[Buildroot] Unable to build Buildroot

[Shérab <Sebastien.Hinderer@ens-lyon.org>]

Dear all,

So, I updated the buildroot submodule properly and removed brltty as an
external package.

I am now facing another compile problem, with qemu I think:

...
  CC      .../targetqga/channel-posix.o
  CC      .../targetqga/qapi-generated/qga-qapi-types.o
  CC      .../targetqga/qapi-generated/qga-qapi-visit.o
  CC      .../targetqga/qapi-generated/qga-qmp-marshal.o
  CC      .../targetutil/memfd.o
  CC      .../targetutil/path.o
util/memfd.c:40:12: error: static declaration of ?memfd_create? follows non-static declaration
 static int memfd_create(const char *name, unsigned int flags)
            ^~~~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/bits/mman-linux.h:115:0,
                 from /usr/include/x86_64-linux-gnu/bits/mman.h:45,
                 from /usr/include/x86_64-linux-gnu/sys/mman.h:41,
                 from .../build/host-qemu-2.10.2/include/sysemu/os-posix.h:29,
                 from .../build/host-qemu-2.10.2/include/qemu/osdep.h:104,
                 from util/memfd.c:28:
/usr/include/x86_64-linux-gnu/bits/mman-shared.h:46:5: note: previous declaration of ?memfd_create? was here
 int memfd_create (const char *__name, unsigned int __flags) __THROW;
     ^~~~~~~~~~~~
.../build/host-qemu-2.10.2/rules.mak:66?: la recette pour la cible ??util/memfd.o?? a ?chou?e
make[3]: *** [util/memfd.o] Erreur 1

I tried to disable the host qemu in make menuconfig but that was not
possible.

I also discovered that the host qemu seems to be selected by emacs but I
don't understand what's the linkbetween the two (emacs is provided in
the br2-external tree).

Any hint?

Thanks,

Sh?rab.