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d933d72fa9
Python 3.x shall have priority over python 2.x. In 2.5.0dev, support for python2 will be removed. Now, we ignore all pythonx.y names, which are not relevant, and do not try either the basic "python" name.
63 lines
2.5 KiB
Plaintext
63 lines
2.5 KiB
Plaintext
## ------------------------ -*- Autoconf -*-
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# adapted for LyX from the automake python support.
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## Python file handling
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## From Andrew Dalke
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## Updated by James Henstridge
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## ------------------------
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# Copyright (C) 1999-2015 Free Software Foundation, Inc.
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#
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# This file is free software; the Free Software Foundation
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# gives unlimited permission to copy and/or distribute it,
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# with or without modifications, as long as this notice is preserved.
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dnl Usage: LYX_PATH_PYTHON23(PY2-MIN-VERSION, PYTHON3-MIN-VERSION)
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dnl Find a suitable Python interpreter, that is either python2 >= $1
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dnl or python3 >= $2. Stop with an error message if it has not been found.
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AC_DEFUN([LYX_PATH_PYTHON23],
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[
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m4_define(py2_ver, [patsubst($1,[\.],[,])])
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m4_define(py3_ver, [patsubst($2,[\.],[,])])
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m4_define_default([_AM_PYTHON_INTERPRETER_LIST], [python3 python2])
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if test -n "$PYTHON"; then
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# If the user set $PYTHON, use it and don't search something else.
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AC_MSG_CHECKING([whether $PYTHON version is >= $1 or $2])
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LYX_PYTHON_CHECK_VERSION([$PYTHON],
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[AC_MSG_RESULT([yes])],
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[AC_MSG_RESULT([no])
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AC_MSG_ERROR([Python interpreter is not suitable])])
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am_display_PYTHON=$PYTHON
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else
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# Otherwise, try each interpreter until we find one that satisfies
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# LYX_PYTHON_CHECK_VERSION.
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AC_CACHE_CHECK([for a Python interpreter with version >= $1 or $2],
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[am_cv_pathless_PYTHON],[
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for am_cv_pathless_PYTHON in _AM_PYTHON_INTERPRETER_LIST none; do
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test "$am_cv_pathless_PYTHON" = none && break
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LYX_PYTHON_CHECK_VERSION([$am_cv_pathless_PYTHON], [break])
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done])
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# Set $PYTHON to the absolute path of $am_cv_pathless_PYTHON.
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if test "$am_cv_pathless_PYTHON" = none; then
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PYTHON=:
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else
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AC_PATH_PROG([PYTHON], [$am_cv_pathless_PYTHON])
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fi
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am_display_PYTHON=$am_cv_pathless_PYTHON
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fi
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if test "$PYTHON" = : ; then
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AC_MSG_ERROR([no suitable Python interpreter found])
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fi
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])
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# LYX_PYTHON_CHECK_VERSION(PROG, [ACTION-IF-TRUE], [ACTION-IF-FALSE])
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# ---------------------------------------------------------------------------
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# Run ACTION-IF-TRUE if the Python interpreter PROG has version >= py2_ver or py3_ver.
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# Run ACTION-IF-FALSE otherwise.
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AC_DEFUN([LYX_PYTHON_CHECK_VERSION],
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[prog="import sys
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version = sys.version_info@<:@:3@:>@
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sys.exit(not ((py2_ver) <= version < (3,0,0) or version >= (py3_ver)))"
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AS_IF([AM_RUN_LOG([$1 -c "$prog"])], [$2], [$3])])
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