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https://github.com/brain-hackers/u-boot-brain
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45e81f9ab3
-msingle-pic-base is a new gcc(from 4.6) option for ppc and it reduces the size of my u-boot with about 4-5 KB. While at it, add -fno-jump-tables too to save a few more bytes. e5500 core: size u-boot.bef text data bss dec hex filename 473043 23772 307104 803919 c444f u-boot.bef size u-boot.aft text data bss dec hex filename 453195 23772 307104 784071 bf6c7 u-boot.aft e500 core: size u-boot.bef text data bss dec hex filename 292998 17868 24968 335834 51fda u-boot.bef size u-boot.aft text data bss dec hex filename 288002 17868 24968 330838 50c56 u-boot.aft Signed-off-by: Joakim Tjernlund <joakim.tjernlund@infinera.com> Reviewed-by: York Sun <york.sun@nxp.com>
14 lines
492 B
Makefile
14 lines
492 B
Makefile
# SPDX-License-Identifier: GPL-2.0+
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#
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# (C) Copyright 2002,2003 Motorola Inc.
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# Xianghua Xiao, X.Xiao@motorola.com
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PLATFORM_CPPFLAGS += -Wa,-me500 -msoft-float -mno-string
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PLATFORM_RELFLAGS += -msingle-pic-base -fno-jump-tables
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# -mspe=yes is needed to have -mno-spe accepted by a buggy GCC;
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# see "[PATCH,rs6000] make -mno-spe work as expected" on
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# http://gcc.gnu.org/ml/gcc-patches/2008-04/msg00311.html
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PLATFORM_CPPFLAGS += $(call cc-option,-mspe=yes) \
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$(call cc-option,-mno-spe)
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