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Adam Duskett 4d5b209384 package/mender-grubenv: fix grub module checks 
Commit b68810e70c (boot/grub2: add support to build multiple Grub2
configurations in the same build) broke mender-grubenv by splititng up
BR2_TARGET_GRUB2_BUILTIN_MODULES into two separate symbols, one for
legacy boot and one for EFI boot.

This change causes a systematic build failure now, as the legacy variable
BR2_TARGET_GRUB2_BUILTIN_MODULES is now always empty (during build).

We fix that by supplicating the missing modules to check: one for EFI and
one for legacy boot.

The EFI check is tricky: Indeed, there can be more than one EFI platform
enabled simultaneously; indeed, on x86_64, we can have both the 32-bit
and 64-bit EFI platforms enabled. So the check is inverted, and we check
that no platform is not enabled (yeah, double negation). For consistency,
we do the same for the legacy boot, even though in that case, there can
only ever be only one enabled at once at most.

Furthermore, mender-grubenv does not support multiple installations of
grub concurrently; it can only be installed for either legacy or EFI,
not both at the same time: /etc/mender-grubenv.cfg, its configuration
file, can only contain settings for one or the other, not both.

So we add a new check to Config.in to support only one grub installation
type at a time.

Signed-off-by: Adam Duskett <aduskett@gmail.com>
[yann.morin.1998@free.fr:
  - drop superfluous check on empty modules lists
  - move EFI and legacy commands under same condition as checks
  - variables were renamed
  - misc eye-candy
]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Cc: Köry Maincent <kory.maincent@bootlin.com>
2021-12-04 18:04:48 +01:00
arch arch/config: Make RISC-V 64-bits MMU optional 2021-10-27 14:39:01 +02:00
board configs/zynqmp_zcu106: fix arm-trusted-firmware build failure 2021-11-21 21:53:42 +01:00
boot boot/grub2/Config.in: add symbols to represent legacy and EFI boot 2021-12-04 18:04:08 +01:00
configs configs/nitrogen8mp: update device trees list 2021-11-21 21:55:45 +01:00
docs docs/manual: use single space in LIBFOO_{DEVICES, PERMISSIONS} 2021-12-02 18:11:50 +01:00
fs fs/ext2: fir (again) namespace for variables 2021-10-13 18:01:34 +02:00
linux {linux, linux-headers}: bump 4.{4, 9, 14, 19}.x / 5.{4, 10, 15}.x series 2021-12-03 08:55:49 +01:00
package package/mender-grubenv: fix grub module checks 2021-12-04 18:04:48 +01:00
support support/docker: drop use of Docker hub, use Gitlab registry 2021-11-28 14:39:47 +01:00
system system: support br2-external init systems 2020-10-14 22:48:42 +02:00
toolchain package/toolchain: rename GLIBC_COPY_NSSWITCH_FILE 2021-11-25 20:53:43 +01:00
utils utils/genrandconfig: reduce the maximum "size" of random configurations 2021-11-14 13:50:50 +01:00
.defconfig arch: remove support for sh64 2016-09-08 22:15:15 +02:00
.flake8 Revert ".flake8: fix check for 80/132 columns" 2021-01-02 17:38:20 +01:00
.gitignore
.gitlab-ci.yml .gitlab-ci.yml: use the Docker image from gitlab registry 2021-10-24 16:12:43 +02:00
CHANGES Update for 2021.11-rc3 2021-11-30 18:13:36 +01:00
Config.in Config.in: disable Fortify Source for microblaze 2021-08-23 23:08:05 +02:00
Config.in.legacy package/mpd: drop tidal option 2021-11-09 23:04:45 +01:00
COPYING COPYING: add exception about patch licensing 2016-02-26 19:50:13 +01:00
DEVELOPERS DEVELOPERS: add Joachim Wiberg as co-maintainer of SMCRoute 2021-11-13 18:03:02 +01:00
Makefile Makefile: release: use .tar.xz instead of .tar.bz2 2021-12-03 17:42:19 +01:00
Makefile.legacy Remove BR2_DEPRECATED 2016-10-15 23:14:45 +02:00
README docs: move the IRC channel away from Freenode 2021-05-29 22:16:23 +02:00

README 

Buildroot is a simple, efficient and easy-to-use tool to generate embedded
Linux systems through cross-compilation.

The documentation can be found in docs/manual. You can generate a text
document with 'make manual-text' and read output/docs/manual/manual.text.
Online documentation can be found at http://buildroot.org/docs.html

To build and use the buildroot stuff, do the following:

1) run 'make menuconfig'
2) select the target architecture and the packages you wish to compile
3) run 'make'
4) wait while it compiles
5) find the kernel, bootloader, root filesystem, etc. in output/images

You do not need to be root to build or run buildroot.  Have fun!

Buildroot comes with a basic configuration for a number of boards. Run
'make list-defconfigs' to view the list of provided configurations.

Please feed suggestions, bug reports, insults, and bribes back to the
buildroot mailing list: buildroot@buildroot.org
You can also find us on #buildroot on OFTC IRC.

If you would like to contribute patches, please read
https://buildroot.org/manual.html#submitting-patches