1# SPDX-License-Identifier: FSFAP
2# ===========================================================================
3#  http://www.gnu.org/software/autoconf-archive/ax_prog_python_version.html
4# ===========================================================================
5#
6# SYNOPSIS
7#
8#   AX_PROG_PYTHON_VERSION([VERSION],[ACTION-IF-TRUE],[ACTION-IF-FALSE])
9#
10# DESCRIPTION
11#
12#   Makes sure that python supports the version indicated. If true the shell
13#   commands in ACTION-IF-TRUE are executed. If not the shell commands in
14#   ACTION-IF-FALSE are run. Note if $PYTHON is not set (for example by
15#   running AC_CHECK_PROG or AC_PATH_PROG) the macro will fail.
16#
17#   Example:
18#
19#     AC_PATH_PROG([PYTHON],[python])
20#     AX_PROG_PYTHON_VERSION([2.4.4],[ ... ],[ ... ])
21#
22#   This will check to make sure that the python you have supports at least
23#   version 2.4.4.
24#
25#   NOTE: This macro uses the $PYTHON variable to perform the check.
26#   AX_WITH_PYTHON can be used to set that variable prior to running this
27#   macro. The $PYTHON_VERSION variable will be valorized with the detected
28#   version.
29#
30# LICENSE
31#
32#   Copyright (c) 2009 Francesco Salvestrini <salvestrini@users.sourceforge.net>
33#
34#   Copying and distribution of this file, with or without modification, are
35#   permitted in any medium without royalty provided the copyright notice
36#   and this notice are preserved. This file is offered as-is, without any
37#   warranty.
38
39#serial 11
40
41AC_DEFUN([AX_PROG_PYTHON_VERSION],[
42    AC_REQUIRE([AC_PROG_SED])
43    AC_REQUIRE([AC_PROG_GREP])
44
45    AS_IF([test -n "$PYTHON"],[
46        ax_python_version="$1"
47
48        AC_MSG_CHECKING([for python version])
49        changequote(<<,>>)
50        python_version=`$PYTHON -V 2>&1 | $GREP "^Python " | $SED -e 's/^.* \([0-9]*\.[0-9]*\.[0-9]*\)/\1/'`
51        changequote([,])
52        AC_MSG_RESULT($python_version)
53
54	AC_SUBST([PYTHON_VERSION],[$python_version])
55
56        AX_COMPARE_VERSION([$ax_python_version],[le],[$python_version],[
57	    :
58            $2
59        ],[
60	    :
61            $3
62        ])
63    ],[
64        AC_MSG_WARN([could not find the python interpreter])
65        $3
66    ])
67])
68