[OE-core] create_image() fails with cannot concatenate 'str' and 'NoneType'error

[Paul Eggleton]

Hi Walt,

On Saturday 24 January 2015 17:30:08 Walt wrote:
> I have search the web and found a few references to this problem but I have
> not yet found a solution.
> 
> This is the latest commit.
> --------
> commit 745cebd635002618d7edd0a109ff07dd2953621a
> Author: Richard Purdie <richard.purdie at linuxfoundation.org>
> Date:   Fri Jan 23 14:38:12 2015 +0000
> 
>     bitbake: siggen: Ensure taskdata default functions exist in base class
> 
>     The get/set_taskdata functions are now part of the API of the class,
>     ensure they exist in the base class definition so the noop handler
>     works.
> 
>     [YOCTO #7233]
> 
>     (Bitbake rev: 9b5b1bd7d77e3f5886f6c557d3b750de1f6d6025)
> 
>     Signed-off-by: Richard Purdie <richard.purdie at linuxfoundation.org>
> 
> 
> And here is the error
> =====================
> File: '/home/walt/workspace/wwrelay-rootfs/yocto/meta/lib/oe/image.py',
> lineno: 355, function: create_image
>      0351:        execute_pre_post_process(self.d, post_process_cmds)
>      0352:
>      0353:
>      0354:def create_image(d):
>  *** 0355:    Image(d).create()
>      0356:
>      0357:if __name__ == "__main__":
>      0358:    """
>      0359:    Image creation can be called independent from bitbake
> environment.
> File: '/home/walt/workspace/wwrelay-rootfs/yocto/meta/lib/oe/image.py',
> lineno: 333, function: create
>      0329:        execute_pre_post_process(self.d, pre_process_cmds)
>      0330:
>      0331:        self._remove_old_symlinks()
>      0332:
>  *** 0333:        image_cmd_groups = self._get_imagecmds()
>      0334:
>      0335:        for image_cmds in image_cmd_groups:
>      0336:            # create the images in parallel
>      0337:            nproc = multiprocessing.cpu_count()
> File: '/home/walt/workspace/wwrelay-rootfs/yocto/meta/lib/oe/image.py',
> lineno: 303, function: _get_imagecmds
>      0299:                print "************************"
>      0300:                print localdata.getVar("IMAGE_CMD", True)
>      0301:                print "************************"
>      0302:                print "************************"
>  *** 0303:                cmds.append("\t" + localdata.getVar("IMAGE_CMD",
> True)) 0304:                cmds.append(localdata.expand("\tcd
> ${DEPLOY_DIR_IMAGE}"))
>      0305:
>      0306:                if type in cimages:
>      0307:                    for ctype in cimages[type]:
> Exception: TypeError: cannot concatenate 'str' and 'NoneType' objects
> 
> ERROR: Function failed: do_rootfs
> ERROR: Logfile of failure stored in: /home/walt/workspace/wwrelay-
> rootfs/yocto/build/tmp/work/cubietruck-poky-linux-gnueabi/wigwag-prod-
> lsb/1.0-r0/temp/log.do_rootfs.13308
> ERROR: Task 6 (/home/walt/workspace/wwrelay-
> rootfs/yocto/build/recipes/images/wigwag-prod-lsb.bb, do_rootfs) failed with
> exit code '1'
> NOTE: Tasks Summary: Attempted 3977 tasks of which 3976 didn't need to be
> rerun and 1 failed.

What have you got in your value of IMAGE_FSTYPES? It looks to me like there is 
an invalid value in there. If you aren't sure what it's set to, this command 
should tell you: 

  bitbake -e | grep ^IMAGE_FSTYPES=

Cheers,
Paul

-- 

Paul Eggleton
Intel Open Source Technology Centre