SRC=$(wildcard src/*.cpp)
INCLUDE =include
_HX_FEAT?= -DFIXED_ROW_SIZE=24

CXXFLAGS?= -pipe -O3 -march=native
CXXFLAGS+= -flto -felide-constructors -fgraphite -fno-strict-aliasing
CXXFLAGS+= -Wall -pedantic --std=gnu++20 $(addprefix -I,$(INCLUDE))
LDFLAGS?= -O3 -flto
LDFLAGS+= -lfmt

PROJ = hexview

OBJ = $(addprefix obj/,$(SRC:.cpp=.o))
PROF_OBJ = $(addprefix profile/,$(SRC:.cpp=.o))

.PHONY: all
all: dirs $(PROJ)

dirs:
	@mkdir -p obj/src
	@mkdir -p profile/src

obj/%.o: %.cpp
	$(CXX) -c $< $(_HX_FEAT) $(CXXFLAGS) -o $@ $(LDFLAGS)

profile/%.o: %.cpp
	$(CXX) -c $< $(_HX_FEAT) $(CXXFLAGS) -fprofile-generate -o $@ $(LDFLAGS)

$(PROJ): $(OBJ)
	$(CXX) $^ $(CXXFLAGS) -o $@ $(LDFLAGS)
	strip $@

pgo-generate: $(PROF_OBJ)
	$(CXX) $^ $(CXXFLAGS) -fprofile-generate -o $@ $(LDFLAGS)

pgo-profile: pgo-generate
	for i in {1..32}; do \
		dd if=/dev/urandom of=./pgo-test bs=1024 count=1024 \
		./pgo-generate ./pgo-test
	done
	rm ./pgo-test

clean:
	rm -f $(PROJ)
	rm -rf obj
	rm -rf profile
	rm -f pgo-generate