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9b6e2c363f
The syntax CROSS_COMIPLE ?= <cross_compiler_prefix> does not work because config.mk is parsed after exporting CROSS_COMPILE. Like Linux Kernel's arch/$(ARCH)/Makefile, we must write as follows: ifeq ($(CROSS_COMPILE),) CROSS_COMPILE := <cross_compiler_prefix> endif Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
55 lines
1.6 KiB
Makefile
55 lines
1.6 KiB
Makefile
#
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# (C) Copyright 2003
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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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ifeq ($(CROSS_COMPILE),)
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CROSS_COMPILE := mips_4KC-
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endif
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# Handle special prefix in ELDK 4.0 toolchain
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ifneq (,$(findstring 4KCle,$(CROSS_COMPILE)))
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ENDIANNESS := -EL
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endif
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ifdef CONFIG_SYS_LITTLE_ENDIAN
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ENDIANNESS := -EL
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endif
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ifdef CONFIG_SYS_BIG_ENDIAN
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ENDIANNESS := -EB
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endif
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# Default to EB if no endianess is configured
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ENDIANNESS ?= -EB
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PLATFORM_CPPFLAGS += -DCONFIG_MIPS -D__MIPS__
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#
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# From Linux arch/mips/Makefile
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#
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# GCC uses -G 0 -mabicalls -fpic as default. We don't want PIC in the kernel
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# code since it only slows down the whole thing. At some point we might make
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# use of global pointer optimizations but their use of $28 conflicts with
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# the current pointer optimization.
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#
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# The DECStation requires an ECOFF kernel for remote booting, other MIPS
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# machines may also. Since BFD is incredibly buggy with respect to
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# crossformat linking we rely on the elf2ecoff tool for format conversion.
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#
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# cflags-y += -G 0 -mno-abicalls -fno-pic -pipe
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# cflags-y += -msoft-float
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# LDFLAGS_vmlinux += -G 0 -static -n -nostdlib
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# MODFLAGS += -mlong-calls
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#
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# On the other hand, we want PIC in the U-Boot code to relocate it from ROM
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# to RAM. $28 is always used as gp.
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#
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PLATFORM_CPPFLAGS += -G 0 -mabicalls -fpic $(ENDIANNESS)
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PLATFORM_CPPFLAGS += -msoft-float
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PLATFORM_LDFLAGS += -G 0 -static -n -nostdlib $(ENDIANNESS)
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PLATFORM_RELFLAGS += -ffunction-sections -fdata-sections
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LDFLAGS_FINAL += --gc-sections -pie
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OBJCOPYFLAGS += --remove-section=.dynsym
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