[yocto] Confusing error

[Gary Thomas]

I'm getting a very confusing error from bitbake.  I'm using a snapshot
from Poky/Yocto (equivalent to 1.8 release) with my own $DISTRO

   $ bitbake nand-installer-image
   NOTE: Started PRServer with DBfile: /home/gary/tmp/p0381_2015-05-05/p0381_build/cache/prserv.sqlite3, IP: 127.0.0.1, PORT: 41585, PID: 460
   Loading cache: 100% |###################################################################################| ETA:  00:00:00
   Loaded 1708 entries from dependency cache.
   NOTE: Resolving any missing task queue dependencies
   ERROR: Nothing RPROVIDES 'virtual/bootloader' (but /home/gary/tmp/p0381_2015-05-05/opt/amltd/poky/meta-amltd/packages/packagegroups /packagegroup-amltd.bb RDEPENDS on or 
otherwise requires it)
   NOTE: Runtime target 'virtual/bootloader' is unbuildable, removing...
   Missing or unbuildable dependency chain was: ['virtual/bootloader']
   NOTE: Runtime target 'packagegroup-amltd-boot' is unbuildable, removing...
   Missing or unbuildable dependency chain was: ['packagegroup-amltd-boot', 'virtual/bootloader']
   ERROR: Required build target 'nand-installer-image' has no buildable providers.
   Missing or unbuildable dependency chain was: ['nand-installer-image', 'packagegroup-amltd-boot', 'virtual/bootloader']

But, there is such a provider and I can build it (from the same build tree):
   $ bitbake virtual/bootloader
   NOTE: Started PRServer with DBfile: /home/gary/tmp/p0381_2015-05-05/p0381_build/cache/prserv.sqlite3, IP: 127.0.0.1, PORT: 43428, PID: 515
   Loading cache: 100% |###################################################################################| ETA:  00:00:00
   Loaded 1708 entries from dependency cache.
   NOTE: Resolving any missing task queue dependencies

   Build Configuration:
   BB_VERSION        = "1.27.0"
   BUILD_SYS         = "i686-linux"
   NATIVELSBSTRING   = "Fedora-17"
   TARGET_SYS        = "arm-amltd-linux-gnueabi"
   MACHINE           = "teton-p0381"
   DISTRO            = "amltd"
   DISTRO_VERSION    = "1.8+snapshot-2015-05-05"
   TUNE_FEATURES     = "arm armv7a vfp neon callconvention-hard cortexa7"
   TARGET_FPU        = "vfp-neon"
   meta
   meta-oe
   meta-amltd
   meta-teton-ls1-p0381
   meta-fsl-arm
   meta-fsl-arm-extra
   meta-browser      = "<unknown>:<unknown>"

   NOTE: Preparing RunQueue
   NOTE: Executing SetScene Tasks
   NOTE: Executing RunQueue Tasks
         ...

After much research, I found that this is happening because I have
   MACHINE_EXTRA_RRECOMMENDS="virtual/bootloader linux-firmware-iwlwifi-5xxx"

If I remove the 'virtual/bootloader' from MACHINE_EXTRA_RRECOMMENDS,
the confusion (and error) go away.  Any ideas what's happening and why
I might be getting this confusing error?

Thanks

-- 
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Gary Thomas                 |  Consulting for the
MLB Associates              |    Embedded world
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