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 29.SECONDARY: $(call objectify,$(COBJS)) 30targets += $(patsubst $(obj)/%,%,$(LIB)) $(COBJS) $(LIBOBJS-y) 31 32LIBOBJS := $(addprefix $(obj)/,$(LIBOBJS-y)) 33ELF := $(addprefix $(obj)/,$(ELF)) 34 35# For PowerPC there's no need to compile standalone applications as a 36# relocatable executable. The relocation data is not needed, and 37# also causes the entry point of the standalone application to be 38# inconsistent. 39ifeq ($(CONFIG_PPC),y) 40PLATFORM_CPPFLAGS := $(filter-out $(RELFLAGS),$(PLATFORM_CPPFLAGS)) 41endif 42 43# We don't want gcc reordering functions if possible. This ensures that an 44# application's entry point will be the first function in the application's 45# source file. 46ccflags-y += $(call cc-option,-fno-toplevel-reorder) 47 48LDFLAGS_STANDALONE += -Ttext $(CONFIG_STANDALONE_LOAD_ADDR) 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) $(LDFLAGS_STANDALONE) -g \ 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