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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($2,[\.],[,])])
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m4_define_default([_AM_PYTHON_INTERPRETER_LIST], [python3 python2 python])
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if test -n "$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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