[Spice-devel] [PATCH spice-common v2] spice-deps: Set python version based on modules availability

[Christophe Fergeau]

On Mon, Nov 28, 2016 at 03:11:18PM +0100, Pavel Grunt wrote:
> Building spice or spice-gtk from git requires python modules pyparsing
> and six. Search for them in the both Python versions and set
> the Python version accordingly.
> ---
> v2: Keep user set (required) version of Python
> ---
>  m4/spice-deps.m4 | 20 +++++++++++++++++---
>  1 file changed, 17 insertions(+), 3 deletions(-)
> 
> diff --git a/m4/spice-deps.m4 b/m4/spice-deps.m4
> index 3b22422..3f9af43 100644
> --- a/m4/spice-deps.m4
> +++ b/m4/spice-deps.m4
> @@ -155,15 +155,29 @@ AC_DEFUN([SPICE_CHECK_GLIB2], [
>  # tarballs so they are disabled by default.
>  #---------------------------
>  AC_DEFUN([SPICE_CHECK_PYTHON_MODULES], [
> -    AM_PATH_PYTHON
>      AC_ARG_ENABLE([python-checks],
>          AS_HELP_STRING([--enable-python-checks=@<:@yes/no@:>@],
>                         [Enable checks for Python modules needed to build from git @<:@default=no@:>@]),
>                         [],
>                         [enable_python_checks="no"])
>      if test "x$enable_python_checks" != "xno"; then
> -        AX_PYTHON_MODULE([six], [1])
> -        AX_PYTHON_MODULE([pyparsing], [1])
> +        AS_IF([test -n "$PYTHON"], # already set required PYTHON version
> +              [AM_PATH_PYTHON
> +               AX_PYTHON_MODULE([six], [1])
> +               AX_PYTHON_MODULE([pyparsing], [1])],
> +              [PYTHON=python3
> +               AX_PYTHON_MODULE([six])
> +               AX_PYTHON_MODULE([pyparsing])
> +               test "$HAVE_PYMOD_SIX" = "yes" && test "$HAVE_PYMOD_PYPARSING" = "yes"],

Sorry, just noticed that you can do
AX_PYTHON_MODULE([six], [0], [python3]) (which is the default)
or
AX_PYTHON_MODULE([six], [0], [python])

rather than setting PYTHON=python3/PYTHON(python2)

Acked-by: Christophe Fergeau <cfergeau at redhat.com>
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