d503ac531a
Commita0f97e06a4("kbuild: enable 'make CFLAGS=...' to add additional options to CC") renamed CFLAGS to KBUILD_CFLAGS. Commit222d394d30("kbuild: enable 'make AFLAGS=...' to add additional options to AS") renamed AFLAGS to KBUILD_AFLAGS. Commit06c5040cdb("kbuild: enable 'make CPPFLAGS=...' to add additional options to CPP") renamed CPPFLAGS to KBUILD_CPPFLAGS. For some reason, LDFLAGS was not renamed. Using a well-known variable like LDFLAGS may result in accidental override of the variable. Kbuild generally uses KBUILD_ prefixed variables for the internally appended options, so here is one more conversion to sanitize the naming convention. I did not touch Makefiles under tools/ since the tools build system is a different world. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Reviewed-by: Palmer Dabbelt <palmer@sifive.com>
60 lines
1.6 KiB
Makefile
60 lines
1.6 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
|
|
core-y += arch/x86/crypto/
|
|
|
|
ifeq ($(CONFIG_X86_32),y)
|
|
START := 0x8048000
|
|
|
|
KBUILD_LDFLAGS += -m elf_i386
|
|
ELF_ARCH := i386
|
|
ELF_FORMAT := elf32-i386
|
|
CHECKFLAGS += -D__i386__
|
|
|
|
KBUILD_CFLAGS += $(call cc-option,-m32)
|
|
KBUILD_AFLAGS += $(call cc-option,-m32)
|
|
LINK-y += $(call cc-option,-m32)
|
|
|
|
LDS_EXTRA := -Ui386
|
|
export LDS_EXTRA
|
|
|
|
# First of all, tune CFLAGS for the specific CPU. This actually sets cflags-y.
|
|
include arch/x86/Makefile_32.cpu
|
|
|
|
# prevent gcc from keeping the stack 16 byte aligned. Taken from i386.
|
|
cflags-y += $(call cc-option,-mpreferred-stack-boundary=2)
|
|
|
|
# Prevent sprintf in nfsd from being converted to strcpy and resulting in
|
|
# an unresolved reference.
|
|
cflags-y += -ffreestanding
|
|
|
|
# Disable unit-at-a-time mode on pre-gcc-4.0 compilers, it makes gcc use
|
|
# a lot more stack due to the lack of sharing of stacklots. Also, gcc
|
|
# 4.3.0 needs -funit-at-a-time for extern inline functions.
|
|
KBUILD_CFLAGS += $(shell if [ $(cc-version) -lt 0400 ] ; then \
|
|
echo $(call cc-option,-fno-unit-at-a-time); \
|
|
else echo $(call cc-option,-funit-at-a-time); fi ;)
|
|
|
|
KBUILD_CFLAGS += $(cflags-y)
|
|
|
|
else
|
|
|
|
START := 0x60000000
|
|
|
|
KBUILD_CFLAGS += -fno-builtin -m64
|
|
|
|
CHECKFLAGS += -m64 -D__x86_64__
|
|
KBUILD_AFLAGS += -m64
|
|
KBUILD_LDFLAGS += -m elf_x86_64
|
|
KBUILD_CPPFLAGS += -m64
|
|
|
|
ELF_ARCH := i386:x86-64
|
|
ELF_FORMAT := elf64-x86-64
|
|
|
|
# Not on all 64-bit distros /lib is a symlink to /lib64. PLD is an example.
|
|
|
|
LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib64
|
|
LINK-y += -m64
|
|
|
|
# Do unit-at-a-time unconditionally on x86_64, following the host
|
|
KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time)
|
|
endif
|