[OE-core] [PATCH] kernel: Fix QA buildpaths warning for kernel modules

[He Zhe]

Hi Bruce,

I should have cc this to you.

Thanks,
Zhe

On 2018年02月05日 14:54, zhe.he at windriver.com wrote:
> From: He Zhe <zhe.he at windriver.com>
>
> CFLAGS is unset during kernel_do_compile and thus the default build
> path substitutions in DEBUG_PREFIX_MAP are missing.
>
> To enhance reproducible build for kernel modules, such as lttng-modules
> and cryptodev-module, this patch appends them, plus substitution of
> STAGING_KERNEL_DIR, to KERNEL_CC.
>
> Signed-off-by: He Zhe <zhe.he at windriver.com>
> ---
>  meta/classes/kernel-arch.bbclass | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/meta/classes/kernel-arch.bbclass b/meta/classes/kernel-arch.bbclass
> index cf0edb6..e0fe22b 100644
> --- a/meta/classes/kernel-arch.bbclass
> +++ b/meta/classes/kernel-arch.bbclass
> @@ -57,7 +57,7 @@ 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 ${HOST_CC_KERNEL_ARCH} -fuse-ld=bfd"
> +KERNEL_CC = "${CCACHE}${HOST_PREFIX}gcc ${HOST_CC_KERNEL_ARCH} -fuse-ld=bfd ${DEBUG_PREFIX_MAP} -fdebug-prefix-map=${STAGING_KERNEL_DIR}=${KERNEL_SRC_PATH}"
>  KERNEL_LD = "${CCACHE}${HOST_PREFIX}ld.bfd ${HOST_LD_KERNEL_ARCH}"
>  KERNEL_AR = "${CCACHE}${HOST_PREFIX}ar ${HOST_AR_KERNEL_ARCH}"
>  TOOLCHAIN = "gcc"