SRCS := $(wildcard js*.c utf*.c regexp.c)
HDRS := $(wildcard js*.h mujs.h utf.h regexp.h)
OBJS := $(SRCS:%.c=build/%.o)

prefix ?= /usr/local
bindir ?= $(prefix)/bin
incdir ?= $(prefix)/include
libdir ?= $(prefix)/lib

CFLAGS := -std=c99 -pedantic -Wall -Wextra -Wno-unused-parameter

ifeq "$(CC)" "clang"
CFLAGS += -Wunreachable-code
endif

ifeq "$(build)" "debug"
CFLAGS += -g
else ifeq "$(build)" "sanitize"
CFLAGS += -pipe -g -fsanitize=address -fno-omit-frame-pointer
LDFLAGS += -fsanitize=address
else
CFLAGS += -Os
ifeq "$(shell uname)" "Linux"
CFLAGS += -ffunction-sections -fdata-sections
LDFLAGS += -Wl,--gc-sections -Wl,-s
endif
endif

default: build build/mujs build/mujsone

debug:
	$(MAKE) build=debug clean default

sanitize:
	$(MAKE) build=sanitize clean default

release:
	$(MAKE) build=release clean default

astnames.h: jsparse.h
	grep -E '(AST|EXP|STM)_' jsparse.h | sed 's/^[^A-Z]*\(AST_\)*/"/;s/,.*/",/' | tr A-Z a-z > $@

opnames.h: jscompile.h
	grep -E 'OP_' jscompile.h | sed 's/^[^A-Z]*OP_/"/;s/,.*/",/' | tr A-Z a-z > $@

one.c: $(SRCS)
	ls $(SRCS) | awk '{print "#include \""$$1"\""}' > $@

jsdump.c: astnames.h opnames.h

build:
	mkdir -p build

build/%.o: %.c $(HDRS)
	$(CC) $(CFLAGS) -o $@ -c $<

build/libmujs.a: $(OBJS)
	$(AR) cru $@ $^

build/mujs: build/main.o build/libmujs.a
	$(CC) $(LDFLAGS) -o $@ $^ -lm

build/mujsone: build/main.o build/one.o
	$(CC) $(LDFLAGS) -o $@ $^ -lm

install: release
	install -d $(DESTDIR)$(incdir)
	install -d $(DESTDIR)$(libdir)
	install -d $(DESTDIR)$(bindir)
	install mujs.h $(DESTDIR)$(incdir)
	install build/libmujs.a $(DESTDIR)$(libdir)
	install build/mujs $(DESTDIR)$(bindir)

VERSION = $(shell git describe --tags --always)

tarball:
	git archive --format=zip --prefix=mujs-$(VERSION)/ HEAD > mujs-$(VERSION).zip
	git archive --format=tar --prefix=mujs-$(VERSION)/ HEAD | gzip > mujs-$(VERSION).tar.gz
	git archive --format=tar --prefix=mujs-$(VERSION)/ HEAD | xz > mujs-$(VERSION).tar.xz

tags: $(SRCS) main.c $(HDRS)
	ctags $^

test: build/mujs
	python tests/sputniktests/tools/sputnik.py --tests=tests/sputniktests --command ./build/mujs --summary

clean:
	rm -f astnames.h opnames.h one.c build/*

.PHONY: default test clean install debug release