[OE-core] [PATCH 1/4] kernel.bbclass, module-base.bbclass: Use CC to form KERNEL_CC

[McClintock Matthew-B29882]

On Sat, Jan 19, 2013 at 4:40 PM, Khem Raj <raj.khem at gmail.com> wrote:
> kernel compiler is not special and we currently have it so
> we want to pass -march and -mtune options as CFLAGS to kernel
> build so that compiler picks the right subarch flags when
> compiling assembly files in particular. Otherwise defaults
> are chosen which may not be right in many case e.g. when
> compiling kernel for collie machine we should use arch=armv4
> but it uses toolchain/as defaults which is armv5te
>
> in some case e.g. thumb1 we know that kernel can not be compiled
> in thumb1 mode so we can provide that information e.g. -marm
> option through KERNEL_HOST_CC_ARCH variable as we do now
>
> Signed-off-by: Khem Raj <raj.khem at gmail.com>
> ---
>  meta/classes/kernel-arch.bbclass |   13 +++++++++++++
>  meta/classes/kernel.bbclass      |   16 +---------------
>  meta/classes/module-base.bbclass |   16 ----------------
>  3 files changed, 14 insertions(+), 31 deletions(-)
>
> diff --git a/meta/classes/kernel-arch.bbclass b/meta/classes/kernel-arch.bbclass
> index b3b78b6..a51e82b 100644
> --- a/meta/classes/kernel-arch.bbclass
> +++ b/meta/classes/kernel-arch.bbclass
> @@ -43,3 +43,16 @@ def map_uboot_arch(a, d):
>
>  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 = "${CC} ${HOST_CC_KERNEL_ARCH}"

Why change to ${CC} from "${CCACHE}${HOST_PREFIX}gcc${KERNEL_CCSUFFIX}?

It breaks some kernel builds we have...

-M