I am continuing my work on creating a "Hello, World!" BitBake project. Because
of the excellent help I got before, things have gone reasonably well, but I'm
again running into something I don't know how to fix.
As before, the entire contents of my very small project appear at the end of
this message. Here's what works fine:
$ ../BitBake/bin/bitbake-layers show-layers
Parsing recipes..done.
layer path priority
==========================================================
LayerA /home/pturley/Workspace/Hello/LayerA 1
$ ../BitBake/bin/bitbake-layers show-recipes
Parsing recipes..done.
=== Available recipes: ===
a:
LayerA 1
When I tried this:
../BitBake/bin/bitbake -c listtasks a
I got a Python stack trace that ended here:
File "../BitBake/lib/bb/runqueue.py", line 902, in
RunQueue.check_stamp_task(task=0, taskname='do_listtasks', recurse=False):
# If the stamp is missing its not current
> if not os.access(stampfile, os.F_OK):
logger.debug(2, "Stampfile %s not available", stampfile)
TypeError: coercing to Unicode: need string or buffer, NoneType found
This code isn't expecting the "stampfile" variable to be "None" (which it is),
so it freaks out. I made a very simple fix to get past the problem:
if not stampfile or not os.access(stampfile, os.F_OK):
That made a dramatic difference, and enabled me to get this far:
$ ../BitBake/bin/bitbake -c listtasks a
Loading cache: 100%
|###############################################################| ETA: 00:00:00
Loaded 2 entries from dependency cache.
NOTE: Resolving any missing task queue dependencies
NOTE: Preparing runqueue
NOTE: Executing RunQueue Tasks
NOTE: Running task 1 of 1 (ID: 0,
/home/pturley/Workspace/Hello/LayerA/a.bb, do_listtasks)
ERROR: T variable not set, unable to build
ERROR: Task 0 (/home/pturley/Workspace/Hello/LayerA/a.bb, do_listtasks)
failed with exit code '1'
NOTE: Tasks Summary: Attempted 1 tasks of which 0 didn't need to be rerun
and 1 failed.
Summary: 1 task failed:
/home/pturley/Workspace/Hello/LayerA/a.bb, do_listtasks
Summary: There was 1 ERROR message shown, returning a non-zero exit code.
$ ../BitBake/bin/bitbake a
Loading cache: 100%
|###############################################################| ETA: 00:00:00
Loaded 2 entries from dependency cache.
NOTE: Resolving any missing task queue dependencies
NOTE: Preparing runqueue
NOTE: Executing RunQueue Tasks
NOTE: Running task 1 of 1 (ID: 0,
/home/pturley/Workspace/Hello/LayerA/a.bb, do_build)
ERROR: T variable not set, unable to build
ERROR: Task 0 (/home/pturley/Workspace/Hello/LayerA/a.bb, do_build) failed
with exit code '1'
NOTE: Tasks Summary: Attempted 1 tasks of which 0 didn't need to be rerun
and 1 failed.
Summary: 1 task failed:
/home/pturley/Workspace/Hello/LayerA/a.bb, do_build
Summary: There was 1 ERROR message shown, returning a non-zero exit code.
As you can see, BitBake is expecting the "T" variable to be set. I don't think
I've ever seen this variable -- so I don't know what it's for or what I should
change.
Can anyone offer a hint?
------------------------------------------------------------
├── build
│ │
│ ├── classes
│ │ │
│ │ └── base.bbclass
│ │
│ │ +-----------------------------------------------
│ │ | addtask listtasks
│ │ |
│ │ | do_listtasks[nostamp] = "1"
│ │ |
│ │ | python do_listtasks() {
│ │ | import sys
│ │ | # emit variables and shell functions
│ │ | #bb.data.emit_env(sys.__stdout__, d)
│ │ | # emit the metadata which isnt valid shell
│ │ | for e in d.keys():
│ │ | if d.getVarFlag(e, 'task'):
│ │ | bb.plain("%s" % e)
│ │ | }
│ │ |
│ │ | addtask build
│ │ |
│ │ | do_build() {
│ │ | echo "Hello"
│ │ | }
│ │ +-----------------------------------------------
│ │
│ └── conf
│ │
│ ├── bblayers.conf
│ │
│ │ +-----------------------------------------------
│ │ | BBLAYERS ?= " \
│ │ | /home/pturley/Workspace/Hello/LayerA \
│ │ | "
│ │ +-----------------------------------------------
│ │
│ └── bitbake.conf
│
│ +-----------------------------------------------
│ | CACHE = "${TOPDIR}/cache"
│ +-----------------------------------------------
│
├── LayerA
│ │
│ ├── a.bb
│ │
│ │ +-----------------------------------------------
│ │ | DESCRIPTION = "Layer A Main Recipe"
│ │ | PN = 'a'
│ │ | PV = '1'
│ │ +-----------------------------------------------
│ │
│ └── conf
│ │
│ └── layer.conf
│
│ +-----------------------------------------------
│ | BBPATH .= ":${LAYERDIR}"
│ |
│ | BBFILES += "${LAYERDIR}/*.bb"
│ |
│ | BBFILE_COLLECTIONS += "A"
│ | BBFILE_PATTERN_A := "^${LAYERDIR}/"
│ +-----------------------------------------------
│
└── BitBake
The BitBake directory origin is:
http://git.openembedded.org/bitbake/
I have the 1.15.2 tag checked out, which is what
Yocto denzil uses.
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