)/%.clc,$(TARGETDIR)/%.clo,$(C_SRCS))
IPR_OCL_LIBRARY_NAME  := libIterPntRcv
# intermediate targets
$(TARGETDIR)/%.o: $(SRCDIR)/%.clc
	mkdir -p $(TARGETDIR); \
	$(CC) $(INCLUDES) $(MODEFLAGS) $(CFLAGS) $(DEFS) $(OUTPUTFLAGS) \
	    -fPIC -MMD -MP -MF"$(@:%.o=%.d)" -MT"$(@)" -o "$@" "$<"
$(TARGETDIR)/%.clo: $(SRCDIR)/%.clc FORCE
ifneq ($(strip $(GPGPU_DEV_IDX)),)
	mkdir -p $(TARGETDIR); \
	$(OCL_CC) --dev-idxs=$(GPGPU_DEV_IDX) $(OCL_INCLUDES) \
	    $(OCL_MODEFLAGS) $(OCL_CFLAGS) $(OCL_DEFS) $(OCL_OUTPUTFLAGS) \
	    -o "$@" "$<"
endif
	@echo ' '

all: host_lib opencl_lib
host_lib: $(HOST_OBJS)
	@echo 'Building target: $@'
	@echo 'Invoking host C Linker'
	$(LINKER) $(LDFLAGS) $(MISCFLAGS) $(LIBS) $(HOST_OBJS) \
	-shared -Wl,-soname,$(IPR_HOST_LIBRARY_NAME) \
	-o "$(TARGETDIR)/$(IPR_HOST_LIBRARY_NAME)"
	@echo 'Finished building target: $@'
	@echo ' '
opencl_lib: $(OCL_OBJS)
ifneq ($(strip $(GPGPU_DEV_IDX)),)
	@echo 'Building target: $@'
	@echo 'Invoking OpenCL C Linker'
	$(OCL_LINKER) --dev-idxs=$(GPGPU_DEV_IDX) $(OCL_LDFLAGS) \
	    -create-library -o $(TARGETDIR)/$(IPR_OCL_LIBRARY_NAME) \
	    $(OCL_OBJS)
	@echo 'Finished building target: $@'
endif
	@echo ' '
debug: MODEFLAGS     := -O0 -g3
debug: OCL_MODEFLAGS := -g
debug: host_lib opencl_lib
install:
	mkdir -p $(PRFX_PATH)/lib
	    cp $(TARGETDIR)/$(IPR_HOST_LIBRARY_NAME) $(PRFX_PATH)/lib
	    ocllibs=($(TARGETDIR)/$(IPR_OCL_LIBRARY_NAME)*.clso) ;\
	    if [ -f "$${ocllibs[0]}" ]; then \
	        cp $(TARGETDIR)/$(IPR_OCL_LIBRARY_NAME)*.clso $(PRFX_PATH)/lib;\
	    fi
	mkdir -p $(PRFX_PATH)/include_hd
	    cp $(SRCDIR)/include_hd/* $(PRFX_PATH)/include_hd
	cd $(PRFX_PATH)/lib ; \
	   ln -fs $(IPR_HOST_LIBRARY_NAME) $(IPR_HOST_LIBRARY_NAME).0 ; \
	   ln -fs $(IPR_HOST_LIBRARY_NAME) $(IPR_HOST_LIBRARY_NAME).0.0
uninstall:
	$(RM) $(PRFX_PATH)/lib/$(IPR_HOST_LIBRARY_NAME) \
	      $(PRFX_PATH)/lib/$(IPR_OCL_LIBRARY_NAME)*.clso $(PRFX_PATH)/lib \
	      $(PRFX_PATH)/include_hd/* $(PRFX_PATH)/include_hd $(PRFX_PATH)
clean:
	$(RM) *.log $(TARGETDIR)/*.log \
	    $(HOST_OBJS) $(OCL_OBJS) $(C_DEPS) \
	    $(TARGETDIR)/$(IPR_HOST_LIBRARY_NAME)* \
	    $(TARGETDIR)/$(IPR_OCL_LIBRARY_NAME)*.clso
	@echo ' '

FORCE: ;

.PHONY: clean debug stable