CC ?= gcc
CFLAGS = -Isrc -Os -fdiagnostics-color=always -fmax-errors=5
LDFLAGS = 
LDLIBS = 

COSMO_LIBDIR = ./libcosmo

COSMO_PREFLAGS = -g -static -nostdlib -nostdinc -fno-pie -no-pie -mno-red-zone
COSMO_PREFLAGS += -fno-omit-frame-pointer -pg -mnop-mcount -mno-tls-direct-seg-refs
COSMO_PREFLAGS += -include $(COSMO_LIBDIR)/cosmopolitan.h -Idummy

COSMO_POSTFLAGS += -Wl,--gc-sections -fuse-ld=bfd -Wl,--gc-sections
COSMO_POSTFLAGS += -Wl,-T,$(COSMO_LIBDIR)/ape.lds
COSMO_POSTFLAGS += $(COSMO_LIBDIR)/crt.o $(COSMO_LIBDIR)/ape-no-modify-self.o $(COSMO_LIBDIR)/cosmopolitan.a

COSMO_FILES = $(COSMO_LIBDIR)/ape-copy-self.o $(COSMO_LIBDIR)/ape-no-modify-self.o
COSMO_FILES += $(COSMO_LIBDIR)/ape.lds $(COSMO_LIBDIR)/ape.o $(COSMO_LIBDIR)/crt.o
COSMO_FILES += $(COSMO_LIBDIR)/cosmopolitan.a $(COSMO_LIBDIR)/cosmopolitan.h

DUMMY_HEADERS = arpa/inet.h assert.h dirent.h dlfcn.h errno.h fcntl.h inttypes.h limits.h locale.h math.h netdb.h pthread.h sched.h signal.h stdarg.h stddef.h stdint.h stdio.h stdlib.h string.h sys/ioctl.h sys/socket.h sys/stat.h sys/syscall.h sys/time.h sys/types.h sys/utsname.h termios.h time.h unistd.h wchar.h
DUMMY_MISSING = $(foreach header,$(DUMMY_HEADERS),$(if $(wildcard dummy/$(header)),,dummy/$(header)))

TARGET   = kuroko
OBJS     = $(patsubst %.c, %.o, $(filter-out src/kuroko.c,$(sort $(wildcard src/*.c))))
HEADERS  = $(wildcard src/kuroko/*.h)
GENMODS  = modules/codecs/sbencs.krk modules/codecs/dbdata.krk

ifdef KRK_DISABLE_DOCS
  CFLAGS += -DKRK_NO_DOCUMENTATION -Wno-unused-value
endif

ifndef KRK_DISABLE_RLINE
  BIN_OBJS += src/vendor/rline.o
else
  CFLAGS  += -DNO_RLINE
endif

ifdef KRK_DISABLE_DEBUG
  CFLAGS  += -DKRK_DISABLE_DEBUG
endif

ifdef KRK_DISABLE_DYNAMIC
  BIN_OBJS += src/modules/module_math.o src/modules/module_random.o src/modules/module_socket.o src/modules/module_timeit.o src/modules/module_wcwidth.o
  CFLAGS += -DKRK_DISABLE_DYNAMIC -DSTATIC_ONLY
endif

ifdef KRK_DISABLE_THREADS
  CFLAGS += -DKRK_DISABLE_THREADS
else
  CFLAGS += -DKRK_MEDIOCRE_TLS
endif

ifdef KRK_NO_DISASSEMBLY
  CFLAGS += -DKRK_NO_DISASSEMBLY=1
endif

ifdef KRK_NO_TRACING
  CFLAGS += -DKRK_NO_TRACING=1
endif

ifdef KRK_NO_STRESS_GC
  CFLAGS += -DKRK_NO_STRESS_GC=1
endif

HEADERS += $(COSMO_LIBDIR)/cosmopolitan.h
BIN_OBJS += $(OBJS)

all: $(TARGET).com $(GENMODS)

dummy/%.h:
	mkdir -p dummy && touch $@

dummy/arpa/%.h:
	mkdir -p dummy/arpa && touch $@

dummy/sys/%.h:
	mkdir -p dummy/sys && touch $@

%.o: %.c $(HEADERS) $(DUMMY_MISSING)
	$(CC) $(CFLAGS) $(COSMO_PREFLAGS) -c -o $@ $<

$(TARGET).com.dbg: src/$(TARGET).c $(BIN_OBJS) $(HEADERS) $(DUMMY_MISSING)
	$(CC) $(CFLAGS) $(LDFLAGS) $(COSMO_PREFLAGS) -o $@ $< $(BIN_OBJS) $(LDLIBS) $(COSMO_POSTFLAGS)

$(TARGET).com: $(TARGET).com.dbg
	objcopy -S -O binary $< $@

.PHONY: test
test:
	@for i in test/*.krk; do echo $$i; KUROKO_TEST_ENV=1 $(TESTWRAPPER) ./$(TARGET).com.dbg $$i > $$i.actual; diff $$i.expect $$i.actual || exit 1; rm $$i.actual; done

.PHONY: clean
clean:
	-rm -f $(OBJS) $(TARGET).com $(TARGET).com.dbg src/*.o src/vendor/*.o

# special cases:

modules/codecs/sbencs.krk: tools/codectools/gen_sbencs.krk tools/codectools/encodings.json tools/codectools/indexes.json | $(TARGET).com.dbg
	./$(TARGET).com.dbg tools/codectools/gen_sbencs.krk

modules/codecs/dbdata.krk: tools/codectools/gen_dbdata.krk tools/codectools/encodings.json tools/codectools/indexes.json | $(TARGET).com.dbg
	./$(TARGET).com.dbg tools/codectools/gen_dbdata.krk