Re: [Xen-devel] [PATCH] tools/configure: Allow specifying python to be found from path

[Wei Liu <wl@xxxxxxx>]

On Wed, Sep 18, 2019 at 05:14:06PM +0100, Ian Jackson wrote:
> ./configure takes a PYTHON=... argument.  You can use this to specify
> the python interpreter.  However, for no good reason, it expects an
> absolute path.
> 
> Fix this.  The new logic is:
>  * if not set, default to `python'
>  * if not absolute, look it up with type -p
>  * split into directory and executable name
> 
> The results in config/Tools.mk (which contains @PYTHON@ and
> @PYTHONPATH@) are identical for both
>   ./configure
>   ./configure PYTHON=/usr/bin/python
> so I assert this has no functional change except that now you can say
>   ./configure PYTHON=python
> 
> In particular you can now say
>   ./configure PYTHON=python2
>   ./configure PYTHON=python3
> 
> The latter is useful if you want python3 (which should probably be the
> default, but does not work right now).  The former is useful if you
> want python2 but your distro has foolishly made "python" refer to
> python3.
> 
> CC: Doug Goldstein <cardoe@xxxxxxxxxx>
> CC: Wei Liu <wl@xxxxxxx>
> CC: George Dunlap <george.dunlap@xxxxxxxxxx>
> Signed-off-by: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>

Acked-by: Wei Liu <wl@xxxxxxx>

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