[Scons-users] [Scons-dev] Bug in env.Glob() - how do I report?

Bill Deegan bill at baddogconsulting.com
Wed Dec 17 08:18:51 EST 2014


Also a minor issue please send such to the scons users mailing list in the
The dev mailing list is meant to discuss the internal development of scons
and not  user facing issues.

p.s. I've cc'd that mailing list

On Wed, Dec 17, 2014 at 8:06 AM, Dirk Bächle <tshortik at gmx.de> wrote:
> Vasily,
> On 15.12.2014 20:35, Vasily wrote:
>> Hi Dirk,
>> Thanks for the reply!
>> I get this running the SConstruct I attached:
>> $> scons .
>> scons: Reading SConscript files ...
>> TypeError: Tried to lookup Dir 'some_entry' as a File.:
>>    File "C:\Vass\Work\Temp\scons_glob_bug\SConstruct", line 22:
>>      d2[0].srcnode()
>>    File "C:\Python27\scons-2.1.0\SCons\Node\FS.py", line 743:
>>      srcnode.must_be_same(self.__class__)
>>    File "C:\Python27\scons-2.1.0\SCons\Node\FS.py", line 626:
>>      (self.__class__.__name__, self.path, klass.__name__))
>> Note: I've checked it agains SCons 2.1.0 (pretty old, but that's what we
>> use internally right now, maybe it's already fixed?..)
> I had another look and I tested your example with the latest SCons 2.3.4
> and 2.1.0 as well. Both times I get the cyclic dependency error...
> This seems to be logical to me, because of the following line:
>   d1 = variant_exec(env1, 'var1', env1.Command, 'some_entry',
> 'some_entry', Mkdir("$TARGET"))
> , where you specify "some_entry" as target *and* source for the Mkdir().
> You don't need to do this, setting the source to [] (empty list) should
> work fine.
> After this change I was finally able to reproduce your error output: the
> problem is not so much in the Glob itself, but in the fact that you're
> trying to handle directories but aren't telling SCons so. As a default,
> SCons assumes that simple strings (like the ones returned from the Glob
> call) refer to file type entries. So, if a folder "some_entry" exists, but
> the Glob() returns a "some_entry" these two collide. For resolving this you
> have to explicitly convert the list of globbed strings to Dir nodes...find
> an example SConstruct attached.
> I hope this explains things and helps you further.
> Regards,
> Dirk
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