[Scons-users] Mixing VariantDirs with "in-tree" build

[Tobias Herzog]

No, I meant the order of invoking scons:
> scons -Q --tree=all A/B/foocat A/B/foo.src > A/B/foo+-A/B/foo  +-
A/B/foo.src  +-/bin/cat> scons -Q --tree=all build/barcat A/B/foo >
build/bar+-build/bar  +-A/B/foo  +-/bin/cat

Am Dienstag, den 29.01.2019, 15:12 -0800 schrieb Bill Deegan:
> so if you swap the order it works?
> 
> 
> 
>         SConscript('A/SConscript', variant_dir='build', duplicate=0)
> 
>         SConscript('A/B/SConscript')
> 
> 
> 
> On Tue, Jan 29, 2019 at 1:13 PM Tobias Herzog <pasdVn3 at gmx.de> wrote:
> > Hmm, don't know if I understand you correctly, but if A/B/foo is a
> > regular file (i.e. not a generated file, a build target) everything
> > works as expected, because scons looks up build/B/foo (which is in
> > fact not there, because i Use duplicate=0 with the VariantDir) in
> > the original directory A/B/foo.That is also why the build succeeds,
> > when I execute the two commands below in reverse order (because I
> > "manually" build A/B/foo before).
> > Anyway, I accept the answer that this is intended behavior :)
> > 
> > 
> > Am Dienstag, den 29.01.2019, 09:17 -0800 schrieb Bill Deegan:
> > > Your issue has nothing to do with whether the file foo is
> > > generated or just a regular file.
> > > You've created via your variantdir usage (as far as scons is
> > > concerned) a tree which looks like this:
> > > 
> > > 
> > > +-SConstruct
> > > 
> > > +-A
> > > 
> > >   +-SConscript
> > > 
> > >   +-B
> > > 
> > >     +-SConscript
> > > 
> > >     +-foo.src
> > >     +-foo <- to be built
> > > +-build  <-- this is the directory scons "works in" when
> > > evaluating the SConscript below
> > >    +- SConscript
> > >    +- B <-- you're looking for this which doesn't and won't exist
> > >       +- foo <-- and this which doesn't and won't exist.
> > > 
> > > Does that help?
> > > 
> > > 
> > > 
> > > 
> > > 
> > > On Mon, Jan 28, 2019 at 11:30 PM pasdVn <pasdVn3 at gmx.de> wrote:
> > > > Thanks for your quick reply!
> > > > 
> > > > I thought that SCons is looking up a node via srcnode() and
> > > > thus in the original location, if it is not found in the
> > > > current variant dir, but obviously this is not the case here,
> > > > because A/B/foo is a generate file (i.e. a target), right?
> > > > 
> > > > 
> > > > Am 29. Januar 2019 00:51:33 MEZ schrieb Bill Deegan <
> > > > bill at baddogconsulting.com>:
> > > > > See below
> > > > > 
> > > > > On Mon, Jan 28, 2019 at 12:33 PM Tobias Herzog <
> > > > > pasdVn3 at gmx.de> wrote:
> > > > > > Hi scons users,
> > > > > > 
> > > > > > 
> > > > > > 
> > > > > > consider the following demo project:
> > > > > > 
> > > > > > 
> > > > > > 
> > > > > > +-SConsctuct
> > > > > > 
> > > > > > +-A
> > > > > > 
> > > > > >   +-SConscript
> > > > > > 
> > > > > >   +-B
> > > > > > 
> > > > > >     +-SConscript
> > > > > > 
> > > > > >     +-foo.src
> > > > > > 
> > > > > > 
> > > > > > 
> > > > > > 
> > > > > > 
> > > > > > With SConstruct:
> > > > > > 
> > > > > >         SConscript('A/B/SConscript')
> > > > > > 
> > > > > >         SConscript('A/SConscript', variant_dir='build',
> > > > > > duplicate=0)
> > > > > > 
> > > > > > 
> > > > > > 
> > > > > > A/SConscript:
> > > > > > 
> > > > > >         Command(source='B/foo',
> > > > > > 
> > > > > >                 target='bar',
> > > > > > 
> > > > > >                 action='cat $SOURCE > $TARGET')
> > > > > > 
> > > > > > A/B/SConscript:
> > > > > > 
> > > > > >         Command(target='foo',
> > > > > > 
> > > > > >                 source='foo.src',
> > > > > > 
> > > > > >                 action='cat $SOURCE > $TARGET')
> > > > > > 
> > > > > > 
> > > > > > 
> > > > > > 
> > > > > > 
> > > > > > No I do:
> > > > > > 
> > > > > > > scons -Q --tree=all build/bar
> > > > > > 
> > > > > > scons: *** [build/bar] Source `A/B/foo' not found, needed
> > > > > > by target
> > > > > > 
> > > > > > `build/bar'.
> > > > > > 
> > > > > > +-build/bar
> > > > > > 
> > > > > >   +-A/B/foo
> > > > > > 
> > > > > >   +-/bin/cat
> > > > > > 
> > > > > > 
> > > > > > 
> > > > > > and
> > > > > > 
> > > > > > >scons -Q --tree=all A/B/foo
> > > > > > 
> > > > > > cat A/B/foo.src > A/B/foo
> > > > > > 
> > > > > > +-A/B/foo
> > > > > > 
> > > > > >   +-A/B/foo.src
> > > > > > 
> > > > > >   +-/bin/cat
> > > > > > 
> > > > > > 
> > > > > > 
> > > > > > 
> > > > > > 
> > > > > > I know that this is a quite strage project setup, but
> > > > > > nevertheless I
> > > > > > 
> > > > > > would expect scons to detect the depencies correct. Is this
> > > > > > a bug, or
> > > > > > 
> > > > > > am I missing something?
> > > > > 
> > > > > You're missing something.By saying:
> > > > > SConscript('A/SConscript', variant_dir='build', duplicate=0)
> > > > > This is the same as:VariantDir('build','A',
> > > > > duplicate=0)SConscript('build/SConscript')
> > > > > So when you're asking for B/foo from that SConscript, you're
> > > > > actually asking for build/B/foo.If you changed it to
> > > > > "#/A/B/foo" it would work, or "../A/B/foo"
> > > > >  
> > > > > > If I Return/Export the foo-node and use it in the Command
> > > > > > in
> > > > > > 
> > > > > > A/SConscript it works as intended.
> > > > > > 
> > > > > > 
> > > > > > 
> > > > > > 
> > > > > > 
> > > > > > Thanks,
> > > > > > 
> > > > > > Tobias
> > > > > > 
> > > > > > 
> > > > > > 
> > > > > > _______________________________________________
> > > > > > 
> > > > > > Scons-users mailing list
> > > > > > 
> > > > > > Scons-users at scons.org
> > > > > > 
> > > > > > https://pairlist4.pair.net/mailman/listinfo/scons-users
> > > > > > 
> > > > _______________________________________________
> > > > 
> > > > Scons-users mailing list
> > > > 
> > > > Scons-users at scons.org
> > > > 
> > > > https://pairlist4.pair.net/mailman/listinfo/scons-users
> > > > 
> > > 
> > > _______________________________________________Scons-users
> > > mailing listScons-users at scons.org
> > > https://pairlist4.pair.net/mailman/listinfo/scons-users
> > 
> > _______________________________________________
> > 
> > Scons-users mailing list
> > 
> > Scons-users at scons.org
> > 
> > https://pairlist4.pair.net/mailman/listinfo/scons-users
> > 
> 
> _______________________________________________Scons-users mailing
> listScons-users at scons.org
> https://pairlist4.pair.net/mailman/listinfo/scons-users
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://pairlist4.pair.net/pipermail/scons-users/attachments/20190130/e0bd221c/attachment.html>