# Flags
CC = emcc
JSFLAGS += -Oz -s "EXTRA_EXPORTED_RUNTIME_METHODS=['lengthBytesUTF8','stringToUTF8']" -s "EXPORTED_FUNCTIONS=['_malloc','_free']" -s WASM=1 -s EXIT_RUNTIME=1
CFLAGS += $(JSFLAGS) -std=gnu99 -Wall -pedantic
LFLAGS += -lm
DEBUG =
#DEBUG += --debug

.PHONY: all
all: webdice.js

webdice.js: js-api.c expression.o lex.yy.o parser.tab.o
	$(CC) $^ $(CFLAGS) -o $@ $(LFLAGS)

lex.yy.c lex.yy.h: lexer.l parser.tab.h expression.h
	flex ${DEBUG} --header-file=lex.yy.h $<

parser.tab.c parser.tab.h: parser.y expression.h
	bison ${DEBUG} -d $<

%.o: %.c
	$(CC) $(CFLAGS) -c $<

native-test: native-test.c lex.yy.c parser.tab.c expression.c
	gcc -m32 -std=gnu99 -Wall -pedantic $^ -o $@ $(LFLAGS) -g -O0

.PHONY: clean
clean:
	rm -rf *.o {lex.yy,parser.tab}.{c,h} webdice.js