[coreboot] Unable to build futility on 32-bit userspace

[Paul Menzel]

Dear coreboot folks,


Trying to run `make test-abuild` on my system with a 32-bit userspace,
it looks like quite some boards require the program futility from
`util/futility`, but that fails to build with the error below.

```
/dev/shm/coreboot/util/futility(master) $ git describe
4.6-1292-g5bf3457bc4
/dev/shm/coreboot/util/futility(master) $ LANG= make
    MAKE       futility/build/futility/futility
unset CFLAGS LDFLAGS; make -C /dev/shm/coreboot/3rdparty/vboot \
	BUILD=/dev/shm/coreboot/util/futility/build \
	CC="cc" \
	V= \
	/dev/shm/coreboot/util/futility/build/futility/futility
make[1]: Entering directory '/dev/shm/coreboot/3rdparty/vboot'
    CC            futility/futility.o
    CC            futility/cmd_dump_fmap.o
    CC            futility/cmd_gbb_utility.o
    CC            futility/misc.o
    CC            futility/ryu_root_header.o
    CC            futility/cmd_bdb.o
    CC            futility/cmd_create.o
    CC            futility/cmd_dump_kernel_config.o
    CC            futility/cmd_load_fmap.o
    CC            futility/cmd_pcr.o
    CC            futility/cmd_show.o
    CC            futility/cmd_sign.o
    CC            futility/cmd_validate_rec_mrc.o
    CC            futility/cmd_vbutil_firmware.o
    CC            futility/cmd_vbutil_kernel.o
    CC            futility/cmd_vbutil_key.o
    CC            futility/cmd_vbutil_keyblock.o
    CC            futility/file_type.o
    CC            futility/file_type_bios.o
    CC            futility/file_type_rwsig.o
    CC            futility/file_type_usbpd1.o
    CC            futility/vb1_helper.o
    CC            futility/vb2_helper.o
    CC            futility/bdb_helper.o
    GEN           gen/futility_cmds.c
    CC            gen/futility_cmds.o
    CC            cgpt/cgpt_create.o
    CC            cgpt/cgpt_add.o
    CC            cgpt/cgpt_boot.o
    CC            cgpt/cgpt_show.o
    CC            cgpt/cgpt_repair.o
    CC            cgpt/cgpt_prioritize.o
    CC            cgpt/cgpt_common.o
    CC            futility/dump_kernel_config_lib.o
make[1]: *** No rule to make target '/dev/shm/coreboot/util/futility/build/host/arch/i686/lib/crossystem_arch.o', needed by '/dev/shm/coreboot/util/futility/build/libvboot_util.a'.  Stop.
make[1]: Leaving directory '/dev/shm/coreboot/3rdparty/vboot'
Makefile.inc:4: recipe for target '/dev/shm/coreboot/util/futility/build/futility/futility' failed
make: *** [/dev/shm/coreboot/util/futility/build/futility/futility] Error 2
```

I haven’t tested this yet with a 64-bit userspace, but assume that
works. Does somebody have a fix?


Thanks,

Paul
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