[Buildroot] No rule to make target 'host-python !!

Mon Jan 25 09:55:47 UTC 2021

I will use the buildroot python package Peter.
In fact the app that I must deploy on the Kernel use the version 3.7, I
know it must work also with the version 3.8 but it was for me an exercise
to learn how to add a package! (not good result but I learn a lot with your
help)

Now I understand better how the .mk I made work with the build process.

Again thanks a lot for your help.

Le dim. 24 janv. 2021 à 22:53, Peter Seiderer <ps.report at gmx.net> a écrit :

> Hello Emmanuel,
>
> On Sun, 24 Jan 2021 22:27:06 +0100, manu f <e.fiancette at gmail.com> wrote:
>
> > You are right Peter!
> > You will find my python pakage joined.
> > Like I told you I am noob in kernel compil, so sure I made bad thing,
> but I
> > am here to learn.
> >
> > So if I well understood even if I didnt select the package in menu
> config,
> > config.in and .mk file interferes with the build..
> > I use some other config.in and .mk file as model to build these file
> for my
> > package, so I make a mistake, if you could look them ?
>
> Besides the point I did not understand why you try to install some python37
> binaries (or source?)....all vars in python37/python37.mk should be
> named PYTHON37_... (instead of PYTHON_...) and the one in
> python37/Config.in
> should be named BR2_PYTHON37...
>
> Why not just enable the buildroot python3 package (will be python-3.8.6
> when using buildroot-2020.02.8)?
>
> Regards,
> Peter
>
> >
> > Regards
> >
> > (I remove the tar file in files directory cause it is to heavy to send,
> but
> > it's just python37 archive)
> >
> > Le dim. 24 janv. 2021 à 17:39, Peter Seiderer <ps.report at gmx.net> a
> écrit :
> >
> > > Hello Emmanuel,
> > >
> > > On Sun, 24 Jan 2021 17:08:21 +0100, manu f <e.fiancette at gmail.com>
> wrote:
> > >
> > > > Thanks peter.
> > > > What's mean Buildroot 2020.02.8-dirty?
> > >
> > > This indicates normally a buildroot git repository at version
> > > 2020.02.8 (tag/branch) with local changes ('dirty')...
> > >
> > > >
> > > > About python37, yes I add this custom package but like you see I
> didn't
> > > > select it.
> > >
> > > But the line '+# BR2_PACKAGE_PYTHON is not set' indicates that
> > > there is no python package any longer with your build setup
> > > (and so no host-python available needed by libevdev)...
> > >
> > > Hard to judge without knowledge of your br-external but I would suspect
> > > it contains a package/python directory with a python.mk file without
> > > an '$(eval $(host-autotools-package))' line (or something like
> > > that) and a Config.in file with BR2_PACKAGE_PYTHON_37 instead of
> > > BR2_PACKAGE_PYTHON?
> > >
> > > If so try to move .../br-exteranl/package/python to
> > > .../br-exteranl/package/python-37
> > >
> > > Regards,
> > > Peter
> > >
> > > > this config is without livdevdev and it compile right. but if I
> select
> > > it I
> > > > had th error I gave (do you think it could be a problem if I not set
> > > > libdevdev, I realy not sure I need it, sorry I didn't completly
> setupp
> > > this
> > > > buildroot jus modify some aspect and I am far to master all).
> > > >
> > > > But its is strange that I have BR2_PACKAGE_PYTHON not set.
> > > > I will look later (I am not on my linux computer), I think I even
> havent
> > > > pithon item in menu-config...
> > > > Is this mean I have a problem with python dependencies ? I will
> check the
> > > > dependencies logic.
> > > >
> > > > Peter, Its very strange that at your side you could compile with
> > > libdevdev
> > > > set and not me. Do you have an idea wher I could search?
> > > >
> > > > Many thanks for helping.
> > > >
> > > > Regards.
> > > >
> > > > Emmanuel
> > > >
> > > >
> > > >
> > > > Le dim. 24 janv. 2021 à 16:14, Peter Seiderer <ps.report at gmx.net>
> a
> > > écrit :
> > > >
> > > > > Hello,
> > > > >
> > > > > On Sun, 24 Jan 2021 12:40:31 +0100, manu f <e.fiancette at gmail.com>
>
> > > wrote:
> > > > >
> > > > > > here my complete .config
> > > > >
> > > > > Importing your .config into a plain buildroot-2020.02.8 gives
> > > > > the following diff:
> > > > >
> > > > > @@ -1,9 +1,8 @@
> > > > >  #
> > > > >  # Automatically generated file; DO NOT EDIT.
> > > > > -# Buildroot 2020.02.8-dirty Configuration
> > > > > +# Buildroot 2020.02.8 Configuration
> > > > >  #
> > > > >  BR2_HAVE_DOT_CONFIG=y
> > > > > -BR2_EXTERNAL_ATOS_PATH="/home/user/cleta_buildroot/br-external"
> > > > >  BR2_HOST_GCC_AT_LEAST_4_9=y
> > > > >  BR2_HOST_GCC_AT_LEAST_5=y
> > > > >  BR2_HOST_GCC_AT_LEAST_6=y
> > > > > @@ -1446,6 +1445,7 @@
> > > > >  #
> > > > >  # BR2_PACKAGE_PERL is not set
> > > > >  # BR2_PACKAGE_PHP is not set
> > > > > +# BR2_PACKAGE_PYTHON is not set
> > > > >  BR2_PACKAGE_PYTHON3=y
> > > > >  # BR2_PACKAGE_PYTHON3_PY_ONLY is not set
> > > > >  BR2_PACKAGE_PYTHON3_PYC_ONLY=y
> > > > > @@ -4174,6 +4174,7 @@
> > > > >  # BR2_PACKAGE_HOST_PKGCONF is not set
> > > > >  # BR2_PACKAGE_HOST_PRU_SOFTWARE_SUPPORT is not set
> > > > >  # BR2_PACKAGE_HOST_PWGEN is not set
> > > > > +# BR2_PACKAGE_HOST_PYTHON is not set
> > > > >  # BR2_PACKAGE_HOST_PYTHON_CYTHON is not set
> > > > >  # BR2_PACKAGE_HOST_PYTHON_LXML is not set
> > > > >  # BR2_PACKAGE_HOST_PYTHON_SIX is not set
> > > > > @@ -4876,17 +4877,3 @@
> > > > >  # BR2_VFP_FLOAT is not set
> > > > >  # BR2_PACKAGE_GCC_TARGET is not set
> > > > >  # BR2_HAVE_DEVFILES is not set
> > > > > -
> > > > > -#
> > > > > -# External options
> > > > > -#
> > > > > -
> > > > > -#
> > > > > -# br2-external tree for atos projects (in
> > > > > /home/user/cleta_buildroot/br-external)
> > > > > -#
> > > > > -BR2_PACKAGE_BACKLIGHT_MONITORING=y
> > > > > -BR2_PACKAGE_TEST_UART=y
> > > > > -BR2_PACKAGE_APP_MOUNT=y
> > > > > -BR2_PACKAGE_APP_UPDATER=y
> > > > > -BR2_NODE_JS_14x=y
> > > > > -# BR2_PYTHON_37 is not set
> > > > >
> > > > >
> > > > > Note the lines with 'Buildroot 2020.02.8-dirty',
> > > > > '-BR2_EXTERNAL_ATOS_PATH="/home/user/cleta_buildroot/br-external"',
> > > > > '+# BR2_PACKAGE_PYTHON is not set' and '-# BR2_PYTHON_37 is not
> set',
> > > > > so most likely something with your local change and/or br-external
> > > > > changing the package python to python37?
> > > > >
> > > > > Otherwise the config compiles fine here (even with libevdev
> enabled)...
> > > > >
> > > > > Regards,
> > > > > Peter
> > > > >
> > > > >
> > > > > >
> > > > > > Le sam. 23 janv. 2021 à 11:48, Thomas Petazzoni <
> > > > > > thomas.petazzoni at bootlin.com> a écrit :
> > > > > >
> > > > > > > On Fri, 22 Jan 2021 23:53:30 +0100
> > > > > > > manu f <e.fiancette at gmail.com> wrote:
> > > > > > >
> > > > > > > > ok, I remove libevdev in Target package =>libraries=>Other
> and
> > > its
> > > > > copile
> > > > > > > > without error!
> > > > > > > >
> > > > > > > > (But I dont know if I realy need this lib... )
> > > > > > > >
> > > > > > > > Well why it no compile with libdevdev ?
> > > > > > > > @ Thomas Petazzoni I saw you already got problem and make
> patch
> > > for
> > > > > > > > host-python interpreter...is there something to see with ?
> > > > > > >
> > > > > > > host-python is definitely part of Buildroot 2020.02, so I'm
> not
> > > sure
> > > > > > > how you can get this error. We would need more details, such
> as the
> > > > > > > complete .config that reproduces the issue.
> > > > > > >
> > > > > > > Thomas
> > > > > > > --
> > > > > > > Thomas Petazzoni, CTO, Bootlin
> > > > > > > Embedded Linux and Kernel engineering
> > > > > > > https://bootlin.com
> > > > > > >
> > > > >
> > > > >
> > >
> > >
>
>
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