Re: [RFC PATCH 1/5] grub-efi-native: New recipe to build GRUB EFI images

[Darren Hart <dvhart@linux.intel.com>]

On 11/24/2011 12:05 AM, Darren Hart wrote:
> Add a recipe to build the GRUB efi images. This recipe is written as
> a native recipe as the resulting GRUB utils are required to assemble
> the final image. Rather than build a native and a target recipe (and
> increase build times), this recipe builds the utils for the host and
> passes an appropriate --target argument to the GRUB configure script
> to build the modules for the target arch. The only output of this
> recipe is an EFI image in the deploy directory.

The grub-help list came through with an alternative approach:

"./configure CC=powerpc-linux-gcc  --host=ppc-linux-gnu --target=i386
--with-platform=pc TARGET_CC=i386-linux-gcc"

This would allow for building on a host of arch ppc for a target of arch
i386.

Would it be preferable then to build this as a target package and
manipuate the configure flags to use the BUILD_CC ? I presume a similar
PN rename would be desirable to account for the HOST component of the
build as I used here for the TARGET on the -native version?

--
Darren

> 
> Care is taken to ensure changing targets will force a rebuild of this
> native recipe by including the target arch in the PN.
> 
> Signed-off-by: Darren Hart <dvhart@linux.intel.com>
> ---
>  meta/recipes-bsp/grub/grub-efi-native_1.99.bb |   74 +++++++++++++++++++++++++
>  1 files changed, 74 insertions(+), 0 deletions(-)
>  create mode 100644 meta/recipes-bsp/grub/grub-efi-native_1.99.bb
> 
> diff --git a/meta/recipes-bsp/grub/grub-efi-native_1.99.bb b/meta/recipes-bsp/grub/grub-efi-native_1.99.bb
> new file mode 100644
> index 0000000..3c52ec9
> --- /dev/null
> +++ b/meta/recipes-bsp/grub/grub-efi-native_1.99.bb
> @@ -0,0 +1,74 @@
> +SUMMARY = "GRUB2 is the next-generation GRand Unified Bootloader"
> +
> +DESCRIPTION = "GRUB2 is the next generaion of a GPLed bootloader \
> +intended to unify bootloading across x86 operating systems. In \
> +addition to loading the Linux kernel, it implements the Multiboot \
> +standard, which allows for flexible loading of multiple boot images. \
> +This recipe builds an EFI binary for the target. It does not install \
> +or package anything, it only deploys a target-arch GRUB EFI image."
> +
> +HOMEPAGE = "http://www.gnu.org/software/grub/"
> +SECTION = "bootloaders"
> +PRIORITY = "optional"
> +
> +LICENSE = "GPLv3"
> +LIC_FILES_CHKSUM = "file://COPYING;md5=d32239bcb673463ab874e80d47fae504"
> +
> +# FIXME: We should be able to optionally drop freetype as a dependency
> +DEPENDS = "help2man-native"
> +RDEPENDS_${PN} = "diffutils freetype"
> +PR = "r1"
> +
> +# Native packages do not normally rebuild when the target changes.
> +# Ensure this is built once per HOST-TARGET pair.
> +PN := "grub-efi-${TRANSLATED_TARGET_ARCH}-native"
> +
> +SRC_URI = "ftp://ftp.gnu.org/gnu/grub/grub-${PV}.tar.gz"
> +
> +SRC_URI[md5sum] = "ca9f2a2d571b57fc5c53212d1d22e2b5"
> +SRC_URI[sha256sum] = "b91f420f2c51f6155e088e34ff99bea09cc1fb89585cf7c0179644e57abd28ff"
> +
> +COMPATIBLE_HOST = '(x86_64.*|i.86.*)-(linux|freebsd.*)'
> +
> +S = "${WORKDIR}/grub-${PV}"
> +
> +# Determine the target arch for the grub modules before the native class
> +# clobbers TARGET_ARCH.
> +ORIG_TARGET_ARCH := ${TARGET_ARCH}
> +python __anonymous () {
> +    import re
> +    target = d.getVar('ORIG_TARGET_ARCH', True)
> +    if target == "x86_64":
> +        grubtarget = 'x86_64'
> +        grubimage = "bootx64.efi"
> +    elif re.match('i.86', target):
> +        grubtarget = 'i386'
> +        grubimage = "bootia32.efi"
> +    else:
> +        raise bb.parse.SkipPackage("grub-efi is incompatible with target %s" % target)
> +    d.setVar("GRUB_TARGET", grubtarget)
> +    d.setVar("GRUB_IMAGE", grubimage)
> +}
> +
> +inherit autotools
> +inherit gettext
> +inherit native
> +inherit deploy
> +
> +EXTRA_OECONF = "--with-platform=efi --disable-grub-mkfont \
> +                --target=${GRUB_TARGET} --enable-efiemu=no --program-prefix=''"
> +
> +do_mkimage() {
> +	./grub-mkimage -p / -d ./grub-core/ \
> +		       -O ${GRUB_TARGET}-efi -o ./${GRUB_IMAGE} \
> +	               boot linux fat serial part_msdos normal
> +}
> +addtask mkimage after do_compile before do_install
> +
> +do_deploy() {
> +	install -m 644 ${S}/${GRUB_IMAGE} ${DEPLOYDIR}
> +}
> +addtask deploy after do_install before do_build
> +
> +do_install[noexec] = "1"
> +do_populate_sysroot[noexec] = "1"

-- 
Darren Hart
Intel Open Source Technology Center
Yocto Project - Linux Kernel