lyx_mirror/config/lyxpython.m4

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## ------------------------ -*- Autoconf -*-
# adapted for LyX from the automake python support.
## Python file handling
## From Andrew Dalke
## Updated by James Henstridge
## ------------------------
# Copyright (C) 1999-2015 Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
dnl Usage: LYX_PATH_PYTHON23(PY2-MIN-VERSION, PYTHON3-MIN-VERSION)
dnl Find a suitable Python interpreter, that is either python2 >= $1
dnl or python3 >= $2. Stop with an error message if it has not been found.
AC_DEFUN([LYX_PATH_PYTHON23],
[
m4_define(py2_ver, [patsubst($1,[\.],[,])])
m4_define(py3_ver, [patsubst($2,[\.],[,])])
m4_define_default([_AM_PYTHON_INTERPRETER_LIST],
[python python2 python3 python3.3 python3.2 python3.1 python3.0 python2.7 dnl
python2.6 python2.5 python2.4 python2.3 python2.2 python2.1 python2.0])
if test -n "$PYTHON"; then
# If the user set $PYTHON, use it and don't search something else.
AC_MSG_CHECKING([whether $PYTHON version is >= $1 or $2])
LYX_PYTHON_CHECK_VERSION([$PYTHON],
[AC_MSG_RESULT([yes])],
[AC_MSG_RESULT([no])
AC_MSG_ERROR([Python interpreter is not suitable])])
am_display_PYTHON=$PYTHON
else
# Otherwise, try each interpreter until we find one that satisfies
# LYX_PYTHON_CHECK_VERSION.
AC_CACHE_CHECK([for a Python interpreter with version >= $1 or $2],
[am_cv_pathless_PYTHON],[
for am_cv_pathless_PYTHON in _AM_PYTHON_INTERPRETER_LIST none; do
test "$am_cv_pathless_PYTHON" = none && break
LYX_PYTHON_CHECK_VERSION([$am_cv_pathless_PYTHON], [break])
done])
# Set $PYTHON to the absolute path of $am_cv_pathless_PYTHON.
if test "$am_cv_pathless_PYTHON" = none; then
PYTHON=:
else
AC_PATH_PROG([PYTHON], [$am_cv_pathless_PYTHON])
fi
am_display_PYTHON=$am_cv_pathless_PYTHON
fi
if test "$PYTHON" = : ; then
AC_MSG_ERROR([no suitable Python interpreter found])
fi
])
# LYX_PYTHON_CHECK_VERSION(PROG, [ACTION-IF-TRUE], [ACTION-IF-FALSE])
# ---------------------------------------------------------------------------
# Run ACTION-IF-TRUE if the Python interpreter PROG has version >= py2_ver or py3_ver.
# Run ACTION-IF-FALSE otherwise.
AC_DEFUN([LYX_PYTHON_CHECK_VERSION],
[prog="import sys
version = sys.version_info@<:@:3@:>@
sys.exit(not ((py2_ver) <= version < (3,0,0) or version >= (py3_ver)))"
AS_IF([AM_RUN_LOG([$1 -c "$prog"])], [$2], [$3])])