[OE-core] [PATCH] grub2: Disable address-of-packed-member warnings

[Richard Purdie]

On Wed, 2019-02-06 at 00:44 -0800, Khem Raj wrote:
> gcc9 has turned this warning into error when -Werror is used, lets
> paper
> it over by turning it into a warning for now
> 
> Fixes
> error: taking address of packed member of 'struct head' may result in
> an unaligned pointer value [-Werror=address-of-packed-member]
> 
> Signed-off-by: Khem Raj <raj.khem at gmail.com>
> ---
>  meta/recipes-bsp/grub/grub2.inc | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/meta/recipes-bsp/grub/grub2.inc b/meta/recipes-
> bsp/grub/grub2.inc
> index 8e0f86217c..28e1c210e8 100644
> --- a/meta/recipes-bsp/grub/grub2.inc
> +++ b/meta/recipes-bsp/grub/grub2.inc
> @@ -60,7 +60,7 @@ BUILD_CPPFLAGS = ""
>  BUILD_CFLAGS = ""
>  BUILD_CXXFLAGS = ""
>  BUILD_LDFLAGS = ""
> -
> +CPPFLAGS += "-Wno-error=address-of-packed-member"
>  do_configure_prepend() {
>  	# The grub2 configure script uses variables such as
> TARGET_CFLAGS etc
>  	# for its own purposes. Remove the OE versions from the
> environment to

This failed all over the place, e.g.:

https://autobuilder.yoctoproject.org/typhoon/#/builders/48/builds/264

Cheers,

Richard