py/py.mk - lite/micropython - Linaro Git Browser

 # where py object files go (they have a name prefix to prevent filename clashes)
 PY_BUILD = $(BUILD)/py

 # where autogenerated header files go
 HEADER_BUILD = $(BUILD)/genhdr

 # file containing qstr defs for the core Python bit
 PY_QSTR_DEFS = $(PY_SRC)/qstrdefs.h

 # If qstr autogeneration is not disabled we specify the output header
 # for all collected qstrings.
 ifneq ($(QSTR_AUTOGEN_DISABLE),1)
 QSTR_DEFS_COLLECTED = $(HEADER_BUILD)/qstrdefs.collected.h
 endif

 # some code is performance bottleneck and compiled with other optimization options
 CSUPEROPT = -O3

 INC += -I../lib
 INC += -I../lib/netutils

 # this sets the config file for FatFs
 CFLAGS_MOD += -DFFCONF_H=\"lib/oofatfs/ffconf.h\"

 ifeq ($(MICROPY_PY_USSL),1)
 CFLAGS_MOD += -DMICROPY_PY_USSL=1
 ifeq ($(MICROPY_SSL_AXTLS),1)
 CFLAGS_MOD += -DMICROPY_SSL_AXTLS=1 -I../lib/axtls/ssl -I../lib/axtls/crypto -I../lib/axtls/config
 LDFLAGS_MOD += -Lbuild -laxtls
 else ifeq ($(MICROPY_SSL_MBEDTLS),1)
 # Can be overriden by ports which have "builtin" mbedTLS
 MICROPY_SSL_MBEDTLS_INCLUDE ?= ../lib/mbedtls/include
 CFLAGS_MOD += -DMICROPY_SSL_MBEDTLS=1 -I$(MICROPY_SSL_MBEDTLS_INCLUDE)
 LDFLAGS_MOD += -L../lib/mbedtls/library -lmbedx509 -lmbedtls -lmbedcrypto
 endif
 endif

 #ifeq ($(MICROPY_PY_LWIP),1)
 #CFLAGS_MOD += -DMICROPY_PY_LWIP=1 -I../lib/lwip/src/include -I../lib/lwip/src/include/ipv4 -I../extmod/lwip-include
 #endif

 ifeq ($(MICROPY_PY_LWIP),1)
 LWIP_DIR = lib/lwip/src
 INC += -I../lib/lwip/src/include -I../lib/lwip/src/include/ipv4 -I../extmod/lwip-include
 CFLAGS_MOD += -DMICROPY_PY_LWIP=1
 SRC_MOD += extmod/modlwip.c lib/netutils/netutils.c
 SRC_MOD += $(addprefix $(LWIP_DIR)/,\
 	core/def.c \
 	core/dns.c \
 	core/init.c \
 	core/mem.c \
 	core/memp.c \
 	core/netif.c \
 	core/pbuf.c \
 	core/raw.c \
 	core/stats.c \
 	core/sys.c \
 	core/tcp.c \
 	core/tcp_in.c \
 	core/tcp_out.c \
 	core/timers.c \
 	core/udp.c \
 	core/ipv4/autoip.c \
 	core/ipv4/icmp.c \
 	core/ipv4/igmp.c \
 	core/ipv4/inet.c \
 	core/ipv4/inet_chksum.c \
 	core/ipv4/ip_addr.c \
 	core/ipv4/ip.c \
 	core/ipv4/ip_frag.c \
 	)
 ifeq ($(MICROPY_PY_LWIP_SLIP),1)
 CFLAGS_MOD += -DMICROPY_PY_LWIP_SLIP=1
 SRC_MOD += $(LWIP_DIR)/netif/slipif.c
 endif
 endif

 ifeq ($(MICROPY_PY_BTREE),1)
 BTREE_DIR = lib/berkeley-db-1.xx
 CFLAGS_MOD += -D__DBINTERFACE_PRIVATE=1 -Dmpool_error=printf -Dabort=abort_ -Dvirt_fd_t=mp_obj_t "-DVIRT_FD_T_HEADER=<py/obj.h>"
 INC += -I../$(BTREE_DIR)/PORT/include
 SRC_MOD += extmod/modbtree.c
 SRC_MOD += $(addprefix $(BTREE_DIR)/,\
 btree/bt_close.c \
 btree/bt_conv.c \
 btree/bt_debug.c \
 btree/bt_delete.c \
 btree/bt_get.c \
 btree/bt_open.c \
 btree/bt_overflow.c \
 btree/bt_page.c \
 btree/bt_put.c \
 btree/bt_search.c \
 btree/bt_seq.c \
 btree/bt_split.c \
 btree/bt_utils.c \
 mpool/mpool.c \
 	)
 CFLAGS_MOD += -DMICROPY_PY_BTREE=1
 # we need to suppress certain warnings to get berkeley-db to compile cleanly
 $(BUILD)/$(BTREE_DIR)/%.o: CFLAGS += -Wno-old-style-definition -Wno-sign-compare -Wno-unused-parameter
 endif

 # py object files
 PY_O_BASENAME = \
 	mpstate.o \
 	nlrx86.o \
 	nlrx64.o \
 	nlrthumb.o \
 	nlrxtensa.o \
 	nlrsetjmp.o \
 	malloc.o \
 	gc.o \
 	qstr.o \
 	vstr.o \
 	mpprint.o \
 	unicode.o \
 	mpz.o \
 	reader.o \
 	lexer.o \
 	parse.o \
 	scope.o \
 	compile.o \
 	emitcommon.o \
 	emitbc.o \
 	asmbase.o \
 	asmx64.o \
 	emitnx64.o \
 	asmx86.o \
 	emitnx86.o \
 	asmthumb.o \
 	emitnthumb.o \
 	emitinlinethumb.o \
 	asmarm.o \
 	emitnarm.o \
 	asmxtensa.o \
 	emitnxtensa.o \
 	emitinlinextensa.o \
 	formatfloat.o \
 	parsenumbase.o \
 	parsenum.o \
 	emitglue.o \
 	persistentcode.o \
 	runtime.o \
 	runtime_utils.o \
 	scheduler.o \
 	nativeglue.o \
 	stackctrl.o \
 	argcheck.o \
 	warning.o \
 	map.o \
 	obj.o \
 	objarray.o \
 	objattrtuple.o \
 	objbool.o \
 	objboundmeth.o \
 	objcell.o \
 	objclosure.o \
 	objcomplex.o \
 	objdict.o \
 	objenumerate.o \
 	objexcept.o \
 	objfilter.o \
 	objfloat.o \
 	objfun.o \
 	objgenerator.o \
 	objgetitemiter.o \
 	objint.o \
 	objint_longlong.o \
 	objint_mpz.o \
 	objlist.o \
 	objmap.o \
 	objmodule.o \
 	objobject.o \
 	objpolyiter.o \
 	objproperty.o \
 	objnone.o \
 	objnamedtuple.o \
 	objrange.o \
 	objreversed.o \
 	objset.o \
 	objsingleton.o \
 	objslice.o \
 	objstr.o \
 	objstrunicode.o \
 	objstringio.o \
 	objtuple.o \
 	objtype.o \
 	objzip.o \
 	opmethods.o \
 	sequence.o \
 	stream.o \
 	binary.o \
 	builtinimport.o \
 	builtinevex.o \
 	builtinhelp.o \
 	modarray.o \
 	modbuiltins.o \
 	modcollections.o \
 	modgc.o \
 	modio.o \
 	modmath.o \
 	modcmath.o \
 	modmicropython.o \
 	modstruct.o \
 	modsys.o \
 	moduerrno.o \
 	modthread.o \
 	vm.o \
 	bc.o \
 	showbc.o \
 	repl.o \
 	smallint.o \
 	frozenmod.o \
 	../extmod/moductypes.o \
 	../extmod/modujson.o \
 	../extmod/modure.o \
 	../extmod/moduzlib.o \
 	../extmod/moduheapq.o \
 	../extmod/modutimeq.o \
 	../extmod/moduhashlib.o \
 	../extmod/modubinascii.o \
 	../extmod/virtpin.o \
 	../extmod/machine_mem.o \
 	../extmod/machine_pinbase.o \
 	../extmod/machine_signal.o \
 	../extmod/machine_pulse.o \
 	../extmod/machine_i2c.o \
 	../extmod/machine_spi.o \
 	../extmod/modussl_axtls.o \
 	../extmod/modussl_mbedtls.o \
 	../extmod/modurandom.o \
 	../extmod/moduselect.o \
 	../extmod/modwebsocket.o \
 	../extmod/modwebrepl.o \
 	../extmod/modframebuf.o \
 	../extmod/vfs.o \
 	../extmod/vfs_reader.o \
 	../extmod/vfs_fat.o \
 	../extmod/vfs_fat_diskio.o \
 	../extmod/vfs_fat_file.o \
 	../extmod/vfs_fat_misc.o \
 	../extmod/utime_mphal.o \
 	../extmod/uos_dupterm.o \
 	../lib/embed/abort_.o \
 	../lib/utils/printf.o \

 # prepend the build destination prefix to the py object files
 PY_O = $(addprefix $(PY_BUILD)/, $(PY_O_BASENAME))

 # object file for frozen files
 ifneq ($(FROZEN_DIR),)
 PY_O += $(BUILD)/$(BUILD)/frozen.o
 endif

 # object file for frozen bytecode (frozen .mpy files)
 ifneq ($(FROZEN_MPY_DIR),)
 PY_O += $(BUILD)/$(BUILD)/frozen_mpy.o
 endif

 # Sources that may contain qstrings
 SRC_QSTR_IGNORE = nlr% emitnx86% emitnx64% emitnthumb% emitnarm% emitnxtensa%
 SRC_QSTR = $(SRC_MOD) $(addprefix py/,$(filter-out $(SRC_QSTR_IGNORE),$(PY_O_BASENAME:.o=.c)) emitnative.c)

 # Anything that depends on FORCE will be considered out-of-date
 FORCE:
 .PHONY: FORCE

 $(HEADER_BUILD)/mpversion.h: FORCE | $(HEADER_BUILD)
 	$(Q)$(PYTHON) $(PY_SRC)/makeversionhdr.py $@

 # mpconfigport.mk is optional, but changes to it may drastically change
 # overall config, so they need to be caught
 MPCONFIGPORT_MK = $(wildcard mpconfigport.mk)

 # qstr data
 # Adding an order only dependency on $(HEADER_BUILD) causes $(HEADER_BUILD) to get
 # created before we run the script to generate the .h
 # Note: we need to protect the qstr names from the preprocessor, so we wrap
 # the lines in "" and then unwrap after the preprocessor is finished.
 $(HEADER_BUILD)/qstrdefs.generated.h: $(PY_QSTR_DEFS) $(QSTR_DEFS) $(QSTR_DEFS_COLLECTED) $(PY_SRC)/makeqstrdata.py mpconfigport.h $(MPCONFIGPORT_MK) $(PY_SRC)/mpconfig.h | $(HEADER_BUILD)
 	$(ECHO) "GEN $@"
 	$(Q)cat $(PY_QSTR_DEFS) $(QSTR_DEFS) $(QSTR_DEFS_COLLECTED) | $(SED) 's/^Q(.*)/"&"/' | $(CPP) $(CFLAGS) - | $(SED) 's/^"\(Q(.*)\)"/\1/' > $(HEADER_BUILD)/qstrdefs.preprocessed.h
 	$(Q)$(PYTHON) $(PY_SRC)/makeqstrdata.py $(HEADER_BUILD)/qstrdefs.preprocessed.h > $@

 # Force nlr code to always be compiled with space-saving optimisation so
 # that the function preludes are of a minimal and predictable form.
 $(PY_BUILD)/nlr%.o: CFLAGS += -Os

 # emitters

 $(PY_BUILD)/emitnx64.o: CFLAGS += -DN_X64
 $(PY_BUILD)/emitnx64.o: py/emitnative.c
 	$(call compile_c)

 $(PY_BUILD)/emitnx86.o: CFLAGS += -DN_X86
 $(PY_BUILD)/emitnx86.o: py/emitnative.c
 	$(call compile_c)

 $(PY_BUILD)/emitnthumb.o: CFLAGS += -DN_THUMB
 $(PY_BUILD)/emitnthumb.o: py/emitnative.c
 	$(call compile_c)

 $(PY_BUILD)/emitnarm.o: CFLAGS += -DN_ARM
 $(PY_BUILD)/emitnarm.o: py/emitnative.c
 	$(call compile_c)

 $(PY_BUILD)/emitnxtensa.o: CFLAGS += -DN_XTENSA
 $(PY_BUILD)/emitnxtensa.o: py/emitnative.c
 	$(call compile_c)

 # optimising gc for speed; 5ms down to 4ms on pybv2
 $(PY_BUILD)/gc.o: CFLAGS += $(CSUPEROPT)

 # optimising vm for speed, adds only a small amount to code size but makes a huge difference to speed (20% faster)
 $(PY_BUILD)/vm.o: CFLAGS += $(CSUPEROPT)
 # Optimizing vm.o for modern deeply pipelined CPUs with branch predictors
 # may require disabling tail jump optimization. This will make sure that
 # each opcode has its own dispatching jump which will improve branch
 # branch predictor efficiency.
 # http://article.gmane.org/gmane.comp.lang.lua.general/75426
 # http://hg.python.org/cpython/file/b127046831e2/Python/ceval.c#l828
 # http://www.emulators.com/docs/nx25_nostradamus.htm
 #-fno-crossjumping
	# where py object files go (they have a name prefix to prevent filename clashes)
	PY_BUILD = $(BUILD)/py

	# where autogenerated header files go
	HEADER_BUILD = $(BUILD)/genhdr

	# file containing qstr defs for the core Python bit
	PY_QSTR_DEFS = $(PY_SRC)/qstrdefs.h

	# If qstr autogeneration is not disabled we specify the output header
	# for all collected qstrings.
	ifneq ($(QSTR_AUTOGEN_DISABLE),1)
	QSTR_DEFS_COLLECTED = $(HEADER_BUILD)/qstrdefs.collected.h
	endif

	# some code is performance bottleneck and compiled with other optimization options
	CSUPEROPT = -O3

	INC += -I../lib
	INC += -I../lib/netutils

	# this sets the config file for FatFs
	CFLAGS_MOD += -DFFCONF_H=\"lib/oofatfs/ffconf.h\"

	ifeq ($(MICROPY_PY_USSL),1)
	CFLAGS_MOD += -DMICROPY_PY_USSL=1
	ifeq ($(MICROPY_SSL_AXTLS),1)
	CFLAGS_MOD += -DMICROPY_SSL_AXTLS=1 -I../lib/axtls/ssl -I../lib/axtls/crypto -I../lib/axtls/config
	LDFLAGS_MOD += -Lbuild -laxtls
	else ifeq ($(MICROPY_SSL_MBEDTLS),1)
	# Can be overriden by ports which have "builtin" mbedTLS
	MICROPY_SSL_MBEDTLS_INCLUDE ?= ../lib/mbedtls/include
	CFLAGS_MOD += -DMICROPY_SSL_MBEDTLS=1 -I$(MICROPY_SSL_MBEDTLS_INCLUDE)
	LDFLAGS_MOD += -L../lib/mbedtls/library -lmbedx509 -lmbedtls -lmbedcrypto
	endif
	endif

	#ifeq ($(MICROPY_PY_LWIP),1)
	#CFLAGS_MOD += -DMICROPY_PY_LWIP=1 -I../lib/lwip/src/include -I../lib/lwip/src/include/ipv4 -I../extmod/lwip-include
	#endif

	ifeq ($(MICROPY_PY_LWIP),1)
	LWIP_DIR = lib/lwip/src
	INC += -I../lib/lwip/src/include -I../lib/lwip/src/include/ipv4 -I../extmod/lwip-include
	CFLAGS_MOD += -DMICROPY_PY_LWIP=1
	SRC_MOD += extmod/modlwip.c lib/netutils/netutils.c
	SRC_MOD += $(addprefix $(LWIP_DIR)/,\
	core/def.c \
	core/dns.c \
	core/init.c \
	core/mem.c \
	core/memp.c \
	core/netif.c \
	core/pbuf.c \
	core/raw.c \
	core/stats.c \
	core/sys.c \
	core/tcp.c \
	core/tcp_in.c \
	core/tcp_out.c \
	core/timers.c \
	core/udp.c \
	core/ipv4/autoip.c \
	core/ipv4/icmp.c \
	core/ipv4/igmp.c \
	core/ipv4/inet.c \
	core/ipv4/inet_chksum.c \
	core/ipv4/ip_addr.c \
	core/ipv4/ip.c \
	core/ipv4/ip_frag.c \
	)
	ifeq ($(MICROPY_PY_LWIP_SLIP),1)
	CFLAGS_MOD += -DMICROPY_PY_LWIP_SLIP=1
	SRC_MOD += $(LWIP_DIR)/netif/slipif.c
	endif
	endif

	ifeq ($(MICROPY_PY_BTREE),1)
	BTREE_DIR = lib/berkeley-db-1.xx
	CFLAGS_MOD += -D__DBINTERFACE_PRIVATE=1 -Dmpool_error=printf -Dabort=abort_ -Dvirt_fd_t=mp_obj_t "-DVIRT_FD_T_HEADER=<py/obj.h>"
	INC += -I../$(BTREE_DIR)/PORT/include
	SRC_MOD += extmod/modbtree.c
	SRC_MOD += $(addprefix $(BTREE_DIR)/,\
	btree/bt_close.c \
	btree/bt_conv.c \
	btree/bt_debug.c \
	btree/bt_delete.c \
	btree/bt_get.c \
	btree/bt_open.c \
	btree/bt_overflow.c \
	btree/bt_page.c \
	btree/bt_put.c \
	btree/bt_search.c \
	btree/bt_seq.c \
	btree/bt_split.c \
	btree/bt_utils.c \
	mpool/mpool.c \
	)
	CFLAGS_MOD += -DMICROPY_PY_BTREE=1
	# we need to suppress certain warnings to get berkeley-db to compile cleanly
	$(BUILD)/$(BTREE_DIR)/%.o: CFLAGS += -Wno-old-style-definition -Wno-sign-compare -Wno-unused-parameter
	endif

	# py object files
	PY_O_BASENAME = \
	mpstate.o \
	nlrx86.o \
	nlrx64.o \
	nlrthumb.o \
	nlrxtensa.o \
	nlrsetjmp.o \
	malloc.o \
	gc.o \
	qstr.o \
	vstr.o \
	mpprint.o \
	unicode.o \
	mpz.o \
	reader.o \
	lexer.o \
	parse.o \
	scope.o \
	compile.o \
	emitcommon.o \
	emitbc.o \
	asmbase.o \
	asmx64.o \
	emitnx64.o \
	asmx86.o \
	emitnx86.o \
	asmthumb.o \
	emitnthumb.o \
	emitinlinethumb.o \
	asmarm.o \
	emitnarm.o \
	asmxtensa.o \
	emitnxtensa.o \
	emitinlinextensa.o \
	formatfloat.o \
	parsenumbase.o \
	parsenum.o \
	emitglue.o \
	persistentcode.o \
	runtime.o \
	runtime_utils.o \
	scheduler.o \
	nativeglue.o \
	stackctrl.o \
	argcheck.o \
	warning.o \
	map.o \
	obj.o \
	objarray.o \
	objattrtuple.o \
	objbool.o \
	objboundmeth.o \
	objcell.o \
	objclosure.o \
	objcomplex.o \
	objdict.o \
	objenumerate.o \
	objexcept.o \
	objfilter.o \
	objfloat.o \
	objfun.o \
	objgenerator.o \
	objgetitemiter.o \
	objint.o \
	objint_longlong.o \
	objint_mpz.o \
	objlist.o \
	objmap.o \
	objmodule.o \
	objobject.o \
	objpolyiter.o \
	objproperty.o \
	objnone.o \
	objnamedtuple.o \
	objrange.o \
	objreversed.o \
	objset.o \
	objsingleton.o \
	objslice.o \
	objstr.o \
	objstrunicode.o \
	objstringio.o \
	objtuple.o \
	objtype.o \
	objzip.o \
	opmethods.o \
	sequence.o \
	stream.o \
	binary.o \
	builtinimport.o \
	builtinevex.o \
	builtinhelp.o \
	modarray.o \
	modbuiltins.o \
	modcollections.o \
	modgc.o \
	modio.o \
	modmath.o \
	modcmath.o \
	modmicropython.o \
	modstruct.o \
	modsys.o \
	moduerrno.o \
	modthread.o \
	vm.o \
	bc.o \
	showbc.o \
	repl.o \
	smallint.o \
	frozenmod.o \
	../extmod/moductypes.o \
	../extmod/modujson.o \
	../extmod/modure.o \
	../extmod/moduzlib.o \
	../extmod/moduheapq.o \
	../extmod/modutimeq.o \
	../extmod/moduhashlib.o \
	../extmod/modubinascii.o \
	../extmod/virtpin.o \
	../extmod/machine_mem.o \
	../extmod/machine_pinbase.o \
	../extmod/machine_signal.o \
	../extmod/machine_pulse.o \
	../extmod/machine_i2c.o \
	../extmod/machine_spi.o \
	../extmod/modussl_axtls.o \
	../extmod/modussl_mbedtls.o \
	../extmod/modurandom.o \
	../extmod/moduselect.o \
	../extmod/modwebsocket.o \
	../extmod/modwebrepl.o \
	../extmod/modframebuf.o \
	../extmod/vfs.o \
	../extmod/vfs_reader.o \
	../extmod/vfs_fat.o \
	../extmod/vfs_fat_diskio.o \
	../extmod/vfs_fat_file.o \
	../extmod/vfs_fat_misc.o \
	../extmod/utime_mphal.o \
	../extmod/uos_dupterm.o \
	../lib/embed/abort_.o \
	../lib/utils/printf.o \

	# prepend the build destination prefix to the py object files
	PY_O = $(addprefix $(PY_BUILD)/, $(PY_O_BASENAME))

	# object file for frozen files
	ifneq ($(FROZEN_DIR),)
	PY_O += $(BUILD)/$(BUILD)/frozen.o
	endif

	# object file for frozen bytecode (frozen .mpy files)
	ifneq ($(FROZEN_MPY_DIR),)
	PY_O += $(BUILD)/$(BUILD)/frozen_mpy.o
	endif

	# Sources that may contain qstrings
	SRC_QSTR_IGNORE = nlr% emitnx86% emitnx64% emitnthumb% emitnarm% emitnxtensa%
	SRC_QSTR = $(SRC_MOD) $(addprefix py/,$(filter-out $(SRC_QSTR_IGNORE),$(PY_O_BASENAME:.o=.c)) emitnative.c)

	# Anything that depends on FORCE will be considered out-of-date
	FORCE:
	.PHONY: FORCE

	$(HEADER_BUILD)/mpversion.h: FORCE \| $(HEADER_BUILD)
	$(Q)$(PYTHON) $(PY_SRC)/makeversionhdr.py $@

	# mpconfigport.mk is optional, but changes to it may drastically change
	# overall config, so they need to be caught
	MPCONFIGPORT_MK = $(wildcard mpconfigport.mk)

	# qstr data
	# Adding an order only dependency on $(HEADER_BUILD) causes $(HEADER_BUILD) to get
	# created before we run the script to generate the .h
	# Note: we need to protect the qstr names from the preprocessor, so we wrap
	# the lines in "" and then unwrap after the preprocessor is finished.
	$(HEADER_BUILD)/qstrdefs.generated.h: $(PY_QSTR_DEFS) $(QSTR_DEFS) $(QSTR_DEFS_COLLECTED) $(PY_SRC)/makeqstrdata.py mpconfigport.h $(MPCONFIGPORT_MK) $(PY_SRC)/mpconfig.h \| $(HEADER_BUILD)
	$(ECHO) "GEN $@"
	$(Q)cat $(PY_QSTR_DEFS) $(QSTR_DEFS) $(QSTR_DEFS_COLLECTED) \| $(SED) 's/^Q(.)/"&"/' \| $(CPP) $(CFLAGS) - \| $(SED) 's/^"\(Q(.)\)"/\1/' > $(HEADER_BUILD)/qstrdefs.preprocessed.h
	$(Q)$(PYTHON) $(PY_SRC)/makeqstrdata.py $(HEADER_BUILD)/qstrdefs.preprocessed.h > $@

	# Force nlr code to always be compiled with space-saving optimisation so
	# that the function preludes are of a minimal and predictable form.
	$(PY_BUILD)/nlr%.o: CFLAGS += -Os

	# emitters

	$(PY_BUILD)/emitnx64.o: CFLAGS += -DN_X64
	$(PY_BUILD)/emitnx64.o: py/emitnative.c
	$(call compile_c)

	$(PY_BUILD)/emitnx86.o: CFLAGS += -DN_X86
	$(PY_BUILD)/emitnx86.o: py/emitnative.c
	$(call compile_c)

	$(PY_BUILD)/emitnthumb.o: CFLAGS += -DN_THUMB
	$(PY_BUILD)/emitnthumb.o: py/emitnative.c
	$(call compile_c)

	$(PY_BUILD)/emitnarm.o: CFLAGS += -DN_ARM
	$(PY_BUILD)/emitnarm.o: py/emitnative.c
	$(call compile_c)

	$(PY_BUILD)/emitnxtensa.o: CFLAGS += -DN_XTENSA
	$(PY_BUILD)/emitnxtensa.o: py/emitnative.c
	$(call compile_c)

	# optimising gc for speed; 5ms down to 4ms on pybv2
	$(PY_BUILD)/gc.o: CFLAGS += $(CSUPEROPT)

	# optimising vm for speed, adds only a small amount to code size but makes a huge difference to speed (20% faster)
	$(PY_BUILD)/vm.o: CFLAGS += $(CSUPEROPT)
	# Optimizing vm.o for modern deeply pipelined CPUs with branch predictors
	# may require disabling tail jump optimization. This will make sure that
	# each opcode has its own dispatching jump which will improve branch
	# branch predictor efficiency.
	# http://article.gmane.org/gmane.comp.lang.lua.general/75426
	# http://hg.python.org/cpython/file/b127046831e2/Python/ceval.c#l828
	# http://www.emulators.com/docs/nx25_nostradamus.htm
	#-fno-crossjumping