update makefile

.gitignore

@@ -1,3 +1,4 @@
 *~
 build/
 test*
+obj/

Makefile

@@ -1,17 +1,26 @@
-SRC:=src/*.cpp
-INCLUDE:=include/
-BUILD:=build
-FEATURES?=-DFIXED_ROW_SIZE=24
-CXXFLAGS+= $(FEATURES) -Wall -pedantic -O3 -march=native --std=gnu++20 -fgraphite -flto
-LDFLAGS+=-O3 -flto -lfmt
-bindir?=/usr/local/bin
+SRC=$(wildcard src/*.cpp)
+INCLUDE =include
+CXXFLAGS = -Wall -pedantic --std=gnu++20 $(addprefix -I,$(INCLUDE))
+CXXFLAGS+= -flto -felide-constructors -fgraphite -O3
+LDFLAGS = -lfmt -O3 -flto 
 
-hexview:
-	g++ $(SRC) $(CXXFLAGS) -I$(INCLUDE) -o $(BUILD)/$@ $(LDFLAGS)
-	strip $(BUILD)/$@
+PROJ = hexview
 
-clean:
-	rm -f $(BUILD)/*
+OBJ = $(addprefix obj/,$(SRC:.cpp=.o))
+
+.PHONY: all
+all: dirs $(PROJ)
+
+dirs:
+	@mkdir -p obj/src
 
-install:
-	cp -f $(BUILD)/hexview $(DESTDIR)$(bindir)/hexview
+obj/%.o: %.cpp
+	$(CXX) -c $< $(CXXFLAGS) -o $@ $(LDFLAGS)
+
+$(PROJ): $(OBJ)
+	$(CXX) $^ $(CXXFLAGS) -o $@ $(LDFLAGS)
+	strip $@
+
+clean:
+	rm -f $(PROJ)
+	rm -rf obj