xref: /openbmc/u-boot/examples/standalone/Makefile (revision baefb63a) 
1#
2# (C) Copyright 2000-2006
3# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4#
5# SPDX-License-Identifier:	GPL-2.0+
6#
7
8extra-y        := hello_world
9extra-$(CONFIG_SMC91111)           += smc91111_eeprom
10extra-$(CONFIG_SMC911X)            += smc911x_eeprom
11extra-$(CONFIG_SPI_FLASH_ATMEL)    += atmel_df_pow2
12extra-$(CONFIG_PPC)                += sched
13
14#
15# Some versions of make do not handle trailing white spaces properly;
16# leading to build failures. The problem was found with GNU Make 3.80.
17# Using 'strip' as a workaround for the problem.
18#
19ELF := $(strip $(extra-y))
20
21extra-y += $(addsuffix .srec,$(extra-y)) $(addsuffix .bin,$(extra-y))
22clean-files  := *.srec *.bin
23
24COBJS	:= $(ELF:=.o)
25
26LIB	= $(obj)/libstubs.o
27
28LIBOBJS-$(CONFIG_PPC) += ppc_longjmp.o ppc_setjmp.o
29LIBOBJS-y += stubs.o
30
31.SECONDARY: $(call objectify,$(COBJS))
32targets += $(patsubst $(obj)/%,%,$(LIB)) $(COBJS) $(LIBOBJS-y)
33
34LIBOBJS	:= $(addprefix $(obj)/,$(LIBOBJS-y))
35ELF	:= $(addprefix $(obj)/,$(ELF))
36
37# For PowerPC there's no need to compile standalone applications as a
38# relocatable executable.  The relocation data is not needed, and
39# also causes the entry point of the standalone application to be
40# inconsistent.
41ifeq ($(CONFIG_PPC),y)
42PLATFORM_CPPFLAGS := $(filter-out $(RELFLAGS),$(PLATFORM_CPPFLAGS))
43endif
44
45# We don't want gcc reordering functions if possible.  This ensures that an
46# application's entry point will be the first function in the application's
47# source file.
48ccflags-y += $(call cc-option,-fno-toplevel-reorder)
49
50#########################################################################
51
52quiet_cmd_link_lib = LD      $@
53      cmd_link_lib = $(LD) $(ld_flags) -r -o $@ $(filter $(LIBOBJS), $^)
54
55$(LIB):	$(LIBOBJS) FORCE
56	$(call if_changed,link_lib)
57
58quiet_cmd_link_elf = LD      $@
59      cmd_link_elf = $(LD) $(LDFLAGS) -g -Ttext $(CONFIG_STANDALONE_LOAD_ADDR) \
60		     -o $@ -e $(SYM_PREFIX)$(@F) $< $(LIB) $(PLATFORM_LIBGCC)
61
62$(ELF): $(obj)/%: $(obj)/%.o $(LIB) FORCE
63	$(call if_changed,link_elf)
64
65$(obj)/%.srec: OBJCOPYFLAGS := -O srec
66$(obj)/%.srec: $(obj)/% FORCE
67	$(call if_changed,objcopy)
68
69$(obj)/%.bin: OBJCOPYFLAGS := -O binary
70$(obj)/%.bin: $(obj)/% FORCE
71	$(call if_changed,objcopy)
72
73# some files can only build in ARM or THUMB2, not THUMB1
74
75ifdef CONFIG_SYS_THUMB_BUILD
76ifndef CONFIG_HAS_THUMB2
77
78CFLAGS_stubs.o := -marm
79
80endif
81endif
82