# Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2008, 2009, # 2011 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_PYTHON2([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_PYTHON2 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. # # AM_PATH_PYTHON2 is based on AM_PATH_PYTHON but will search only # Python 2 locations. AC_DEFUN([AM_PATH_PYTHON2], [ 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], [python2 python2.7 dnl python2.6 python2.5 python2.4 python2.3 python2.2 python2.1 python2.0 dnl python]) 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 >= $1]) AM_PYTHON2_CHECK_VERSION([$PYTHON], [$1], [AC_MSG_RESULT(yes)], [AC_MSG_ERROR(too old)]) am_display_PYTHON=$PYTHON else # Otherwise, try each interpreter until we find one that satisfies # VERSION. AC_CACHE_CHECK([for a Python 2 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_PYTHON2_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. Getting [:3] seems to be dnl the best way to do this; it's what "site.py" does in the standard dnl library. AC_CACHE_CHECK([for $am_display_PYTHON version], [am_cv_python_version], [am_cv_python_version=`$PYTHON -c "import sys; sys.stdout.write(sys.version[[:3]])"`]) 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]) 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=`$PYTHON -c "import sys; from distutils import sysconfig; sys.stdout.write(sysconfig.get_python_lib(0,0,prefix='$am_py_prefix'))" 2>/dev/null` 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=`$PYTHON -c "import sys; from distutils import sysconfig; sys.stdout.write(sysconfig.get_python_lib(1,0,prefix='$am_py_exec_prefix'))" 2>/dev/null` 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_PYTHON2_CHECK_VERSION(PROG, VERSION, [ACTION-IF-TRUE], [ACTION-IF-FALSE]) # --------------------------------------------------------------------------- # Run ACTION-IF-TRUE if the Python interpreter PROG has version >= VERSION # and version == 3. # 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). # # Based on AM_PYTHON_CHECK_VERSION but for Python 2 only. AC_DEFUN([AM_PYTHON2_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.version_info.major only available since Python 2.7. # use sys.version_info[0] instead. # Double the square brackets for M4 syntax. sys.exit(sys.version_info[[0]] != 2 or sys.hexversion < minverhex)" AS_IF([AM_RUN_LOG([$1 -c "$prog"])], [$3], [$4])]) ## Find the install dirs for the python installation. ## By James Henstridge dnl a macro to check for ability to create python extensions dnl AM_CHECK_PYTHON_HEADERS([ACTION-IF-POSSIBLE], [ACTION-IF-NOT-POSSIBLE]) dnl function also defines PYTHON_INCLUDES AC_DEFUN([AM_CHECK_PYTHON_HEADERS], [AC_REQUIRE([AM_PATH_PYTHON2]) AC_MSG_CHECKING(for headers required to compile python extensions) dnl deduce PYTHON_INCLUDES py_prefix=`$PYTHON -c "import sys; print(sys.prefix)"` py_exec_prefix=`$PYTHON -c "import sys; print(sys.exec_prefix)"` PYTHON_INCLUDES="-I${py_prefix}/include/python${PYTHON_VERSION}" if test "$py_prefix" != "$py_exec_prefix"; then PYTHON_INCLUDES="$PYTHON_INCLUDES -I${py_exec_prefix}/include/python${PYTHON_VERSION}" if test "$PYTHON_PLATFORM" = "win32"; then dnl Win32 doesn't always have a versioned directory for headers PYTHON_INCLUDES="$PYTHON_INCLUDES -I${py_exec_prefix}/include" fi fi if test "$PYTHON_PLATFORM" = "win32"; then PYTHON_INCLUDES="$PYTHON_INCLUDES -I${py_prefix}/include" fi AC_SUBST(PYTHON_INCLUDES) dnl check if the headers exist: save_CPPFLAGS="$CPPFLAGS" CPPFLAGS="$CPPFLAGS $PYTHON_INCLUDES" AC_TRY_CPP([#include <Python.h>],dnl [AC_MSG_RESULT(found) $1],dnl [AC_MSG_RESULT(not found) $2]) CPPFLAGS="$save_CPPFLAGS" ])