Makefile
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#
# (C) Copyright 2000-2006
# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
#
# SPDX-License-Identifier: GPL-2.0+
#
extra-y := hello_world
extra-$(CONFIG_SMC91111) += smc91111_eeprom
extra-$(CONFIG_SMC911X) += smc911x_eeprom
extra-$(CONFIG_SPI_FLASH_ATMEL) += atmel_df_pow2
extra-$(CONFIG_MPC5xxx) += interrupt
extra-$(CONFIG_8xx) += test_burst timer
extra-$(CONFIG_MPC8260) += mem_to_mem_idma2intr
extra-$(CONFIG_PPC) += sched
#
# Some versions of make do not handle trailing white spaces properly;
# leading to build failures. The problem was found with GNU Make 3.80.
# Using 'strip' as a workaround for the problem.
#
ELF := $(strip $(extra-y))
extra-y += $(addsuffix .srec,$(extra-y)) $(addsuffix .bin,$(extra-y))
clean-files := *.srec *.bin
COBJS := $(ELF:=.o)
LIB = $(obj)/libstubs.o
LIBOBJS-$(CONFIG_PPC) += ppc_longjmp.o ppc_setjmp.o
LIBOBJS-$(CONFIG_8xx) += test_burst_lib.o
LIBOBJS-y += stubs.o
.SECONDARY: $(call objectify,$(COBJS))
targets += $(patsubst $(obj)/%,%,$(LIB)) $(COBJS) $(LIBOBJS-y)
LIBOBJS := $(addprefix $(obj)/,$(LIBOBJS-y))
ELF := $(addprefix $(obj)/,$(ELF))
# For PowerPC there's no need to compile standalone applications as a
# relocatable executable. The relocation data is not needed, and
# also causes the entry point of the standalone application to be
# inconsistent.
ifeq ($(CONFIG_PPC),y)
PLATFORM_CPPFLAGS := $(filter-out $(RELFLAGS),$(PLATFORM_CPPFLAGS))
endif
# We don't want gcc reordering functions if possible. This ensures that an
# application's entry point will be the first function in the application's
# source file.
ccflags-y += $(call cc-option,-fno-toplevel-reorder)
#########################################################################
quiet_cmd_link_lib = LD $@
cmd_link_lib = $(LD) $(ld_flags) -r -o $@ $(filter $(LIBOBJS), $^)
$(LIB): $(LIBOBJS) FORCE
$(call if_changed,link_lib)
quiet_cmd_link_elf = LD $@
cmd_link_elf = $(LD) $(LDFLAGS) -g -Ttext $(CONFIG_STANDALONE_LOAD_ADDR) \
-o $@ -e $(SYM_PREFIX)$(@F) $< $(LIB) $(PLATFORM_LIBGCC)
$(ELF): $(obj)/%: $(obj)/%.o $(LIB) FORCE
$(call if_changed,link_elf)
$(obj)/%.srec: OBJCOPYFLAGS := -O srec
$(obj)/%.srec: $(obj)/% FORCE
$(call if_changed,objcopy)
$(obj)/%.bin: OBJCOPYFLAGS := -O binary
$(obj)/%.bin: $(obj)/% FORCE
$(call if_changed,objcopy)