Makefile

# The author of this program disclaims copyright.

SHELL := $(shell which bash)
CC := gcc
APP := calc

srcdir = $(shell dirname $(realpath $(lastword $(MAKEFILE_LIST))))
lemondir = $(realpath $(srcdir)/../..)

.SUFFIXES:
.SUFFIXES: .c .h

CFLAGS := -Wall -W -O2 -s -pipe -std=c99
LFLAGS := -O2 -s -pipe

all: $(APP)

lemon: $(lemondir)/lemon.c
	$(CC) -I$(lemondir) -o $@ $(LFLAGS) $<

# Don't use $(APP).h as a target
# as the header file is not regenerated by
# lemon if there was no change in tokens names.
# Using $(APP).c is sufficient
# becase generating .c will always create the .h as well.
$(APP).c: lemon $(APP).y $(lemondir)/lempar.c
	./lemon -T$(lemondir)/lempar.c $(APP).y

$(APP): $(APP).c $(APP).h main.c
	cat main.c >> $(APP).c
	$(CC) -I. -o $(APP) $(LFLAGS) $<

test: $(APP)
	./$(APP)

clean:
	rm -f *.o
	rm -f *.out
	rm -f lemon
	rm -f $(APP) $(APP).c $(APP).h