William Vinnicombe 91365356bd py: libcamera: Improve python binding installation ...

The existing meson.build file installs the bindings to a manually
constructed directory that is not included in the Python path in most
distributions. For instance, on a  Debian 12 system, the modules is
intalled in /usr/lib/x86_64-linux-gnu/python3.11/site-packages/, while
the Python interpreter looks for site packages in
/usr/lib/python3/dist-packages/.

It also always builds the bindings using the system Python, as it
searches for the Python library using the standard dependency()
function. This prevents build the Python bindings for a different
interpreter version without changing the system default interpreter.

Modify the build process to use the meson python module to build the
Python bindings targets, so it installs them to the correct directories
for Python. This also allows specifying a different target Python
interpreter through the '[binaries]' section of a meson native file.

The behaviour is not changed for cross-compilation, as the meson python
module has known issues in that case.

Signed-off-by: William Vinnicombe <william.vinnicombe@raspberrypi.com>
Co-developed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>

2025-08-20 13:19:32 +03:00

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