mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-28 15:41:40 +00:00
332f48022f
If we're building U-Boot with LTO, we don't want to use that for examples as it's more work than required. Signed-off-by: Tom Rini <trini@konsulko.com> Reviewed-by: Simon Glass <sjg@chromium.org>
82 lines
2.3 KiB
Makefile
82 lines
2.3 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0+
|
|
#
|
|
# (C) Copyright 2000-2006
|
|
# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
|
|
|
|
extra-y := hello_world
|
|
extra-$(CONFIG_SPI_FLASH_ATMEL) += atmel_df_pow2
|
|
extra-$(CONFIG_PPC) += sched
|
|
|
|
#
|
|
# Some versions of make do not handle trailing white spaces properly;
|
|
# leading to build failures. The problem was found with GNU Make 3.80.
|
|
# Using 'strip' as a workaround for the problem.
|
|
#
|
|
ELF := $(strip $(extra-y))
|
|
|
|
extra-y += $(addsuffix .srec,$(extra-y)) $(addsuffix .bin,$(extra-y))
|
|
clean-files := *.srec *.bin
|
|
|
|
COBJS := $(ELF:=.o)
|
|
|
|
LIB = $(obj)/libstubs.o
|
|
|
|
LIBOBJS-$(CONFIG_PPC) += ppc_longjmp.o ppc_setjmp.o
|
|
LIBOBJS-y += stubs.o
|
|
|
|
targets += $(patsubst $(obj)/%,%,$(LIB)) $(COBJS) $(LIBOBJS-y)
|
|
|
|
LIBOBJS := $(addprefix $(obj)/,$(LIBOBJS-y))
|
|
ELF := $(addprefix $(obj)/,$(ELF))
|
|
|
|
# Disable LTO for these builds
|
|
CFLAGS_REMOVE_hello_world.o := $(LTO_CFLAGS)
|
|
CFLAGS_REMOVE_stubs.o := $(LTO_CFLAGS)
|
|
|
|
# For PowerPC there's no need to compile standalone applications as a
|
|
# relocatable executable. The relocation data is not needed, and
|
|
# also causes the entry point of the standalone application to be
|
|
# inconsistent.
|
|
ifeq ($(CONFIG_PPC),y)
|
|
PLATFORM_CPPFLAGS := $(filter-out $(RELFLAGS),$(PLATFORM_CPPFLAGS))
|
|
endif
|
|
|
|
# We don't want gcc reordering functions if possible. This ensures that an
|
|
# application's entry point will be the first function in the application's
|
|
# source file.
|
|
ccflags-y += $(call cc-option,-fno-toplevel-reorder)
|
|
|
|
LDFLAGS_STANDALONE += -Ttext $(CONFIG_STANDALONE_LOAD_ADDR)
|
|
|
|
#########################################################################
|
|
|
|
quiet_cmd_link_lib = LD $@
|
|
cmd_link_lib = $(LD) $(ld_flags) -r -o $@ $(filter $(LIBOBJS), $^)
|
|
|
|
$(LIB): $(LIBOBJS) FORCE
|
|
$(call if_changed,link_lib)
|
|
|
|
quiet_cmd_link_elf = LD $@
|
|
cmd_link_elf = $(LD) $(KBUILD_LDFLAGS) $(LDFLAGS_STANDALONE) -g \
|
|
-o $@ -e $(SYM_PREFIX)$(@F) $< $(LIB) $(PLATFORM_LIBGCC)
|
|
|
|
$(ELF): $(obj)/%: $(obj)/%.o $(LIB) FORCE
|
|
$(call if_changed,link_elf)
|
|
|
|
$(obj)/%.srec: OBJCOPYFLAGS += -O srec
|
|
$(obj)/%.srec: $(obj)/% FORCE
|
|
$(call if_changed,objcopy)
|
|
|
|
$(obj)/%.bin: OBJCOPYFLAGS += -O binary
|
|
$(obj)/%.bin: $(obj)/% FORCE
|
|
$(call if_changed,objcopy)
|
|
|
|
# some files can only build in ARM or THUMB2, not THUMB1
|
|
|
|
ifdef CONFIG_SYS_THUMB_BUILD
|
|
ifndef CONFIG_HAS_THUMB2
|
|
|
|
CFLAGS_stubs.o := -marm
|
|
|
|
endif
|
|
endif
|