.POSIX:

.SUFFIXES: .c .bc .m

VERSION = 4

#CC=clang

CFLAGS += -fPIC -g
CPPFLAGS += -DTYPE_DEPENDENT_DISPATCH -DGNUSTEP
CPPFLAGS += -D__OBJC_RUNTIME_INTERNAL__=1 -D_XOPEN_SOURCE=500

PREFIX?= /usr/local
LIB_DIR= ${PREFIX}/lib
HEADER_DIR= ${PREFIX}/include

OBJECTS = \
	NSBlocks.bc\
	Protocol2.bc\
	abi_version.bc\
	alias_table.bc\
	blocks_runtime.bc\
	caps.bc\
	category_loader.bc\
	class_table.bc\
	dtable.bc\
	eh_personality.bc\
	encoding2.bc\
	hash_table.bc\
	hooks.bc\
	ivar.bc\
	legacy_malloc.bc\
	loader.bc\
	mutation.bc\
	properties.bc\
	protocol.bc\
	runtime.bc\
	sarray2.bc\
	selector_table.bc\
	sendmsg2.bc\
	statics_loader.bc\
	sync.bc\
	toydispatch.bc

all: libobjc.so.$(VERSION) libobjc.a

libobjc.so.$(VERSION): libobjc.o
	@echo Linking shared library...
	@ld -shared -o $@ libobjc.o

libobjc.a: libobjc.o
	@echo Linking static library...
	@ld -r -s -o $@ libobjc.o

libobjc.o: libobjc.bc
	@echo Generating native object code...
	@llc -O3 -filetype=obj -o libobjc.o libobjc.bc

libobjc.bc: $(OBJECTS) exports.txt
	@echo Linking bitcode...
	@llvm-ld -internalize -internalize-public-api-file=../exports.txt -link-as-library -native -o libobjc.bc $(OBJECTS)

.c.bc:
	@echo Compiling $<...
	@clang $(CPPFLAGS) $(CFLAGS) -emit-llvm -c $< -o $@

.m.bc: 
	@echo Compiling $<...
	@clang $(CPPFLAGS) $(CFLAGS) -emit-llvm -c $< -o $@

install: all
	install -m 444 libobjc.so.$(VERSION) $(LIB_DIR)
	install -m 444 libobjc.a $(LIB_DIR)
	ln -sf $(LIB_DIR)/libobjc.so.$(VERSION) $(LIB_DIR)/libobjc.so
	install -d $(HEADER_DIR)/objc
	install -m 444 objc/*.h $(HEADER_DIR)/objc

clean:
	@echo Cleaning...
	@rm -f obj/*