mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-16 09:48:16 +00:00
6825a95b0b
Now we are ready to switch over to real Kbuild.
This commit disables temporary scripts:
scripts/{Makefile.build.tmp, Makefile.host.tmp}
and enables real Kbuild scripts:
scripts/{Makefile.build,Makefile.host,Makefile.lib}.
This switch is triggered by the line in scripts/Kbuild.include
-build := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.build.tmp obj
+build := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.build obj
We need to adjust some build scripts for U-Boot.
But smaller amount of modification is preferable.
Additionally, we need to fix compiler flags which are
locally added or removed.
In Kbuild, it is not allowed to change CFLAGS locally.
Instead, ccflags-y, asflags-y, cppflags-y,
CFLAGS_$(basetarget).o, CFLAGS_REMOVE_$(basetarget).o
are prepared for that purpose.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Tested-by: Gerhard Sittig <gsi@denx.de>
83 lines
2.4 KiB
Makefile
83 lines
2.4 KiB
Makefile
#
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# (C) Copyright 2000-2006
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# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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#
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# SPDX-License-Identifier: GPL-2.0+
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#
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ifdef FTRACE
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ccflags-y += -finstrument-functions -DFTRACE
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endif
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extra-y := hello_world
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extra-$(CONFIG_SMC91111) += smc91111_eeprom
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extra-$(CONFIG_SMC911X) += smc911x_eeprom
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extra-$(CONFIG_SPI_FLASH_ATMEL) += atmel_df_pow2
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extra-$(CONFIG_MPC5xxx) += interrupt
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extra-$(CONFIG_8xx) += test_burst timer
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extra-$(CONFIG_8260) += mem_to_mem_idma2intr
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extra-$(CONFIG_PPC) += sched
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#
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# Some versions of make do not handle trailing white spaces properly;
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# leading to build failures. The problem was found with GNU Make 3.80.
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# Using 'strip' as a workaround for the problem.
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#
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ELF := $(strip $(extra-y))
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extra-y += $(addsuffix .srec,$(extra-y)) $(addsuffix .bin,$(extra-y))
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clean-files := $(extra-) $(addsuffix .srec,$(extra-)) $(addsuffix .bin,$(extra-))
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COBJS := $(ELF:=.o)
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LIB = $(obj)/libstubs.o
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LIBAOBJS-$(CONFIG_PPC) += ppc_longjmp.o ppc_setjmp.o
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LIBAOBJS-$(CONFIG_8xx) += test_burst_lib.o
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LIBAOBJS := $(LIBAOBJS-y)
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LIBCOBJS = stubs.o
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.SECONDARY: $(call objectify,$(COBJS))
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targets += $(patsubst $(obj)/%,%,$(LIB)) $(COBJS) $(LIBAOBJS) $(LIBCOBJS)
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LIBOBJS = $(addprefix $(obj)/,$(LIBAOBJS) $(LIBCOBJS))
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ELF := $(addprefix $(obj)/,$(ELF))
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gcclibdir := $(shell dirname `$(CC) -print-libgcc-file-name`)
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# For PowerPC there's no need to compile standalone applications as a
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# relocatable executable. The relocation data is not needed, and
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# also causes the entry point of the standalone application to be
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# inconsistent.
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ifeq ($(ARCH),powerpc)
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# FIX ME
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CPPFLAGS := $(filter-out $(RELFLAGS), $(CPPFLAGS))
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endif
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# We don't want gcc reordering functions if possible. This ensures that an
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# application's entry point will be the first function in the application's
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# source file.
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ccflags-y += $(call cc-option,-fno-toplevel-reorder)
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#########################################################################
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quiet_cmd_link_lib = LD $@
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cmd_link_lib = $(LD) $(ld_flags) -r -o $@ $(filter $(LIBOBJS), $^)
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$(LIB): $(LIBOBJS) FORCE
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$(call if_changed,link_lib)
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$(ELF):
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$(obj)/%: $(obj)/%.o $(LIB)
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$(LD) $(LDFLAGS) -g -Ttext $(CONFIG_STANDALONE_LOAD_ADDR) \
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-o $@ -e $(SYM_PREFIX)$(notdir $(<:.o=)) $< $(LIB) \
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-L$(gcclibdir) -lgcc
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$(obj)/%.srec: $(obj)/%
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$(OBJCOPY) -O srec $< $@ 2>/dev/null
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$(obj)/%.bin: $(obj)/%
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$(OBJCOPY) -O binary $< $@ 2>/dev/null
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