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https://github.com/brain-hackers/u-boot-brain
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dbb7234b2a
Until now building the x86 arch boards required 32-bit toolchain. As many x86_64 toolchains come with 32-bit support (multilib) that's a good idea to enable build with such toolchains. The change required was to specify the usage of 32-bit explicitly to the compiler and the linker (-m32 and -m elf_i386 flags) and locate the right libgcc path. Signed-off-by: Vasili Galka <vvv444@gmail.com> Acked-by: Simon Glass <sjg@chromium.org>
34 lines
1.1 KiB
Makefile
34 lines
1.1 KiB
Makefile
#
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# (C) Copyright 2000-2002
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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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CONFIG_STANDALONE_LOAD_ADDR ?= 0x40000
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PLATFORM_CPPFLAGS += -fno-strict-aliasing
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PLATFORM_CPPFLAGS += -mregparm=3
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PLATFORM_CPPFLAGS += -fomit-frame-pointer
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PF_CPPFLAGS_X86 := $(call cc-option, -fno-toplevel-reorder, \
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$(call cc-option, -fno-unit-at-a-time)) \
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$(call cc-option, -mpreferred-stack-boundary=2)
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PLATFORM_CPPFLAGS += $(PF_CPPFLAGS_X86)
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PLATFORM_CPPFLAGS += -fno-dwarf2-cfi-asm
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PLATFORM_CPPFLAGS += -DREALMODE_BASE=0x7c0
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PLATFORM_CPPFLAGS += -march=i386 -m32
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# Support generic board on x86
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__HAVE_ARCH_GENERIC_BOARD := y
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PLATFORM_RELFLAGS += -ffunction-sections -fvisibility=hidden
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PLATFORM_LDFLAGS += --emit-relocs -Bsymbolic -Bsymbolic-functions -m elf_i386
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LDFLAGS_FINAL += --gc-sections -pie
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LDFLAGS_FINAL += --wrap=__divdi3 --wrap=__udivdi3
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LDFLAGS_FINAL += --wrap=__moddi3 --wrap=__umoddi3
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export NORMAL_LIBGCC = $(shell $(CC) $(PLATFORM_CPPFLAGS) -print-libgcc-file-name)
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CONFIG_USE_PRIVATE_LIBGCC := arch/x86/lib
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