[Scons-users] A bug in an error message?

[Bill Deegan]

Which version of Python?
Have you tried SCons 3.0.1?

On Wed, Jun 20, 2018 at 2:58 PM, Matthew Marinets <
Matthew.Marinets at kardium.com> wrote:

> So in my build we have many many custom builders associated with code
> generation. Normally when things go wrong the error messages are difficult
> to understand, but this one stumped me for quite a while until I noticed
> something:
>
>
>
> Error message:
>
> UnicodeDecodeError: 'utf-8' codec can't decode byte 0x83 in position 62:
> invalid start byte:
>
>    File "C:\proj\Branches\Sandbox\multiStim\Canopus\SConstruct", line 332:
>
>                  standardBuild('FirmwareCommon', firmwareRoot +
> '/Common', env.subst('$versionNumber_Firmware'))
>
>    File "C:\proj\Branches\Sandbox\multiStim\Canopus\SConstruct", line 314:
>
>                  SConscript(componentRoot + '/' + scriptName, exports =
> ['env', 'mbenv', 'versionNumber'])
>
>    File "C:\Program Files\Python36\scons-3.0.0\SCons\Script\SConscript.py",
> line 607:
>
>                  return method(*args, **kw)
>
>    File "C:\Program Files\Python36\scons-3.0.0\SCons\Script\SConscript.py",
> line 544:
>
>                  return _SConscript(self.fs, *files, **subst_kw)
>
>    File "C:\Program Files\Python36\scons-3.0.0\SCons\Script\SConscript.py",
> line 253:
>
>                   call_stack[-1].globals)
>
>    File "C:\proj\Branches\Sandbox\multiStim\Canopus\Electrical\
> FPGA\Firmware\Common\SConscript", line 236:
>
>                 CMDFLAGS = '/min'))
>
>    File "C:\Program Files\Python36\scons-3.0.0\SCons\Environment.py",
> line 224:
>
>                  return self.method(*nargs, **kwargs)
>
>    File "C:\proj\Branches\Sandbox\multiStim\Tools\Python\KSCons\GenerationTools\PacketGen.py",
> line 131:
>
>                   action = packetGenAction,)
>
>    File "C:\Program Files\Python36\scons-3.0.0\SCons\Environment.py",
> line 1965:
>
>                  return bld(self, target, source, **kw)
>
>    File "C:\Program Files\Python36\scons-3.0.0\SCons\Builder.py", line
> 635:
>
>                  return self._execute(env, target, source,
> OverrideWarner(kw), ekw)
>
>    File "C:\Program Files\Python36\scons-3.0.0\SCons\Builder.py", line
> 557:
>
>                  _node_errors(self, env, tlist, slist)
>
>    File "C:\Program Files\Python36\scons-3.0.0\SCons\Builder.py", line
> 303:
>
>                  msg = "Two environments with different actions were
> specified for the same target: %s\n(action 1: %s)\n(action 2: %s)" %
> (t,t_contents.decode('utf-8'),contents.decode('utf-8'))
>
>
>
> What this error message is *trying* to say is that there are two commands
> to generate the same target. However, the error message displayed at the
> top is “UnicodeDecodeError: 'utf-8' codec can't decode byte 0x83 in
> position 62: invalid start byte:” This is because the intended error
> message isn’t formatted properly, and just ends up throwing its own error
> to mask the original.
>
>
>
> Has anyone else run into this problem? Am I doing something wrong or is
> this a bug?
>
>
>
> Thanks,
>
> -Matthew
>
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>
>
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