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package/jailhouse: fix build when python helper scripts are enabled

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When compiling jailhouse with BR2_PACKAGE_JAILHOUSE_HELPER_SCRIPTS=y,
build is failing with error:

    Traceback (most recent call last):
      File "/buildroot/output/build/jailhouse-e57d1eff6d55aeed5f977fe4e2acfb6ccbdd7560/setup.py", line 18, in <module>
        setup(name="pyjailhouse", version=version,
      File "/buildroot/output/host/lib/python3.12/site-packages/setuptools/__init__.py", line 108, in setup
        return distutils.core.setup(**attrs)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
      ...
      File "/buildroot/output/host/lib/python3.12/sysconfig.py", line 549, in _init_posix
        _temp = __import__(name, globals(), locals(), ['build_time_vars'], 0)
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    ValueError: Empty module name

This is due to a missing dependency on the target python3 package.

Jailhouse Python scripts are using setuptools with host-python3 which
reads its sysconfig data from the target-python3. See:
https://gitlab.com/buildroot.org/buildroot/-/blob/2024.08.1/package/pkg-python.mk?ref_type=tags#L33

If the target python3 is not installed, this get expanded as an empty
string, leading to this "ValueError: Empty module name" error.

Pure Python packages which are using the python-package infrastructure
usually get this dependency automatically from:
https://gitlab.com/buildroot.org/buildroot/-/blob/2024.08.1/package/pkg-python.mk?ref_type=tags#L295

Here, the jailhouse package rather uses the generic-package
infrastructure, then installs the Python scripts (if enabled) with
dedicated macros. This is why the target python3 is needed.

This commit fixes the issue by adding this missing dependency.

Signed-off-by: Julien Olivain <ju.o@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit c808e271e3)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
This commit is contained in:
Julien Olivain 2024-10-28 21:34:42 +01:00 committed by Peter Korsgaard
parent 142d1f38b4
commit 2c61a66f21
1 changed files with 2 additions and 1 deletions
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3
package/jailhouse/jailhouse.mk
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@ -21,7 +21,8 @@ JAILHOUSE_MAKE_OPTS = \
ifeq ($(BR2_PACKAGE_JAILHOUSE_HELPER_SCRIPTS),y)
JAILHOUSE_DEPENDENCIES += \
host-python-mako \
host-python-setuptools
host-python-setuptools \
python3
JAILHOUSE_MAKE_OPTS += \
HAS_PYTHON_MAKO="yes" \
PYTHON_PIP_USABLE="yes"