SOURCES := $(wildcard *.c)

ifeq ("$(wildcard lex.yy.c)", "")
SOURCES += lex.yy.c
endif

ifeq ("$(wildcard y.tab.c)", "")
SOURCES += y.tab.c
endif

OBJECTS := $(patsubst %.c, %.o, $(SOURCES))

TARGET := cbl36
CFLAGS := -Wall -O2

all: so $(TARGET)

$(TARGET): $(OBJECTS)
    $(CC) $(CFLAGS) $^ -o $@

y.tab.o: y.tab.c

y.tab.c: bc.y
    yacc -d $<

lex.yy.o: lex.yy.c

lex.yy.c: y.tab.c scan.l
    flex scan.l

clean:
    rm -fv *.o $(TARGET) *.yy.* *.tab.*