git.m6w6.name Git - awesomized/libmemcached/blob - m4/pandora_python3_devel.m4

   1 dnl -*- mode: m4; c-basic-offset: 2; indent-tabs-mode: nil; -*-
   2 dnl vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
   3 dnl
   4 dnl pandora-build: A pedantic build system
   5 dnl
   6 dnl   Copyright (C) 2009 Sun Microsystems, Inc.
   7 dnl   Copyright (C) 2008 Sebastian Huber <sebastian-huber@web.de>
   8 dnl   Copyright (C) 2008 Alan W. Irwin <irwin@beluga.phys.uvic.ca>
   9 dnl   Copyright (C) 2008 Rafael Laboissiere <rafael@laboissiere.net>
  10 dnl   Copyright (C) 2008 Andrew Collier <colliera@ukzn.ac.za>
  11 dnl   Copyright (C) 2008 Matteo Settenvini <matteo@member.fsf.org>
  12 dnl   Copyright (C) 2008 Horst Knorr <hk_classes@knoda.org>
  13 dnl
  14 dnl   This program is free software: you can redistribute it and/or modify it
  15 dnl   under the terms of the GNU General Public License as published by the
  16 dnl   Free Software Foundation, either version 3 of the License, or (at your
  17 dnl   option) any later version.
  18 dnl
  19 dnl   This program is distributed in the hope that it will be useful, but
  20 dnl   WITHOUT ANY WARRANTY; without even the implied warranty of
  21 dnl   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
  22 dnl   Public License for more details.
  23 dnl
  24 dnl   You should have received a copy of the GNU General Public License along
  25 dnl   with this program. If not, see <http://www.gnu.org/licenses/>.
  26 dnl
  27 dnl   As a special exception, the respective Autoconf Macro's copyright owner
  28 dnl   gives unlimited permission to copy, distribute and modify the configure
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  30 dnl   need not follow the terms of the GNU General Public License when using
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  38 dnl   special exception to the GPL to apply to your modified version as well.
  39
  40 dnl SYNOPSIS
  41 dnl
  42 dnl   PANDORA_PYTHON3_DEVEL([version])
  43 dnl
  44 dnl DESCRIPTION
  45 dnl
  46 dnl   Note: Defines as a precious variable "PYTHON3_VERSION". Don't override it
  47 dnl   in your configure.ac.
  48 dnl
  49 dnl   This macro checks for Python and tries to get the include path to
  50 dnl   'Python.h'. It provides the $(PYTHON3_CPPFLAGS) and $(PYTHON3_LDFLAGS)
  51 dnl   output variables. It also exports $(PYTHON3_EXTRA_LIBS) and
  52 dnl   $(PYTHON3_EXTRA_LDFLAGS) for embedding Python in your code.
  53 dnl
  54 dnl   You can search for some particular version of Python by passing a
  55 dnl   parameter to this macro, for example ">= '2.3.1'", or "== '2.4'". Please
  56 dnl   note that you *have* to pass also an operator along with the version to
  57 dnl   match, and pay special attention to the single quotes surrounding the
  58 dnl   version number. Don't use "PYTHON3_VERSION" for this: that environment
  59 dnl   variable is declared as precious and thus reserved for the end-user.
  60 dnl
  61 dnl LAST MODIFICATION
  62 dnl
  63 dnl   2009-08-23
  64
  65 AC_DEFUN([PANDORA_PYTHON3_DEVEL],[
  66         #
  67         # Allow the use of a (user set) custom python version
  68         #
  69         AC_ARG_VAR([PYTHON3_VERSION],[The installed Python
  70                 version to use, for example '3.0'. This string
  71                 will be appended to the Python interpreter
  72                 canonical name.])
  73
  74
  75   AS_IF([test -z "$PYTHON3"],[
  76         AC_PATH_PROG([PYTHON3],[python[$PYTHON3_VERSION]])
  77   ])
  78         AS_IF([test -z "$PYTHON3"],[
  79           AC_MSG_ERROR([Cannot find python$PYTHON3_VERSION in your system path])
  80           PYTHON3_VERSION=""
  81   ])
  82
  83         #
  84         # if the macro parameter ``version'' is set, honour it
  85         #
  86         if test -n "$1"; then
  87                 AC_MSG_CHECKING([for a version of Python $1])
  88                 ac_supports_python3_ver=`$PYTHON3 -c "import sys, string; \
  89                         ver = string.split(sys.version)[[0]]; \
  90                         print(ver $1)"`
  91                 if test "$ac_supports_python3_ver" = "True"; then
  92                    AC_MSG_RESULT([yes])
  93                 else
  94                         AC_MSG_RESULT([no])
  95                         AC_MSG_ERROR([this package requires Python $1.
  96 If you have it installed, but it isn't the default Python
  97 interpreter in your system path, please pass the PYTHON3_VERSION
  98 variable to configure. See ``configure --help'' for reference.
  99 ])
 100                         PYTHON_VERSION=""
 101                 fi
 102         fi
 103
 104         #
 105         # Check if you have distutils, else fail
 106         #
 107         AC_MSG_CHECKING([for Python3 distutils package])
 108         ac_python3_distutils_result=`$PYTHON3 -c "import distutils" 2>&1`
 109         if test -z "$ac_python3_distutils_result"; then
 110                 AC_MSG_RESULT([yes])
 111         else
 112                 AC_MSG_RESULT([no])
 113                 AC_MSG_ERROR([cannot import Python3 module "distutils".
 114 Please check your Python3 installation. The error was:
 115 $ac_python3_distutils_result])
 116                 PYTHON3_VERSION=""
 117         fi
 118
 119         #
 120         # Check for Python include path
 121         #
 122         AC_MSG_CHECKING([for Python3 include path])
 123         if test -z "$PYTHON3_CPPFLAGS"; then
 124                 python3_path=`$PYTHON3 -c "import distutils.sysconfig; \
 125                         print(distutils.sysconfig.get_python_inc());"`
 126                 if test -n "${python3_path}"; then
 127                         python3_path="-I$python3_path"
 128                 fi
 129                 PYTHON3_CPPFLAGS=$python3_path
 130         fi
 131         AC_MSG_RESULT([$PYTHON3_CPPFLAGS])
 132         AC_SUBST([PYTHON3_CPPFLAGS])
 133
 134         #
 135         # Check for Python library path
 136         #
 137         AC_MSG_CHECKING([for Python3 library path])
 138         if test -z "$PYTHON3_LDFLAGS"; then
 139                 # (makes two attempts to ensure we've got a version number
 140                 # from the interpreter)
 141                 py3_version=`$PYTHON3 -c "from distutils.sysconfig import *; \
 142                         print(' '.join(get_config_vars('VERSION')))"`
 143                 if test "$py3_version" == "[None]"; then
 144                         if test -n "$PYTHON3_VERSION"; then
 145                                 py3_version=$PYTHON3_VERSION
 146                         else
 147                                 py3_version=`$PYTHON3 -c "import sys; \
 148                                         print(sys.version[[:3]])"`
 149                         fi
 150                 fi
 151
 152                 PYTHON3_LDFLAGS=`$PYTHON3 -c "from distutils.sysconfig import *; \
 153                         print('-L' + get_python_lib(0,1), \
 154                         '-lpython');"`$py3_version
 155         fi
 156         AC_MSG_RESULT([$PYTHON3_LDFLAGS])
 157         AC_SUBST([PYTHON3_LDFLAGS])
 158
 159         #
 160         # Check for site packages
 161         #
 162         AC_MSG_CHECKING([for Python3 site-packages path])
 163         if test -z "$PYTHON3_SITE_PKG"; then
 164                 PYTHON3_SITE_PKG=`$PYTHON3 -c "import distutils.sysconfig; \
 165                         print(distutils.sysconfig.get_python_lib(0,0));"`
 166         fi
 167         AC_MSG_RESULT([$PYTHON3_SITE_PKG])
 168         AC_SUBST([PYTHON3_SITE_PKG])
 169
 170         #
 171         # libraries which must be linked in when embedding
 172         #
 173         AC_MSG_CHECKING(for Python3 embedding libraries)
 174         if test -z "$PYTHON3_EMBED_LIBS"; then
 175            PYTHON3_EMBED_LIBS=`$PYTHON3 -c "import distutils.sysconfig; \
 176                 conf = distutils.sysconfig.get_config_var; \
 177                 print(conf('LOCALMODLIBS'), conf('LIBS'))"`
 178         fi
 179         AC_MSG_RESULT([$PYTHON3_EMBED_LIBS])
 180         AC_SUBST(PYTHON3_EMBED_LIBS)
 181
 182         #
 183         # linking flags needed when embedding
 184         #
 185         AC_MSG_CHECKING(for Python3 embedding linking flags)
 186         if test -z "$PYTHON3_EMBED_LDFLAGS"; then
 187                 PYTHON3_EMBED_LDFLAGS=`$PYTHON3 -c "import distutils.sysconfig; \
 188                         conf = distutils.sysconfig.get_config_var; \
 189                         print(conf('LINKFORSHARED'))"`
 190         fi
 191         AC_MSG_RESULT([$PYTHON3_EMBED_LDFLAGS])
 192         AC_SUBST(PYTHON3_EMBED_LDFLAGS)
 193
 194         #
 195         # final check to see if everything compiles alright
 196         #
 197         AC_MSG_CHECKING([for Python3 development environment consistency])
 198         AC_LANG_PUSH([C])
 199         # save current global flags
 200   ac_save_LIBS="$LIBS"
 201   ac_save_CPPFLAGS="$CPPFLAGS"
 202         LIBS="$ac_save_LIBS $PYTHON3_LDFLAGS"
 203         CPPFLAGS="$ac_save_CPPFLAGS $PYTHON3_CPPFLAGS"
 204         AC_TRY_LINK([
 205                 #include <Python.h>
 206         ],[
 207                 Py_Initialize();
 208         ],[python3exists=yes],[python3exists=no])
 209
 210         AC_MSG_RESULT([$python3exists])
 211
 212         if test ! "$python3exists" = "yes"; then
 213            AC_MSG_WARN([
 214   Could not link test program to Python3.
 215   Maybe the main Python3 library has been installed in some non-standard
 216   library path. If so, pass it to configure, via the LDFLAGS environment
 217   variable.
 218   Example: ./configure LDFLAGS="-L/usr/non-standard-path/python3/lib"
 219   ============================================================================
 220    ERROR!
 221    You probably have to install the development version of the Python3 package
 222    for your distribution.  The exact name of this package varies among them.
 223   ============================================================================
 224            ])
 225           PYTHON3_VERSION=""
 226         fi
 227         AC_LANG_POP
 228         # turn back to default flags
 229         CPPFLAGS="$ac_save_CPPFLAGS"
 230         LIBS="$ac_save_LIBS"
 231
 232         #
 233         # all done!
 234         #
 235 ])
 236