dnl @synopsis AC_PYTHON_DEVEL([version]) dnl dnl Note: Defines as a precious variable "PYTHON_VERSION". Don't dnl override it in your configure.ac. dnl dnl This macro checks for Python and tries to get the include path to dnl 'Python.h'. It provides the $(PYTHON_CPPFLAGS) and $(PYTHON_LDFLAGS) dnl output variables. dnl It also exports $(PYTHON_EXTRA_LIBS) and $(PYTHON_EXTRA_LDFLAGS) dnl for embedding Python in your code. dnl dnl You can search for some particular version of Python by passing a dnl parameter to this macro, for example ">= '2.3.1'", or "== '2.4'". dnl Please note that you *have* to pass also an operator along dnl with the version to match, and pay special attention to the dnl single quotes surrounding the version number. dnl Don't use "PYTHON_VERSION" for this: that environment variable is dnl declared as precious and thus reserved for the end-user. dnl dnl This macro should work for all versions of Python >= 2.1.0. As dnl an end user, you can disable the check for the python version dnl by setting the PYTHON_NOVERSIONCHECK environment variable dnl to something else than the empty string. dnl dnl If you need to use this macro for an older Python version, please dnl contact the authors. We're always open for feedback. dnl dnl @category InstalledPackages dnl @author Sebastian Huber dnl @author Alan W. Irwin dnl @author Rafael Laboissiere dnl @author Andrew Collier dnl @author Matteo Settenvini dnl @author Horst Knorr dnl @version 2008-01-16 dnl @license GPLWithACException AC_DEFUN([AC_PYTHON_DEVEL],[ # # Allow the use of a (user set) custom python version # AC_ARG_VAR([PYTHON_VERSION],[The installed Python version to use, for example '2.3'. This string will be appended to the Python interpreter canonical name.]) AC_PATH_PROG([PYTHON],[python[$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) ac_python_version=`$PYTHON -c "from distutils.sysconfig import *; \ from string import join; \ print join(get_config_vars('VERSION'))"` if test "$ac_python_version" = "[None]"; then if test -n "$PYTHON_VERSION"; then ac_python_version=$PYTHON_VERSION else ac_python_version=`$PYTHON -c "import sys; \ print sys.version[[:3]]"` fi fi # First, the library directory: ac_python_libdir=`$PYTHON -c \ "import distutils.sysconfig,string; \ print string.join(filter(None, \ distutils.sysconfig.get_config_vars('LIBDIR')))"` # Before checking for libpythonX.Y, we need to know # the extension the OS we're on uses for libraries: ac_python_soext=`$PYTHON -c \ "import distutils.sysconfig, string; \ print string.join(filter(None, \ distutils.sysconfig.get_config_vars('SO')))"` # Now, for the library: ac_python_soname=`$PYTHON -c \ "import distutils.sysconfig,string; \ print string.join(filter(None, \ distutils.sysconfig.get_config_vars('LDLIBRARY')))"` # Strip away extension from the end to canonicalize its name: ac_python_library=`echo "$ac_python_soname" | sed "s/${ac_python_soext}$//"` # This small piece shamelessly adapted from PostgreSQL python macro; # credits goes to momjian, I think. I'd like to put the right name # in the credits, if someone can point me in the right direction... ? # if test -n "$ac_python_libdir" -a -n "$ac_python_library" \ -a x"$ac_python_library" != x"$ac_python_soname" then # use the official shared library ac_python_library=`echo "$ac_python_library" | sed "s/^lib//"` PYTHON_LDFLAGS="-L$ac_python_libdir -l$ac_python_library" else # old way: use libpython from python_configdir ac_python_libdir=`$PYTHON -c \ "from distutils.sysconfig import get_python_lib as f; \ import os; \ print os.path.join(f(plat_specific=1,standard_lib=1),'config');"` PYTHON_LDFLAGS="-L$ac_python_libdir -lpython$ac_python_version" fi if test -z "PYTHON_LDFLAGS"; then AC_MSG_ERROR([ Cannot determine location of your Python DSO. Please check it was installed with dynamic libraries enabled, or try setting PYTHON_LDFLAGS by hand. ]) fi fi AC_MSG_RESULT([$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([$PYTHON_EXTRA_LDFLAGS]) AC_SUBST(PYTHON_EXTRA_LDFLAGS) # # final check to see if everything compiles alright # AC_MSG_CHECKING([consistency of all components of python development environment]) # save current global flags LIBS="$ac_save_LIBS $PYTHON_LDFLAGS" CPPFLAGS="$ac_save_CPPFLAGS $PYTHON_CPPFLAGS" AC_LANG_PUSH([C]) AC_LINK_IFELSE([ AC_LANG_PROGRAM([[#include ]], [[Py_Initialize();]]) ],[pythonexists=yes],[pythonexists=no]) AC_LANG_POP([C]) # turn back to default flags CPPFLAGS="$ac_save_CPPFLAGS" LIBS="$ac_save_LIBS" AC_MSG_RESULT([$pythonexists]) if test ! "x$pythonexists" = "xyes"; then AC_MSG_FAILURE([ 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 # # all done! # ])