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## ------------------------ -*- Autoconf -*- ## Python file handling ## From Andrew Dalke ## Updated by James Henstridge and other contributors. ## ------------------------ # Copyright (C) 1999-2021 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 python3.11 python3.10 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. dnl 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 At times, e.g., when building shared libraries, you may want dnl to know which OS platform Python thinks this is. dnl 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]) dnl emacs-page dnl If --with-python-sys-prefix is given, use the values of sys.prefix dnl and sys.exec_prefix for the corresponding values of PYTHON_PREFIX dnl and PYTHON_EXEC_PREFIX. Otherwise, use the GNU ${prefix} and dnl ${exec_prefix} variables. dnl dnl The two are made distinct variables so they can be overridden if dnl need be, although general consensus is that you shouldn't need dnl this separation. dnl dnl Also allow directly setting the prefixes via configure options, dnl overriding any default. dnl if test "x$prefix" = xNONE; then am__usable_prefix=$ac_default_prefix else am__usable_prefix=$prefix fi # Allow user to request using sys.* values from Python, # instead of the GNU $prefix values. AC_ARG_WITH([python-sys-prefix], [AS_HELP_STRING([--with-python-sys-prefix], [use Python's sys.prefix and sys.exec_prefix values])], [am_use_python_sys=:], [am_use_python_sys=false]) # Allow user to override whatever the default Python prefix is. AC_ARG_WITH([python_prefix], [AS_HELP_STRING([--with-python_prefix], [override the default PYTHON_PREFIX])], [am_python_prefix_subst=$withval am_cv_python_prefix=$withval AC_MSG_CHECKING([for explicit $am_display_PYTHON prefix]) AC_MSG_RESULT([$am_cv_python_prefix])], [ if $am_use_python_sys; then # using python sys.prefix value, not GNU AC_CACHE_CHECK([for python default $am_display_PYTHON prefix], [am_cv_python_prefix], [am_cv_python_prefix=`$PYTHON -c "import sys; sys.stdout.write(sys.prefix)"`]) dnl If sys.prefix is a subdir of $prefix, replace the literal value of dnl $prefix with a variable reference so it can be overridden. case $am_cv_python_prefix in $am__usable_prefix*) am__strip_prefix=`echo "$am__usable_prefix" | sed 's|.|.|g'` am_python_prefix_subst=`echo "$am_cv_python_prefix" | sed "s,^$am__strip_prefix,\\${prefix},"` ;; *) am_python_prefix_subst=$am_cv_python_prefix ;; esac else # using GNU prefix value, not python sys.prefix am_python_prefix_subst='${prefix}' am_python_prefix=$am_python_prefix_subst AC_MSG_CHECKING([for GNU default $am_display_PYTHON prefix]) AC_MSG_RESULT([$am_python_prefix]) fi]) # Substituting python_prefix_subst value. AC_SUBST([PYTHON_PREFIX], [$am_python_prefix_subst]) # emacs-page Now do it all over again for Python exec_prefix, but with yet # another conditional: fall back to regular prefix if that was specified. AC_ARG_WITH([python_exec_prefix], [AS_HELP_STRING([--with-python_exec_prefix], [override the default PYTHON_EXEC_PREFIX])], [am_python_exec_prefix_subst=$withval am_cv_python_exec_prefix=$withval AC_MSG_CHECKING([for explicit $am_display_PYTHON exec_prefix]) AC_MSG_RESULT([$am_cv_python_exec_prefix])], [ # no explicit --with-python_exec_prefix, but if # --with-python_prefix was given, use its value for python_exec_prefix too. AS_IF([test -n "$with_python_prefix"], [am_python_exec_prefix_subst=$with_python_prefix am_cv_python_exec_prefix=$with_python_prefix AC_MSG_CHECKING([for python_prefix-given $am_display_PYTHON exec_prefix]) AC_MSG_RESULT([$am_cv_python_exec_prefix])], [ # Set am__usable_exec_prefix whether using GNU or Python values, # since we use that variable for pyexecdir. if test "x$exec_prefix" = xNONE; then am__usable_exec_prefix=$am__usable_prefix else am__usable_exec_prefix=$exec_prefix fi # if $am_use_python_sys; then # using python sys.exec_prefix, not GNU AC_CACHE_CHECK([for python default $am_display_PYTHON exec_prefix], [am_cv_python_exec_prefix], [am_cv_python_exec_prefix=`$PYTHON -c "import sys; sys.stdout.write(sys.exec_prefix)"`]) dnl If sys.exec_prefix is a subdir of $exec_prefix, replace the dnl literal value of $exec_prefix with a variable reference so it can dnl be overridden. case $am_cv_python_exec_prefix in $am__usable_exec_prefix*) am__strip_prefix=`echo "$am__usable_exec_prefix" | sed 's|.|.|g'` am_python_exec_prefix_subst=`echo "$am_cv_python_exec_prefix" | sed "s,^$am__strip_prefix,\\${exec_prefix},"` ;; *) am_python_exec_prefix_subst=$am_cv_python_exec_prefix ;; esac else # using GNU $exec_prefix, not python sys.exec_prefix am_python_exec_prefix_subst='${exec_prefix}' am_python_exec_prefix=$am_python_exec_prefix_subst AC_MSG_CHECKING([for GNU default $am_display_PYTHON exec_prefix]) AC_MSG_RESULT([$am_python_exec_prefix]) fi])]) # Substituting python_exec_prefix_subst. AC_SUBST([PYTHON_EXEC_PREFIX], [$am_python_exec_prefix_subst]) # Factor out some code duplication into this shell variable. 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 emacs-page Set up 4 directories: dnl 1. 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. dnl AC_CACHE_CHECK([for $am_display_PYTHON script directory (pythondir)], [am_cv_python_pythondir], [if test "x$am_cv_python_prefix" = x; then am_py_prefix=$am__usable_prefix else am_py_prefix=$am_cv_python_prefix fi am_cv_python_pythondir=`$PYTHON -c " $am_python_setup_sysconfig if can_use_sysconfig: if hasattr(sysconfig, 'get_default_scheme'): scheme = sysconfig.get_default_scheme() else: scheme = sysconfig._get_default_scheme() if scheme == 'posix_local': # Debian's default scheme installs to /usr/local/ but we want to find headers in /usr/ scheme = 'posix_prefix' sitedir = sysconfig.get_path('purelib', scheme, vars={'base':'$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 2. pkgpythondir: $PACKAGE directory under pythondir. Was dnl PYTHON_SITE_PACKAGE in previous betas, but this naming is dnl more consistent with the rest of automake. dnl AC_SUBST([pkgpythondir], [\${pythondir}/$PACKAGE]) dnl 3. pyexecdir: directory for installing python extension modules dnl (shared libraries). dnl Query distutils for this directory. dnl AC_CACHE_CHECK([for $am_display_PYTHON extension module directory (pyexecdir)], [am_cv_python_pyexecdir], [if test "x$am_cv_python_exec_prefix" = x; then am_py_exec_prefix=$am__usable_exec_prefix else am_py_exec_prefix=$am_cv_python_exec_prefix fi am_cv_python_pyexecdir=`$PYTHON -c " $am_python_setup_sysconfig if can_use_sysconfig: if hasattr(sysconfig, 'get_default_scheme'): scheme = sysconfig.get_default_scheme() else: scheme = sysconfig._get_default_scheme() if scheme == 'posix_local': # Debian's default scheme installs to /usr/local/ but we want to find headers in /usr/ scheme = 'posix_prefix' sitedir = sysconfig.get_path('platlib', scheme, vars={'platbase':'$am_py_exec_prefix'}) else: from distutils import sysconfig sitedir = sysconfig.get_python_lib(1, 0, prefix='$am_py_exec_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 4. pkgpyexecdir: $(pyexecdir)/$(PACKAGE) dnl 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])])