[OE-core] Tell me your build error message annoyances!

[Richard Purdie]

On Thu, 2011-06-09 at 12:02 +0100, Phil Blundell wrote:
> After I made a typo (mismatched quotes) in one of my recipes, my next
> bitbake run printed:
> 
> Loading cache: 100% |#####################################################################################################################################################| ETA:  00:00:00
> Loaded 1323 entries from dependency cache.
> NOTE: Error expanding variable do_configure                                                                                                                               | ETA:  --:--:--
> ERROR: Command execution failed: Traceback (most recent call last):#############################                                                                          | ETA:  00:00:00
>   File "/home/pb/oe/bitbake/lib/bb/command.py", line 99, in runAsyncCommand
>     self.cooker.updateCache()
>   File "/home/pb/oe/bitbake/lib/bb/cooker.py", line 871, in updateCache
>     if not self.parser.parse_next():
>   File "/home/pb/oe/bitbake/lib/bb/cooker.py", line 1120, in parse_next
>     self.shutdown(clean=False)
>   File "/home/pb/oe/bitbake/lib/bb/cooker.py", line 1102, in shutdown
>     bb.codeparser.parser_cache_save(self.cfgdata)
>   File "/home/pb/oe/bitbake/lib/bb/codeparser.py", line 77, in parser_cache_save
>     data, version = p.load()
> EOFError
> 
> So, this is (a) confusing, because "EOFError" doesn't yield much
> information about the actual cause of the problem; (b) unhelpful, since
> it doesn't mention which line of the file (or even which recipe) was to
> blame; and (c) annoying, for the usual reasons to do with python
> traceback.
> 
> Somewhat worse, even after I fixed the typo, any subsequent attempt to
> run bitbake would just result in:
> 
> Loading cache: 100% |#####################################################################################################################################################| ETA:  00:00:00
> Loaded 1323 entries from dependency cache.
> Traceback (most recent call last):                                                                                                                                        | ETA:  --:--:--
>   File "/usr/lib/python2.6/multiprocessing/util.py", line 235, in _run_finalizers
>     finalizer()
>   File "/usr/lib/python2.6/multiprocessing/util.py", line 174, in __call__
>     res = self._callback(*self._args, **self._kwargs)
>   File "/home/pb/oe/bitbake/lib/bb/codeparser.py", line 77, in parser_cache_save
>     data, version = p.load()
> EOFError
> 
> (repeated about 10 times)
> 
> I deleted tmp/cache/* and that seemed to fix the problem.

FWIW, bitbake master has fixes for this specific issue and a number of
other codeparser performance related issues. If it meets EOF while
loading it will now just assume the cache file is corrupt and
ignore/rebuild it.

Cheers,

Richard