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Diffstat (limited to 'm4/python.m4')
| -rw-r--r-- | m4/python.m4 | 244 |
1 files changed, 244 insertions, 0 deletions
diff --git a/m4/python.m4 b/m4/python.m4 new file mode 100644 index 0000000..b2302ba --- /dev/null +++ b/m4/python.m4 @@ -0,0 +1,244 @@ +## ------------------------ -*- Autoconf -*- +## Python file handling +## From Andrew Dalke +## Updated by James Henstridge and other contributors. +## ------------------------ +# Copyright (C) 1999-2020 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. + + +# AM_PATH_PYTHON([MINIMUM-VERSION], [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND]) +# --------------------------------------------------------------------------- +# Adds support for distributing Python modules and packages. To +# install modules, copy them to $(pythondir), using the python_PYTHON +# automake variable. To install a package with the same name as the +# automake package, install to $(pkgpythondir), or use the +# pkgpython_PYTHON automake variable. +# +# The variables $(pyexecdir) and $(pkgpyexecdir) are provided as +# locations to install python extension modules (shared libraries). +# Another macro is required to find the appropriate flags to compile +# extension modules. +# +# If your package is configured with a different prefix to python, +# users will have to add the install directory to the PYTHONPATH +# environment variable, or create a .pth file (see the python +# documentation for details). +# +# If the MINIMUM-VERSION argument is passed, AM_PATH_PYTHON will +# cause an error if the version of python installed on the system +# doesn't meet the requirement. MINIMUM-VERSION should consist of +# numbers and dots only. +AC_DEFUN([AM_PATH_PYTHON], + [ + dnl Find a Python interpreter. Python versions prior to 2.0 are not + dnl supported. (2.0 was released on October 16, 2000). + m4_define_default([_AM_PYTHON_INTERPRETER_LIST], +[python python2 python3 dnl + python3.9 python3.8 python3.7 python3.6 python3.5 python3.4 python3.3 dnl + python3.2 python3.1 python3.0 dnl + python2.7 python2.6 python2.5 python2.4 python2.3 python2.2 python2.1 dnl + python2.0]) + + AC_ARG_VAR([PYTHON], [the Python interpreter]) + + m4_if([$1],[],[ + dnl No version check is needed. + # Find any Python interpreter. + if test -z "$PYTHON"; then + AC_PATH_PROGS([PYTHON], _AM_PYTHON_INTERPRETER_LIST, :) + fi + am_display_PYTHON=python + ], [ + dnl A version check is needed. + 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 >= $1]) + AM_PYTHON_CHECK_VERSION([$PYTHON], [$1], + [AC_MSG_RESULT([yes])], + [AC_MSG_RESULT([no]) + AC_MSG_ERROR([Python interpreter is too old])]) + am_display_PYTHON=$PYTHON + else + # Otherwise, try each interpreter until we find one that satisfies + # VERSION. + AC_CACHE_CHECK([for a Python interpreter with version >= $1], + [am_cv_pathless_PYTHON],[ + for am_cv_pathless_PYTHON in _AM_PYTHON_INTERPRETER_LIST none; do + test "$am_cv_pathless_PYTHON" = none && break + AM_PYTHON_CHECK_VERSION([$am_cv_pathless_PYTHON], [$1], [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 + dnl Run any user-specified action, or abort. + m4_default([$3], [AC_MSG_ERROR([no suitable Python interpreter found])]) + else + + dnl Query Python for its version number. Although site.py simply uses + dnl sys.version[:3], printing that failed with Python 3.10, since the + dnl trailing zero was eliminated. So now we output just the major + dnl and minor version numbers, as numbers. Apparently the tertiary + dnl version is not of interest. + + AC_CACHE_CHECK([for $am_display_PYTHON version], [am_cv_python_version], + [am_cv_python_version=`$PYTHON -c "import sys; print('%u.%u' % sys.version_info[[:2]])"`]) + AC_SUBST([PYTHON_VERSION], [$am_cv_python_version]) + + dnl Use the values of $prefix and $exec_prefix for the corresponding + dnl values of PYTHON_PREFIX and PYTHON_EXEC_PREFIX. These are made + dnl distinct variables so they can be overridden if need be. However, + dnl general consensus is that you shouldn't need this ability. + + AC_SUBST([PYTHON_PREFIX], ['${prefix}']) + AC_SUBST([PYTHON_EXEC_PREFIX], ['${exec_prefix}']) + + dnl At times (like when building shared libraries) you may want + dnl to know which OS platform Python thinks this is. + + AC_CACHE_CHECK([for $am_display_PYTHON platform], [am_cv_python_platform], + [am_cv_python_platform=`$PYTHON -c "import sys; sys.stdout.write(sys.platform)"`]) + AC_SUBST([PYTHON_PLATFORM], [$am_cv_python_platform]) + + # Just factor out some code duplication. + am_python_setup_sysconfig="\ +import sys +# Prefer sysconfig over distutils.sysconfig, for better compatibility +# with python 3.x. See automake bug#10227. +try: + import sysconfig +except ImportError: + can_use_sysconfig = 0 +else: + can_use_sysconfig = 1 +# Can't use sysconfig in CPython 2.7, since it's broken in virtualenvs: +# <https://github.com/pypa/virtualenv/issues/118> +try: + from platform import python_implementation + if python_implementation() == 'CPython' and sys.version[[:3]] == '2.7': + can_use_sysconfig = 0 +except ImportError: + pass" + + dnl Set up 4 directories: + + dnl pythondir -- where to install python scripts. This is the + dnl site-packages directory, not the python standard library + dnl directory like in previous automake betas. This behavior + dnl is more consistent with lispdir.m4 for example. + dnl Query distutils for this directory. + AC_CACHE_CHECK([for $am_display_PYTHON script directory], + [am_cv_python_pythondir], + [if test "x$prefix" = xNONE + then + am_py_prefix=$ac_default_prefix + else + am_py_prefix=$prefix + fi + am_cv_python_pythondir=`$PYTHON -c " +$am_python_setup_sysconfig +if can_use_sysconfig: + sitedir = sysconfig.get_path('purelib', vars={'base':'$am_py_prefix'}) +else: + from distutils import sysconfig + sitedir = sysconfig.get_python_lib(0, 0, prefix='$am_py_prefix') +sys.stdout.write(sitedir)"` + case $am_cv_python_pythondir in + $am_py_prefix*) + am__strip_prefix=`echo "$am_py_prefix" | sed 's|.|.|g'` + am_cv_python_pythondir=`echo "$am_cv_python_pythondir" | sed "s,^$am__strip_prefix,$PYTHON_PREFIX,"` + ;; + *) + case $am_py_prefix in + /usr|/System*) ;; + *) + am_cv_python_pythondir=$PYTHON_PREFIX/lib/python$PYTHON_VERSION/site-packages + ;; + esac + ;; + esac + ]) + AC_SUBST([pythondir], [$am_cv_python_pythondir]) + + dnl pkgpythondir -- $PACKAGE directory under pythondir. Was + dnl PYTHON_SITE_PACKAGE in previous betas, but this naming is + dnl more consistent with the rest of automake. + + AC_SUBST([pkgpythondir], [\${pythondir}/$PACKAGE]) + + dnl pyexecdir -- directory for installing python extension modules + dnl (shared libraries) + dnl Query distutils for this directory. + AC_CACHE_CHECK([for $am_display_PYTHON extension module directory], + [am_cv_python_pyexecdir], + [if test "x$exec_prefix" = xNONE + then + am_py_exec_prefix=$am_py_prefix + else + am_py_exec_prefix=$exec_prefix + fi + am_cv_python_pyexecdir=`$PYTHON -c " +$am_python_setup_sysconfig +if can_use_sysconfig: + sitedir = sysconfig.get_path('platlib', vars={'platbase':'$am_py_prefix'}) +else: + from distutils import sysconfig + sitedir = sysconfig.get_python_lib(1, 0, prefix='$am_py_prefix') +sys.stdout.write(sitedir)"` + case $am_cv_python_pyexecdir in + $am_py_exec_prefix*) + am__strip_prefix=`echo "$am_py_exec_prefix" | sed 's|.|.|g'` + am_cv_python_pyexecdir=`echo "$am_cv_python_pyexecdir" | sed "s,^$am__strip_prefix,$PYTHON_EXEC_PREFIX,"` + ;; + *) + case $am_py_exec_prefix in + /usr|/System*) ;; + *) + am_cv_python_pyexecdir=$PYTHON_EXEC_PREFIX/lib/python$PYTHON_VERSION/site-packages + ;; + esac + ;; + esac + ]) + AC_SUBST([pyexecdir], [$am_cv_python_pyexecdir]) + + dnl pkgpyexecdir -- $(pyexecdir)/$(PACKAGE) + + AC_SUBST([pkgpyexecdir], [\${pyexecdir}/$PACKAGE]) + + dnl Run any user-specified action. + $2 + fi + +]) + + +# AM_PYTHON_CHECK_VERSION(PROG, VERSION, [ACTION-IF-TRUE], [ACTION-IF-FALSE]) +# --------------------------------------------------------------------------- +# Run ACTION-IF-TRUE if the Python interpreter PROG has version >= VERSION. +# Run ACTION-IF-FALSE otherwise. +# This test uses sys.hexversion instead of the string equivalent (first +# word of sys.version), in order to cope with versions such as 2.2c1. +# This supports Python 2.0 or higher. (2.0 was released on October 16, 2000). +AC_DEFUN([AM_PYTHON_CHECK_VERSION], + [prog="import sys +# split strings by '.' and convert to numeric. Append some zeros +# because we need at least 4 digits for the hex conversion. +# map returns an iterator in Python 3.0 and a list in 2.x +minver = list(map(int, '$2'.split('.'))) + [[0, 0, 0]] +minverhex = 0 +# xrange is not present in Python 3.0 and range returns an iterator +for i in list(range(0, 4)): minverhex = (minverhex << 8) + minver[[i]] +sys.exit(sys.hexversion < minverhex)" + AS_IF([AM_RUN_LOG([$1 -c "$prog"])], [$3], [$4])]) |