[Scons-users] Possible python 3 issue?

[Bill Deegan]

so sounds like a scanner issue then.. could it be using get_contents,
instead of get_text_contents?

On Wed, Oct 16, 2019 at 9:29 AM Mats Wichmann <mats at wichmann.us> wrote:

> On 10/16/19 10:04 AM, Peter Diener wrote:
> > Hi,
> >
> > I have been successfully using scons 3.1.0 with python 2.7.12 to build a
> > mostly Fortran based software project on Linux (multiple distributions).
> > I have the source tree separated from the build directory and are
> > therefore using variantdir and an SConscript file. Recently I tried to
> > run this with python 3.7.4 and found that it did not work as scons
> > failed to correctly find the dependencies on module files.
> >
> > I was able to reproduce this with a smaller test example that mimics the
> > setup in my larger software project. I have attached a zip file with
> > that source tree as well as build log files (in build_log.2.7.12 and
> > build_log.3.7.4) with all errors and output when building with
> > scons --tree=all. As can be seen from the build log files, when building
> > with python 3, scons does not seem to find the dependencies of the main
> > program on the module files.
> >
> > I have also tried with the latest release version of scons 3.1.1 with
> > the same results. It works with python 2 but not with python 3.
> >
> > So my question is: am I doing something wrong in my SConstruct and
> > SConscript files that just happens to work with python 2 and not with
> > python 3? Or is this a problem with scons and python 3?
>
> Possibly a bit of both.  There's an existing scons issue that points out
> some weakness in submodule support (#3366), and given that Fortran isn't
> the most heavily used language in the scons universe, there may still be
> untested code paths in the conversion to Python 3, that don't get
> exercised by what's in the test suite (there are some fairly new tests
> in that area, which you know since you contributed there :) )
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