1# SPDX-License-Identifier: GPL-2.0+
2#
3# (C) Copyright 2000-2006
4# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5
6extra-y        := hello_world
7extra-$(CONFIG_SPI_FLASH_ATMEL)    += atmel_df_pow2
8extra-$(CONFIG_PPC)                += sched
9
10#
11# Some versions of make do not handle trailing white spaces properly;
12# leading to build failures. The problem was found with GNU Make 3.80.
13# Using 'strip' as a workaround for the problem.
14#
15ELF := $(strip $(extra-y))
16
17extra-y += $(addsuffix .srec,$(extra-y)) $(addsuffix .bin,$(extra-y))
18clean-files  := *.srec *.bin
19
20COBJS	:= $(ELF:=.o)
21
22LIB	= $(obj)/libstubs.o
23
24LIBOBJS-$(CONFIG_PPC) += ppc_longjmp.o ppc_setjmp.o
25LIBOBJS-y += stubs.o
26
27targets += $(patsubst $(obj)/%,%,$(LIB)) $(COBJS) $(LIBOBJS-y)
28
29LIBOBJS	:= $(addprefix $(obj)/,$(LIBOBJS-y))
30ELF	:= $(addprefix $(obj)/,$(ELF))
31
32# Disable LTO for these builds
33CFLAGS_REMOVE_hello_world.o := $(LTO_CFLAGS)
34CFLAGS_REMOVE_stubs.o := $(LTO_CFLAGS)
35
36# For PowerPC there's no need to compile standalone applications as a
37# relocatable executable.  The relocation data is not needed, and
38# also causes the entry point of the standalone application to be
39# inconsistent.
40ifeq ($(CONFIG_PPC),y)
41PLATFORM_CPPFLAGS := $(filter-out $(RELFLAGS),$(PLATFORM_CPPFLAGS))
42endif
43
44# We don't want gcc reordering functions if possible.  This ensures that an
45# application's entry point will be the first function in the application's
46# source file.
47ccflags-y += $(call cc-option,-fno-toplevel-reorder)
48
49LDFLAGS_STANDALONE	+= -Ttext $(CONFIG_STANDALONE_LOAD_ADDR)
50
51#########################################################################
52
53quiet_cmd_link_lib = LD      $@
54      cmd_link_lib = $(LD) $(ld_flags) -r -o $@ $(filter $(LIBOBJS), $^)
55
56$(LIB):	$(LIBOBJS) FORCE
57	$(call if_changed,link_lib)
58
59quiet_cmd_link_elf = LD      $@
60      cmd_link_elf = $(LD) $(KBUILD_LDFLAGS) $(LDFLAGS_STANDALONE) -g  \
61		     -o $@ -e $(SYM_PREFIX)$(@F) $< $(LIB) $(PLATFORM_LIBGCC)
62
63$(ELF): $(obj)/%: $(obj)/%.o $(LIB) FORCE
64	$(call if_changed,link_elf)
65
66$(obj)/%.srec: OBJCOPYFLAGS += -O srec
67$(obj)/%.srec: $(obj)/% FORCE
68	$(call if_changed,objcopy)
69
70$(obj)/%.bin: OBJCOPYFLAGS += -O binary
71$(obj)/%.bin: $(obj)/% FORCE
72	$(call if_changed,objcopy)
73
74# some files can only build in ARM or THUMB2, not THUMB1
75
76ifdef CONFIG_SYS_THUMB_BUILD
77ifndef CONFIG_HAS_THUMB2
78
79CFLAGS_stubs.o := -marm
80
81endif
82endif
83