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