# =========================================================================== # http://autoconf-archive.cryp.to/ac_python_devel.html # =========================================================================== # # SYNOPSIS # # AC_PYTHON_DEVEL([version]) # # DESCRIPTION # # Note: Defines as a precious variable "PYTHON_VERSION". Don't override it # in your configure.ac. # # This macro checks for Python and tries to get the include path to # 'Python.h'. It provides the $(PYTHON_CPPFLAGS) and $(PYTHON_LDFLAGS) # output variables. It also exports $(PYTHON_EXTRA_LIBS) and # $(PYTHON_EXTRA_LDFLAGS) for embedding Python in your code. # # You can search for some particular version of Python by passing a # parameter to this macro, for example ">= '2.3.1'", or "== '2.4'". Please # note that you *have* to pass also an operator along with the version to # match, and pay special attention to the single quotes surrounding the # version number. Don't use "PYTHON_VERSION" for this: that environment # variable is declared as precious and thus reserved for the end-user. # # This macro should work for all versions of Python >= 2.1.0. As an end # user, you can disable the check for the python version by setting the # PYTHON_NOVERSIONCHECK environment variable to something else than the # empty string. # # If you need to use this macro for an older Python version, please # contact the authors. We're always open for feedback. # # LAST MODIFICATION # # 2008-04-12 # # COPYLEFT # # Copyright (c) 2008 Sebastian Huber # Copyright (c) 2008 Alan W. Irwin # Copyright (c) 2008 Rafael Laboissiere # Copyright (c) 2008 Andrew Collier # Copyright (c) 2008 Matteo Settenvini # Copyright (c) 2008 Horst Knorr # # This program is free software: you can redistribute it and/or modify it # under the terms of the GNU General Public License as published by the # Free Software Foundation, either version 3 of the License, or (at your # option) any later version. # # This program is distributed in the hope that it will be useful, but # WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General # Public License for more details. # # You should have received a copy of the GNU General Public License along # with this program. If not, see . # # As a special exception, the respective Autoconf Macro's copyright owner # gives unlimited permission to copy, distribute and modify the configure # scripts that are the output of Autoconf when processing the Macro. You # need not follow the terms of the GNU General Public License when using # or distributing such scripts, even though portions of the text of the # Macro appear in them. The GNU General Public License (GPL) does govern # all other use of the material that constitutes the Autoconf Macro. # # This special exception to the GPL applies to versions of the Autoconf # Macro released by the Autoconf Macro Archive. When you make and # distribute a modified version of the Autoconf Macro, you may extend this # special exception to the GPL to apply to your modified version as well. AC_DEFUN([AC_PYTHON_DEVEL],[ # # Allow the use of a (user set) custom python version # AC_ARG_VAR([PYTHON_VERSION],[The installed Python version to use, for example '2.3'. This string will be appended to the Python interpreter canonical name.]) AC_PATH_PROG([PYTHON],[python[$PYTHON_VERSION]]) if test -z "$PYTHON"; then AC_MSG_ERROR([Cannot find python$PYTHON_VERSION in your system path]) PYTHON_VERSION="" fi # # Check for a version of Python >= 2.1.0 # AC_MSG_CHECKING([for a version of Python >= '2.1.0']) ac_supports_python_ver=`$PYTHON -c "import sys, string; \ ver = string.split(sys.version)[[0]]; \ print ver >= '2.1.0'"` if test "$ac_supports_python_ver" != "True"; then if test -z "$PYTHON_NOVERSIONCHECK"; then AC_MSG_RESULT([no]) AC_MSG_FAILURE([ This version of the AC@&t@_PYTHON_DEVEL macro doesn't work properly with versions of Python before 2.1.0. You may need to re-run configure, setting the variables PYTHON_CPPFLAGS, PYTHON_LDFLAGS, PYTHON_SITE_PKG, PYTHON_EXTRA_LIBS and PYTHON_EXTRA_LDFLAGS by hand. Moreover, to disable this check, set PYTHON_NOVERSIONCHECK to something else than an empty string. ]) else AC_MSG_RESULT([skip at user request]) fi else AC_MSG_RESULT([yes]) fi # # if the macro parameter ``version'' is set, honour it # if test -n "$1"; then AC_MSG_CHECKING([for a version of Python $1]) ac_supports_python_ver=`$PYTHON -c "import sys, string; \ ver = string.split(sys.version)[[0]]; \ print ver $1"` if test "$ac_supports_python_ver" = "True"; then AC_MSG_RESULT([yes]) else AC_MSG_RESULT([no]) AC_MSG_ERROR([this package requires Python $1. If you have it installed, but it isn't the default Python interpreter in your system path, please pass the PYTHON_VERSION variable to configure. See ``configure --help'' for reference. ]) PYTHON_VERSION="" fi fi # # Check if you have distutils, else fail # AC_MSG_CHECKING([for the distutils Python package]) ac_distutils_result=`$PYTHON -c "import distutils" 2>&1` if test -z "$ac_distutils_result"; then AC_MSG_RESULT([yes]) else AC_MSG_RESULT([no]) AC_MSG_ERROR([cannot import Python module "distutils". Please check your Python installation. The error was: $ac_distutils_result]) PYTHON_VERSION="" fi # # Check for Python include path # AC_MSG_CHECKING([for Python include path]) if test -z "$PYTHON_CPPFLAGS"; then python_path=`$PYTHON -c "import distutils.sysconfig; \ print distutils.sysconfig.get_python_inc();"` if test -n "${python_path}"; then python_path="-I$python_path" fi PYTHON_CPPFLAGS=$python_path fi AC_MSG_RESULT([$PYTHON_CPPFLAGS]) AC_SUBST([PYTHON_CPPFLAGS]) # # Check for Python library path # AC_MSG_CHECKING([for Python library path]) if test -z "$PYTHON_LDFLAGS"; then # (makes two attempts to ensure we've got a version number # from the interpreter) py_version=`$PYTHON -c "from distutils.sysconfig import *; \ from string import join; \ print join(get_config_vars('VERSION'))"` if test "$py_version" = "[None]"; then if test -n "$PYTHON_VERSION"; then py_version=$PYTHON_VERSION else py_version=`$PYTHON -c "import sys; \ print sys.version[[:3]]"` fi fi PYTHON_LDFLAGS=`$PYTHON -c "from distutils.sysconfig import *; \ from string import join; \ print '-L' + get_python_lib(0,1), \ '-lpython';"`$py_version fi AC_MSG_RESULT([$PYTHON_LDFLAGS]) AC_SUBST([PYTHON_LDFLAGS]) # # Check for site packages # AC_MSG_CHECKING([for Python site-packages path]) if test -z "$PYTHON_SITE_PKG"; then PYTHON_SITE_PKG=`$PYTHON -c "import distutils.sysconfig; \ print distutils.sysconfig.get_python_lib(0,0);"` fi AC_MSG_RESULT([$PYTHON_SITE_PKG]) AC_SUBST([PYTHON_SITE_PKG]) # # libraries which must be linked in when embedding # AC_MSG_CHECKING(python extra libraries) if test -z "$PYTHON_EXTRA_LIBS"; then PYTHON_EXTRA_LIBS=`$PYTHON -c "import distutils.sysconfig; \ conf = distutils.sysconfig.get_config_var; \ print conf('LOCALMODLIBS'), conf('LIBS')"` fi AC_MSG_RESULT([$PYTHON_EXTRA_LIBS]) AC_SUBST(PYTHON_EXTRA_LIBS) # # linking flags needed when embedding # AC_MSG_CHECKING(python extra linking flags) if test -z "$PYTHON_EXTRA_LDFLAGS"; then PYTHON_EXTRA_LDFLAGS=`$PYTHON -c "import distutils.sysconfig; \ conf = distutils.sysconfig.get_config_var; \ print conf('LINKFORSHARED')"` fi AC_MSG_RESULT([$PYTHON_EXTRA_LDFLAGS]) AC_SUBST(PYTHON_EXTRA_LDFLAGS) # # final check to see if everything compiles alright # AC_MSG_CHECKING([consistency of all components of python development environment]) AC_LANG_PUSH([C]) # save current global flags LIBS="$ac_save_LIBS $PYTHON_LDFLAGS" CPPFLAGS="$ac_save_CPPFLAGS $PYTHON_CPPFLAGS" AC_TRY_LINK([ #include ],[ Py_Initialize(); ],[pythonexists=yes],[pythonexists=no]) AC_MSG_RESULT([$pythonexists]) if test ! "$pythonexists" = "yes"; then AC_MSG_ERROR([ Could not link test program to Python. Maybe the main Python library has been installed in some non-standard library path. If so, pass it to configure, via the LDFLAGS environment variable. Example: ./configure LDFLAGS="-L/usr/non-standard-path/python/lib" ============================================================================ ERROR! You probably have to install the development version of the Python package for your distribution. The exact name of this package varies among them. ============================================================================ ]) PYTHON_VERSION="" fi AC_LANG_POP # turn back to default flags CPPFLAGS="$ac_save_CPPFLAGS" LIBS="$ac_save_LIBS" # # all done! # ])