CC       = gcc
CFLAGS   = -std=gnu11
CPPFLAGS = -Iinclude -MMD -MP

SRCDIR = src

SRCS := $(wildcard $(SRCDIR)/*.c)
OBJS := $(patsubst $(SRCDIR)/%.c,%.o,$(SRCS))
EXE   = gc

DBDIR     = debug
DBEXE    := $(DBDIR)/$(EXE)
DBOBJS   := $(addprefix $(DBDIR)/, $(OBJS))
DBCFLAGS  = -g -O0 -DDEBUG


REDIR     = bin
REEXE    := $(REDIR)/$(EXE)
REOBJS   := $(addprefix $(REDIR)/, $(OBJS))
RECFLAGS  = -O3 -Wall -Wextra -Wpedantic -Werror

.PHONY: all clean debug prep release

all: debug release

debug: prep $(DBEXE)

$(DBEXE): $(DBOBJS)
	$(CC) $(CFLAGS) $(DBCFLAGS) -o $@ $^

$(DBDIR)/%.o: $(SRCDIR)/%.c
	$(CC) -c $(CPPFLAGS) $(CFLAGS) $(DBCFLAGS) -o $@ $<

release: prep $(REEXE)

$(REEXE): $(REOBJS)
	$(CC) $(CFLAGS) $(RECFLAGS) -o $@ $^

$(REDIR)/%.o: $(SRCDIR)/%.c
	$(CC) -c $(CPPFLAGS) $(CFLAGS) $(RECFLAGS) -o $@ $<

prep:
	@mkdir -p $(DBDIR) $(REDIR)

clean:
	rm -rf $(DBDIR) $(REDIR)

-include $(OBJ:.o=.d)