[Scons-users] scons-local-2.5.1 build and clean shows random failure

[Bill Deegan]

so you see this most often when:

scons -j <SOME NUMBER> -c ?

Any chance you can hop on the IRC channel?


On Tue, Jul 25, 2017 at 8:39 AM, Hua Yanghao <huayanghao at gmail.com> wrote:

> What I don't get is, this issue is not 100% reproducible.
> Looks like it somehow relies on the OS scheduler and
> if two process execute order changes it produces different result.
>
> Could be a fundamental bug :-)
>
> On Tue, Jul 25, 2017 at 5:38 PM, Bill Deegan <bill at baddogconsulting.com>
> wrote:
> > nope. that's just because we're printing n.get_abspath()
> >
> > On Tue, Jul 25, 2017 at 8:36 AM, Hua Yanghao <huayanghao at gmail.com>
> wrote:
> >>
> >> Is scons accidentally treating /home/hua/git/usw/output/linux64_full
> >> and output/linux64_full
> >> as different resources? Then maybe changing everything to absolute
> >> path will do the trick?
> >>
> >> On Tue, Jul 25, 2017 at 5:34 PM, Hua Yanghao <huayanghao at gmail.com>
> wrote:
> >> > On Tue, Jul 25, 2017 at 5:28 PM, Bill Deegan <
> bill at baddogconsulting.com>
> >> > wrote:
> >> >> Can you check if you are specifying output/linux64_full as the source
> >> >> for
> >> >> some file in output/linux64_full ?
> >> >
> >> > Nope. All files in output are either copied from the root or
> generated.
> >> > There are builds depends on the files generated in
> output/linux64_full,
> >> > but I cannot see anything depends on output/linux64_full e.g. this
> >> > folder.
> >> >
> >> > with this change:
> >> > @@ -1038,7 +1038,8 @@ class Taskmaster(object):
> >> >              else:
> >> >                  desc = desc + \
> >> >                      "  Internal Error: no cycle found for node %s
> >> > (%s) in state %s\n" %  \
> >> > -                    (node, repr(node), StateString[node.get_state()])
> >> > +                    (node, repr(node),
> StateString[node.get_state()]) \
> >> > +                    + str([n.get_abspath() for n in
> >> > self.pending_children]) + str([str(n[0]) for n in nclist])
> >> >
> >> >          raise SCons.Errors.UserError(desc)
> >> >
> >> > I got this error and indeed it looks like it does depend on itself
> which
> >> > is odd:
> >> > scons: *** Found dependency cycle(s):
> >> >   Internal Error: no cycle found for node output/linux64_full
> >> > (<SCons.Node.FS.Dir object at 0x555b51bae330>) in state pending
> >> > ['/home/hua/git/usw/output/linux64_full']['output/linux64_full']
> >> > File "/home/hua/git/usw/tools/scons-local-2.5.1/SCons/Taskmaster.py",
> >> > line 1044, in cleanup
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