1# SPDX-License-Identifier: GPL-2.0+ 2# 3# (C) Copyright 2000-2006 4# Wolfgang Denk, DENX Software Engineering, wd@denx.de. 5 6extra-y := hello_world 7extra-$(CONFIG_SMC91111) += smc91111_eeprom 8extra-$(CONFIG_SMC911X) += smc911x_eeprom 9extra-$(CONFIG_SPI_FLASH_ATMEL) += atmel_df_pow2 10extra-$(CONFIG_PPC) += sched 11 12# 13# Some versions of make do not handle trailing white spaces properly; 14# leading to build failures. The problem was found with GNU Make 3.80. 15# Using 'strip' as a workaround for the problem. 16# 17ELF := $(strip $(extra-y)) 18 19extra-y += $(addsuffix .srec,$(extra-y)) $(addsuffix .bin,$(extra-y)) 20clean-files := *.srec *.bin 21 22COBJS := $(ELF:=.o) 23 24LIB = $(obj)/libstubs.o 25 26LIBOBJS-$(CONFIG_PPC) += ppc_longjmp.o ppc_setjmp.o 27LIBOBJS-y += stubs.o 28 29targets += $(patsubst $(obj)/%,%,$(LIB)) $(COBJS) $(LIBOBJS-y) 30 31LIBOBJS := $(addprefix $(obj)/,$(LIBOBJS-y)) 32ELF := $(addprefix $(obj)/,$(ELF)) 33 34# For PowerPC there's no need to compile standalone applications as a 35# relocatable executable. The relocation data is not needed, and 36# also causes the entry point of the standalone application to be 37# inconsistent. 38ifeq ($(CONFIG_PPC),y) 39PLATFORM_CPPFLAGS := $(filter-out $(RELFLAGS),$(PLATFORM_CPPFLAGS)) 40endif 41 42# We don't want gcc reordering functions if possible. This ensures that an 43# application's entry point will be the first function in the application's 44# source file. 45ccflags-y += $(call cc-option,-fno-toplevel-reorder) 46 47LDFLAGS_STANDALONE += -Ttext $(CONFIG_STANDALONE_LOAD_ADDR) 48 49######################################################################### 50 51quiet_cmd_link_lib = LD $@ 52 cmd_link_lib = $(LD) $(ld_flags) -r -o $@ $(filter $(LIBOBJS), $^) 53 54$(LIB): $(LIBOBJS) FORCE 55 $(call if_changed,link_lib) 56 57quiet_cmd_link_elf = LD $@ 58 cmd_link_elf = $(LD) $(LDFLAGS) $(LDFLAGS_STANDALONE) -g \ 59 -o $@ -e $(SYM_PREFIX)$(@F) $< $(LIB) $(PLATFORM_LIBGCC) 60 61$(ELF): $(obj)/%: $(obj)/%.o $(LIB) FORCE 62 $(call if_changed,link_elf) 63 64$(obj)/%.srec: OBJCOPYFLAGS += -O srec 65$(obj)/%.srec: $(obj)/% FORCE 66 $(call if_changed,objcopy) 67 68$(obj)/%.bin: OBJCOPYFLAGS += -O binary 69$(obj)/%.bin: $(obj)/% FORCE 70 $(call if_changed,objcopy) 71 72# some files can only build in ARM or THUMB2, not THUMB1 73 74ifdef CONFIG_SYS_THUMB_BUILD 75ifndef CONFIG_HAS_THUMB2 76 77CFLAGS_stubs.o := -marm 78 79endif 80endif 81