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_MPC5xxx) += interrupt 13extra-$(CONFIG_PPC) += sched 14 15# 16# Some versions of make do not handle trailing white spaces properly; 17# leading to build failures. The problem was found with GNU Make 3.80. 18# Using 'strip' as a workaround for the problem. 19# 20ELF := $(strip $(extra-y)) 21 22extra-y += $(addsuffix .srec,$(extra-y)) $(addsuffix .bin,$(extra-y)) 23clean-files := *.srec *.bin 24 25COBJS := $(ELF:=.o) 26 27LIB = $(obj)/libstubs.o 28 29LIBOBJS-$(CONFIG_PPC) += ppc_longjmp.o ppc_setjmp.o 30LIBOBJS-y += stubs.o 31 32.SECONDARY: $(call objectify,$(COBJS)) 33targets += $(patsubst $(obj)/%,%,$(LIB)) $(COBJS) $(LIBOBJS-y) 34 35LIBOBJS := $(addprefix $(obj)/,$(LIBOBJS-y)) 36ELF := $(addprefix $(obj)/,$(ELF)) 37 38# For PowerPC there's no need to compile standalone applications as a 39# relocatable executable. The relocation data is not needed, and 40# also causes the entry point of the standalone application to be 41# inconsistent. 42ifeq ($(CONFIG_PPC),y) 43PLATFORM_CPPFLAGS := $(filter-out $(RELFLAGS),$(PLATFORM_CPPFLAGS)) 44endif 45 46# We don't want gcc reordering functions if possible. This ensures that an 47# application's entry point will be the first function in the application's 48# source file. 49ccflags-y += $(call cc-option,-fno-toplevel-reorder) 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) $(LDFLAGS) -g -Ttext $(CONFIG_STANDALONE_LOAD_ADDR) \ 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