generic-poky/meta/classes/kernel-arch.bbclass
Phil Blundell 5652086c75 kernel-arch: Always use ld.bfd to link the kernel
The kernel's penchant for custom linker scripts means that it doesn't
generally get on very well with gold.  Make sure we are using the BFD
linker here no matter what the distro default is set to.

(From OE-Core rev: 5c8277610ae84740e0724b27f10dba3895d40c05)

Signed-off-by: Phil Blundell <philb@gnu.org>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
2013-04-28 12:12:21 +01:00

59 lines
2.1 KiB
Text

#
# set the ARCH environment variable for kernel compilation (including
# modules). return value must match one of the architecture directories
# in the kernel source "arch" directory
#
valid_archs = "alpha cris ia64 \
i386 x86 \
m68knommu m68k ppc powerpc powerpc64 ppc64 \
sparc sparc64 \
arm aarch64 \
m32r mips \
sh sh64 um h8300 \
parisc s390 v850 \
avr32 blackfin \
microblaze"
def map_kernel_arch(a, d):
import re
valid_archs = d.getVar('valid_archs', True).split()
if re.match('(i.86|athlon|x86.64)$', a): return 'x86'
elif re.match('armeb$', a): return 'arm'
elif re.match('aarch64$', a): return 'arm64'
elif re.match('mips(el|64|64el)$', a): return 'mips'
elif re.match('p(pc|owerpc)(|64)', a): return 'powerpc'
elif re.match('sh(3|4)$', a): return 'sh'
elif re.match('bfin', a): return 'blackfin'
elif re.match('microblazeel', a): return 'microblaze'
elif a in valid_archs: return a
else:
bb.error("cannot map '%s' to a linux kernel architecture" % a)
export ARCH = "${@map_kernel_arch(d.getVar('TARGET_ARCH', True), d)}"
def map_uboot_arch(a, d):
import re
if re.match('p(pc|owerpc)(|64)', a): return 'ppc'
elif re.match('i.86$', a): return 'x86'
return a
export UBOOT_ARCH = "${@map_uboot_arch(d.getVar('ARCH', True), d)}"
# Set TARGET_??_KERNEL_ARCH in the machine .conf to set architecture
# specific options necessary for building the kernel and modules.
TARGET_CC_KERNEL_ARCH ?= ""
HOST_CC_KERNEL_ARCH ?= "${TARGET_CC_KERNEL_ARCH}"
TARGET_LD_KERNEL_ARCH ?= ""
HOST_LD_KERNEL_ARCH ?= "${TARGET_LD_KERNEL_ARCH}"
TARGET_AR_KERNEL_ARCH ?= ""
HOST_AR_KERNEL_ARCH ?= "${TARGET_AR_KERNEL_ARCH}"
KERNEL_CC = "${CCACHE}${HOST_PREFIX}gcc ${HOST_CC_KERNEL_ARCH}"
KERNEL_LD = "${CCACHE}${HOST_PREFIX}ld.bfd ${HOST_LD_KERNEL_ARCH}"
KERNEL_AR = "${CCACHE}${HOST_PREFIX}ar ${HOST_AR_KERNEL_ARCH}"