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kernel-arch: Force BFD kernel when using gcc for linking 

We redefine LD to point to ld.bfd when building kernel, which works in
most cases since kbuild system calls out for bare LD most of the time,
however some of newer kernels e.g. 4.1+ have some code added which can
call gcc directly to do the linking job e.g. arm vdso code

This causes build failures when we have configured the default cross
toolchain to use gold linker as default. Errors like

BFD: arch/arm/vdso/vdso.so: Not enough room for program headers, try
linking with -N
| arm-angstrom-linux-gnueabi-objcopy:arch/arm/vdso/vdso.so[.hash]: Bad
value

start happening.

With this patch we force gcc to choose bfd linker as well

(From OE-Core rev: 5724e4d245f142ac6fb1ea211503fd220683354d)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Khem Raj 2015-08-19 10:44:56 -07:00 committed by Richard Purdie
parent a6a0251f07
commit aced11f4dc
1 changed files with 1 additions and 1 deletions
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meta/classes/kernel-arch.bbclass
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@ -53,7 +53,7 @@ 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 ${HOST_CC_KERNEL_ARCH}"
KERNEL_CC = "${CCACHE}${HOST_PREFIX}gcc ${HOST_CC_KERNEL_ARCH} -fuse-ld=bfd"
KERNEL_LD = "${CCACHE}${HOST_PREFIX}ld.bfd ${HOST_LD_KERNEL_ARCH}"
KERNEL_AR = "${CCACHE}${HOST_PREFIX}ar ${HOST_AR_KERNEL_ARCH}"