BIN = bst
SRC = main.cpp
CC = g++
CFLAGS = -Wall -std=gnu++98 -pedantic -MD
DBGFLAGS = -g -O0
ifdef DEBUG
    CFLAGS += $(DBGFLAGS)
else
    CFLAGS += -O2 -march=native -mtune=native
endif
LDFLAGS = -lm

OBJ_DIR = obj
DEPS_DIR = obj
BIN_DIR = bin

CPP_FILES = $(filter %.cpp, $(SRC))
DEP_FILES = $(addprefix $(DEPS_DIR)/, $(addsuffix .d, $(notdir $(subst .cpp,,$(SRC)))))
OBJ_FILES = $(addprefix $(OBJ_DIR)/, $(addsuffix .o, $(notdir $(subst .cpp,,$(SRC)))))

INCL = -I/include

define CPP_template
$(1): $(2)
	@mkdir -p $$(OBJ_DIR)
	@mkdir -p $$(DEPS_DIR)
	$$(CC) -c $$(CFLAGS) $$(INCL) $$< -o $$@
endef

all: $(BIN)

$(foreach cppfile, $(CPP_FILES), $(eval $(call CPP_template, $(OBJ_DIR)/$(notdir $(subst .cpp,,$(cppfile))).o, $(cppfile))))

$(BIN): $(OBJ_FILES)
	@mkdir -p $(BIN_DIR)
	$(CC) $(LDFLAGS) $(OBJ_FILES) -o $(BIN_DIR)/$@

.PHONY: clean

clean:
	rm -rf $(OBJ_DIR)
	rm -f $(BIN_DIR)/$(BIN)

-include $(DEP_FILES)