1 # SPDX-License-Identifier: GPL-2.0+
3 # (C) Copyright 2000-2006
4 # Wolfgang Denk, DENX Software Engineering, wd@denx.de.
7 extra-$(CONFIG_SPI_FLASH_ATMEL) += atmel_df_pow2
8 extra-$(CONFIG_PPC) += sched
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.
15 ELF := $(strip $(extra-y))
17 extra-y += $(addsuffix .srec,$(extra-y)) $(addsuffix .bin,$(extra-y))
18 clean-files := *.srec *.bin
22 LIB = $(obj)/libstubs.o
24 LIBOBJS-$(CONFIG_PPC) += ppc_longjmp.o ppc_setjmp.o
27 targets += $(patsubst $(obj)/%,%,$(LIB)) $(COBJS) $(LIBOBJS-y)
29 LIBOBJS := $(addprefix $(obj)/,$(LIBOBJS-y))
30 ELF := $(addprefix $(obj)/,$(ELF))
32 # Disable LTO for these builds
33 CFLAGS_REMOVE_hello_world.o := $(LTO_CFLAGS)
34 CFLAGS_REMOVE_stubs.o := $(LTO_CFLAGS)
36 # For PowerPC there's no need to compile standalone applications as a
37 # relocatable executable. The relocation data is not needed, and
38 # also causes the entry point of the standalone application to be
40 ifeq ($(CONFIG_PPC),y)
41 PLATFORM_CPPFLAGS := $(filter-out $(RELFLAGS),$(PLATFORM_CPPFLAGS))
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
47 ccflags-y += $(call cc-option,-fno-toplevel-reorder)
49 LDFLAGS_STANDALONE += -Ttext $(CONFIG_STANDALONE_LOAD_ADDR)
51 #########################################################################
53 quiet_cmd_link_lib = LD $@
54 cmd_link_lib = $(LD) $(ld_flags) -r -o $@ $(filter $(LIBOBJS), $^)
56 $(LIB): $(LIBOBJS) FORCE
57 $(call if_changed,link_lib)
59 quiet_cmd_link_elf = LD $@
60 cmd_link_elf = $(LD) $(KBUILD_LDFLAGS) $(LDFLAGS_STANDALONE) -g \
61 -o $@ -e $(SYM_PREFIX)$(@F) $< $(LIB) $(PLATFORM_LIBGCC)
63 $(ELF): $(obj)/%: $(obj)/%.o $(LIB) FORCE
64 $(call if_changed,link_elf)
66 $(obj)/%.srec: OBJCOPYFLAGS += -O srec
67 $(obj)/%.srec: $(obj)/% FORCE
68 $(call if_changed,objcopy)
70 $(obj)/%.bin: OBJCOPYFLAGS += -O binary
71 $(obj)/%.bin: $(obj)/% FORCE
72 $(call if_changed,objcopy)
74 # some files can only build in ARM or THUMB2, not THUMB1
76 ifdef CONFIG_SYS_THUMB_BUILD
77 ifndef CONFIG_HAS_THUMB2
79 CFLAGS_stubs.o := -marm