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-$(CONFIG_MPC8260) += mem_to_mem_idma2intr 14extra-$(CONFIG_PPC) += sched 15 16# 17# Some versions of make do not handle trailing white spaces properly; 18# leading to build failures. The problem was found with GNU Make 3.80. 19# Using 'strip' as a workaround for the problem. 20# 21ELF := $(strip $(extra-y)) 22 23extra-y += $(addsuffix .srec,$(extra-y)) $(addsuffix .bin,$(extra-y)) 24clean-files := *.srec *.bin 25 26COBJS := $(ELF:=.o) 27 28LIB = $(obj)/libstubs.o 29 30LIBOBJS-$(CONFIG_PPC) += ppc_longjmp.o ppc_setjmp.o 31LIBOBJS-y += stubs.o 32 33.SECONDARY: $(call objectify,$(COBJS)) 34targets += $(patsubst $(obj)/%,%,$(LIB)) $(COBJS) $(LIBOBJS-y) 35 36LIBOBJS := $(addprefix $(obj)/,$(LIBOBJS-y)) 37ELF := $(addprefix $(obj)/,$(ELF)) 38 39# For PowerPC there's no need to compile standalone applications as a 40# relocatable executable. The relocation data is not needed, and 41# also causes the entry point of the standalone application to be 42# inconsistent. 43ifeq ($(CONFIG_PPC),y) 44PLATFORM_CPPFLAGS := $(filter-out $(RELFLAGS),$(PLATFORM_CPPFLAGS)) 45endif 46 47# We don't want gcc reordering functions if possible. This ensures that an 48# application's entry point will be the first function in the application's 49# source file. 50ccflags-y += $(call cc-option,-fno-toplevel-reorder) 51 52######################################################################### 53 54quiet_cmd_link_lib = LD $@ 55 cmd_link_lib = $(LD) $(ld_flags) -r -o $@ $(filter $(LIBOBJS), $^) 56 57$(LIB): $(LIBOBJS) FORCE 58 $(call if_changed,link_lib) 59 60quiet_cmd_link_elf = LD $@ 61 cmd_link_elf = $(LD) $(LDFLAGS) -g -Ttext $(CONFIG_STANDALONE_LOAD_ADDR) \ 62 -o $@ -e $(SYM_PREFIX)$(@F) $< $(LIB) $(PLATFORM_LIBGCC) 63 64$(ELF): $(obj)/%: $(obj)/%.o $(LIB) FORCE 65 $(call if_changed,link_elf) 66 67$(obj)/%.srec: OBJCOPYFLAGS := -O srec 68$(obj)/%.srec: $(obj)/% FORCE 69 $(call if_changed,objcopy) 70 71$(obj)/%.bin: OBJCOPYFLAGS := -O binary 72$(obj)/%.bin: $(obj)/% FORCE 73 $(call if_changed,objcopy) 74 75# some files can only build in ARM or THUMB2, not THUMB1 76 77ifdef CONFIG_SYS_THUMB_BUILD 78ifndef CONFIG_HAS_THUMB2 79 80CFLAGS_stubs.o := -marm 81 82endif 83endif 84