On Mon, Nov 25, 2019 at 2:12 AM Sebastian Huber < sebastian.hu...@embedded-brains.de> wrote:
> On 25/11/2019 08:55, Chris Johns wrote: > > > > On 25/11/19 5:28 pm, Sebastian Huber wrote: > >> > >> On 24/11/2019 23:25, Chris Johns wrote: > >>>>> Should there be a note or something about waf needing python and we > recommend > >>>>> python3? Plus waf needs a `python` installed and not just `python2` > or > >>>>> `python3`? > >>>> I think this belongs to the Host Computer section. The quick start > uses the > >>>> RSB, so if you managed to build the tools, you must have a working > Python. > >>>> The RSB uses Python and the RTEMS Tools use waf. > >>> The RSB can use python2 or python3 without a python. What about a note > to say > >>> ... "Waf uses python and you need to make this command available on > your system". > >> Now I am a bit confused. I thought every UNIX-like system provides a > >> > >> #!/usr/bin/env python > >> > >> which maps to Python 2 or 3? > >> > > Apparently on some distros the python executable is not automatically > installed > > with a suitable python2 or python3. I am not aware of the specifics of > this but > > it was raised as an issue that I fixed in the RSB: > > > > https://devel.rtems.org/ticket/3537 > > I have never seen a system in which > > #!/usr/bin/env python2 > > or > > #!/usr/bin/env python3 > > works, but not > > #!/usr/bin/env python > > How many Python scripts would stop to work in this case? However, the > availability of a python command is not mandatory according to: > > https://www.python.org/dev/peps/pep-0394/ > > I think we should note in the "Host Computer" section that a "python" > command is mandatory for RTEMS and remove the RSB extra stuff. > Chris can answer to that. But on Centos 7, we have: $ type python python is /usr/bin/python $ python --version Python 2.7.5 $ type python2 python2 is /usr/bin/python2 $ type python3 bash: type: python3: not found $ env python Python 2.7.5 (default, Aug 7 2019, 00:51:29) [GCC 4.8.5 20150623 (Red Hat 4.8.5-39)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> and if I activate the SCL for Python 3: $ scl enable rh-python36 bash [joel@localhost rtems-work]$ type python python is /opt/rh/rh-python36/root/usr/bin/python [joel@localhost rtems-work]$ python --version Python 3.6.3 > > -- > Sebastian Huber, embedded brains GmbH > > Address : Dornierstr. 4, D-82178 Puchheim, Germany > Phone : +49 89 189 47 41-16 > Fax : +49 89 189 47 41-09 > E-Mail : sebastian.hu...@embedded-brains.de > PGP : Public key available on request. > > Diese Nachricht ist keine geschäftliche Mitteilung im Sinne des EHUG. > _______________________________________________ > devel mailing list > devel@rtems.org > http://lists.rtems.org/mailman/listinfo/devel
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