SWIFTC = /usr/bin/swiftc
INSTALL_NAME_TOOL = /usr/bin/install_name_tool
SWIFTLIB = libswiftspeech.dylib
LIBDIR = ../inst/lib
DEVLIBDIR = ../lib
REQUIRED_ARGS = -I /Library/Frameworks/R.framework/Headers -F/Library/Frameworks -framework R -emit-library
# add any additional frameworks being used here
EXTRA_FRAMEWORKS = -framework CoreML -framework NaturalLanguage
# the main swift executable
SWIFT_SRC = swiftspeech.swift
# the bridging header which sets up R accessibility to Swift
BRIDGING_HEADER = -import-objc-header swiftspeech.h
# the package shared library (what you put in useDynLib())
PKG_DYNLIB = swiftspeech.so
# linker glue
PKG_LIBS = -lswiftspeech -L../inst/lib
SOURCES = init.c
OBJECTS = init.o

all:  glue $(SHLIB) swiftLibrary

glue:
  # this makes the R registration code/init.c
	Rscript -e "swiftr::add_registration_glue()"

swiftLibrary: $(SWIFTLIB)
	# this is where the dylib will go for pkg installation
	-@if test ! -e $(LIBDIR); then mkdir -p $(LIBDIR); fi
	cp $(SWIFTLIB) $(LIBDIR)
	# this is where the dylib will go during development b/c "@loader_path"
	-@if test ! -e $(DEVLIBDIR); then mkdir -p $(DEVLIBDIR); fi
	cp $(SWIFTLIB) $(DEVLIBDIR)


$(SWIFTLIB): $(OBJECTS)
	# compile packate "glue"
	$(SHLIB_CXXLD) -o $(SWIFTLIB) $^ $(SHLIB_CXXLDFLAGS) $(LDFLAGS) $(ALL_LIBS)
	# compile swift compoonents
	$(SWIFTC) $(REQUIRED_ARGS) $(BRIDGING_HEADER) $(EXTRA_FRAMEWORKS) $(SWIFT_SRC)
	# ensure R can find the dylib after installation
	$(INSTALL_NAME_TOOL) -change $(SWIFTLIB) @loader_path/../lib/$(SWIFTLIB) $(PKG_DYNLIB)

clean:
	rm -Rf $(SHLIB) $(SWIFTLIB) $(OBJECTS) $(DEVLIB)/$(SWIFTLIB)