#!/usr/bin/make -f

# Target architecture for compilation
ARCH = native

# Optimization level
O = 2

# Flags for the compiler
# gnu11 to have clock_gettime because that is not strictly in c11
FLAGS  = -std=gnu11
FLAGS += -O$(O)
FLAGS += -march=$(ARCH)
# Only override gcc default tuning if specified in make command line
ifneq (, $(TUNE))
	FLAGS += -mtune=$(TUNE)
endif
FLAGS += -pedantic
FLAGS += -Wall
FLAGS += -Wextra
#FLAGS += -Werror
#FLAGS += -Wconversion
FLAGS += -Wmissing-prototypes
FLAGS += -Wlogical-op
FLAGS += -Wdisabled-optimization
#FLAGS += -fanalyzer
FLAGS += -flto
FLAGS += -s
FLAGS += -Wl,--gc-sections

# Libraries used
FLAGS += -lgmp
FLAGS += -lrt

# Directories where .o files and excecutables will be placed
OBJDIR = obj
OUTDIR = out

MAIN = count

# C compiler
CC = cc

.NOTINTERMEDIATE:

# Messages to print during different steps in making
MSG_LINKING = Linking:
MSG_COMPILING = Compiling C:
MSG_CLEANING = Cleaning:
MSG_CLEANING_OBJ = Cleaning $(OBJDIR):
MSG_CLEANING_OUT = Cleaning $(OUTDIR):

# Compile and run the default UI target
run: run_count

run_%: $(OUTDIR)/%.elf
	./$^ 4

# Compile the final excecutable
$(OUTDIR)/%.elf: %.c
	@echo $(MSG_LINKING) $@
	@mkdir -p $(@D)
	$(CC) $(FLAGS) -o $@ $^

# Remove all compilation output and intermediate files
clean:
	@echo $(MSG_CLEANING)
	@echo $(MSG_CLEANING_OBJ)
	rm -f $(OBJDIR)/*.o
	@echo $(MSG_CLEANING_OUT)
	rm -f $(OUTDIR)/*.elf