1# =========================================================================== 2# http://www.gnu.org/software/autoconf-archive/ax_python_devel.html 3# =========================================================================== 4# 5# SYNOPSIS 6# 7# AX_PYTHON_DEVEL([version]) 8# 9# DESCRIPTION 10# 11# Note: Defines as a precious variable "PYTHON_VERSION". Don't override it 12# in your configure.ac. 13# 14# This macro checks for Python and tries to get the include path to 15# 'Python.h'. It provides the $(PYTHON_CPPFLAGS) and $(PYTHON_LDFLAGS) 16# output variables. It also exports $(PYTHON_EXTRA_LIBS) and 17# $(PYTHON_EXTRA_LDFLAGS) for embedding Python in your code. 18# 19# You can search for some particular version of Python by passing a 20# parameter to this macro, for example ">= '2.3.1'", or "== '2.4'". Please 21# note that you *have* to pass also an operator along with the version to 22# match, and pay special attention to the single quotes surrounding the 23# version number. Don't use "PYTHON_VERSION" for this: that environment 24# variable is declared as precious and thus reserved for the end-user. 25# 26# This macro should work for all versions of Python >= 2.1.0. As an end 27# user, you can disable the check for the python version by setting the 28# PYTHON_NOVERSIONCHECK environment variable to something else than the 29# empty string. 30# 31# If you need to use this macro for an older Python version, please 32# contact the authors. We're always open for feedback. 33# 34# LICENSE 35# 36# Copyright (c) 2009 Sebastian Huber <sebastian-huber@web.de> 37# Copyright (c) 2009 Alan W. Irwin 38# Copyright (c) 2009 Rafael Laboissiere <rafael@laboissiere.net> 39# Copyright (c) 2009 Andrew Collier 40# Copyright (c) 2009 Matteo Settenvini <matteo@member.fsf.org> 41# Copyright (c) 2009 Horst Knorr <hk_classes@knoda.org> 42# Copyright (c) 2013 Daniel Mullner <muellner@math.stanford.edu> 43# 44# This program is free software: you can redistribute it and/or modify it 45# under the terms of the GNU General Public License as published by the 46# Free Software Foundation, either version 3 of the License, or (at your 47# option) any later version. 48# 49# This program is distributed in the hope that it will be useful, but 50# WITHOUT ANY WARRANTY; without even the implied warranty of 51# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General 52# Public License for more details. 53# 54# You should have received a copy of the GNU General Public License along 55# with this program. If not, see <http://www.gnu.org/licenses/>. 56# 57# As a special exception, the respective Autoconf Macro's copyright owner 58# gives unlimited permission to copy, distribute and modify the configure 59# scripts that are the output of Autoconf when processing the Macro. You 60# need not follow the terms of the GNU General Public License when using 61# or distributing such scripts, even though portions of the text of the 62# Macro appear in them. The GNU General Public License (GPL) does govern 63# all other use of the material that constitutes the Autoconf Macro. 64# 65# This special exception to the GPL applies to versions of the Autoconf 66# Macro released by the Autoconf Archive. When you make and distribute a 67# modified version of the Autoconf Macro, you may extend this special 68# exception to the GPL to apply to your modified version as well. 69 70#serial 17 71 72AU_ALIAS([AC_PYTHON_DEVEL], [AX_PYTHON_DEVEL]) 73AC_DEFUN([AX_PYTHON_DEVEL],[ 74 # 75 # Allow the use of a (user set) custom python version 76 # 77 AC_ARG_VAR([PYTHON_VERSION],[The installed Python 78 version to use, for example '2.3'. This string 79 will be appended to the Python interpreter 80 canonical name.]) 81 82 AC_PATH_PROG([PYTHON],[python[$PYTHON_VERSION]]) 83 if test -z "$PYTHON"; then 84 AC_MSG_ERROR([Cannot find python$PYTHON_VERSION in your system path]) 85 PYTHON_VERSION="" 86 fi 87 88 # 89 # Check for a version of Python >= 2.1.0 90 # 91 AC_MSG_CHECKING([for a version of Python >= '2.1.0']) 92 ac_supports_python_ver=`$PYTHON -c "import sys; \ 93 ver = sys.version.split ()[[0]]; \ 94 print (ver >= '2.1.0')"` 95 if test "$ac_supports_python_ver" != "True"; then 96 if test -z "$PYTHON_NOVERSIONCHECK"; then 97 AC_MSG_RESULT([no]) 98 AC_MSG_FAILURE([ 99This version of the AC@&t@_PYTHON_DEVEL macro 100doesn't work properly with versions of Python before 1012.1.0. You may need to re-run configure, setting the 102variables PYTHON_CPPFLAGS, PYTHON_LDFLAGS, PYTHON_SITE_PKG, 103PYTHON_EXTRA_LIBS and PYTHON_EXTRA_LDFLAGS by hand. 104Moreover, to disable this check, set PYTHON_NOVERSIONCHECK 105to something else than an empty string. 106]) 107 else 108 AC_MSG_RESULT([skip at user request]) 109 fi 110 else 111 AC_MSG_RESULT([yes]) 112 fi 113 114 # 115 # if the macro parameter ``version'' is set, honour it 116 # 117 python_arg_version_not_found="False" 118 if test -n "$1"; then 119 AC_MSG_CHECKING([for a version of Python $1]) 120 ac_supports_python_ver=`$PYTHON -c "import sys; \ 121 ver = sys.version.split ()[[0]]; \ 122 print (ver $1)"` 123 if test "$ac_supports_python_ver" = "True"; then 124 AC_MSG_RESULT([yes]) 125 else 126 AC_MSG_RESULT([no]) 127#EF : MODIFICATION 128# _C_MSG_ERROR([this package requires Python $1. 129# If you have it installed, but it isn't the default Python 130# interpreter in your system path, please pass the PYTHON_VERSION 131# variable to configure. See ``configure --help'' for reference. 132# ]) 133 AC_MSG_WARN([this package should use Python $1. 134If you have it installed, but it isn't the default Python 135interpreter in your system path, please pass the PYTHON_VERSION 136variable to configure. See ``configure --help'' for reference. 137]) 138 PYTHON_VERSION="" 139#EF: Ajout 140 python_arg_version_not_found="True" 141 fi 142 fi 143 144 # 145 # Check if you have distutils, else fail 146 # 147#EF: Ajout 148 AS_IF([test x"$python_arg_version_found" == x"False"],[ 149 AC_MSG_CHECKING([for the distutils Python package]) 150 ac_distutils_result=`$PYTHON -c "import distutils" 2>&1` 151 if test -z "$ac_distutils_result"; then 152 AC_MSG_RESULT([yes]) 153 else 154 AC_MSG_RESULT([no]) 155 AC_MSG_ERROR([cannot import Python module "distutils". 156Please check your Python installation. The error was: 157$ac_distutils_result]) 158 PYTHON_VERSION="" 159 fi 160#EF: Ajout 161 ]) 162 163# 164 # Check for Python include path 165 # 166#EF: Ajout 167 AS_IF([test x"$python_arg_version_not_found" == x"False"],[ 168 AC_MSG_CHECKING([for Python include path]) 169 if test -z "$PYTHON_CPPFLAGS"; then 170 python_path=`$PYTHON -c "import distutils.sysconfig; \ 171 print (distutils.sysconfig.get_python_inc ());"` 172 plat_python_path=`$PYTHON -c "import distutils.sysconfig; \ 173 print (distutils.sysconfig.get_python_inc (plat_specific=1));"` 174 if test -n "${python_path}"; then 175 if test "${plat_python_path}" != "${python_path}"; then 176 python_path="-I$python_path -I$plat_python_path" 177 else 178 python_path="-I$python_path" 179 fi 180 fi 181 PYTHON_CPPFLAGS=$python_path 182 fi 183 AC_MSG_RESULT([$PYTHON_CPPFLAGS]) 184 AC_SUBST([PYTHON_CPPFLAGS]) 185#EF: Ajout 186 ]) 187 188 # 189 # Check for Python library path 190 # 191#EF: Ajout 192 AS_IF([test x"$python_arg_version_not_found" == x"False"],[ 193 AC_MSG_CHECKING([for Python library path]) 194 if test -z "$PYTHON_LDFLAGS"; then 195 # (makes two attempts to ensure we've got a version number 196 # from the interpreter) 197 ac_python_version=`cat<<EOD | $PYTHON - 198 199# join all versioning strings, on some systems 200# major/minor numbers could be in different list elements 201from distutils.sysconfig import * 202e = get_config_var('VERSION') 203if e is not None: 204 print(e) 205EOD` 206 207 if test -z "$ac_python_version"; then 208 if test -n "$PYTHON_VERSION"; then 209 ac_python_version=$PYTHON_VERSION 210 else 211 ac_python_version=`$PYTHON -c "import sys; \ 212 print (sys.version[[:3]])"` 213 fi 214 fi 215 216 # Make the versioning information available to the compiler 217 AC_DEFINE_UNQUOTED([HAVE_PYTHON], ["$ac_python_version"], 218 [If available, contains the Python version number currently in use.]) 219 220 # First, the library directory: 221 ac_python_libdir=`cat<<EOD | $PYTHON - 222 223# There should be only one 224import distutils.sysconfig 225e = distutils.sysconfig.get_config_var('LIBDIR') 226if e is not None: 227 print (e) 228EOD` 229 230 # Now, for the library: 231 ac_python_library=`cat<<EOD | $PYTHON - 232 233import distutils.sysconfig 234c = distutils.sysconfig.get_config_vars() 235if 'LDVERSION' in c: 236 print ('python'+c[['LDVERSION']]) 237else: 238 print ('python'+c[['VERSION']]) 239EOD` 240 241 # This small piece shamelessly adapted from PostgreSQL python macro; 242 # credits goes to momjian, I think. I'd like to put the right name 243 # in the credits, if someone can point me in the right direction... ? 244 # 245 if test -n "$ac_python_libdir" -a -n "$ac_python_library" 246 then 247 # use the official shared library 248 ac_python_library=`echo "$ac_python_library" | sed "s/^lib//"` 249 PYTHON_LDFLAGS="-L$ac_python_libdir -l$ac_python_library" 250 else 251 # old way: use libpython from python_configdir 252 ac_python_libdir=`$PYTHON -c \ 253 "from distutils.sysconfig import get_python_lib as f; \ 254 import os; \ 255 print (os.path.join(f(plat_specific=1, standard_lib=1), 'config'));"` 256 PYTHON_LDFLAGS="-L$ac_python_libdir -lpython$ac_python_version" 257 fi 258 259 if test -z "PYTHON_LDFLAGS"; then 260 AC_MSG_ERROR([ 261 Cannot determine location of your Python DSO. Please check it was installed with 262 dynamic libraries enabled, or try setting PYTHON_LDFLAGS by hand. 263 ]) 264 fi 265 fi 266 AC_MSG_RESULT([$PYTHON_LDFLAGS]) 267 AC_SUBST([PYTHON_LDFLAGS]) 268#EF: Ajout 269 ]) 270 271 # 272 # Check for site packages 273 # 274#EF: Ajout 275 AS_IF([test x"$python_arg_version_not_found" == x"False"],[ 276 AC_MSG_CHECKING([for Python site-packages path]) 277 if test -z "$PYTHON_SITE_PKG"; then 278 PYTHON_SITE_PKG=`$PYTHON -c "import distutils.sysconfig; \ 279 print (distutils.sysconfig.get_python_lib(0,0));"` 280 fi 281 AC_MSG_RESULT([$PYTHON_SITE_PKG]) 282 AC_SUBST([PYTHON_SITE_PKG]) 283#EF: Ajout 284 ]) 285 286 # 287 # libraries which must be linked in when embedding 288 # 289#EF: Ajout 290 AS_IF([test x"$python_arg_version_not_found" == x"False"],[ 291 AC_MSG_CHECKING(python extra libraries) 292 if test -z "$PYTHON_EXTRA_LIBS"; then 293 PYTHON_EXTRA_LIBS=`$PYTHON -c "import distutils.sysconfig; \ 294 conf = distutils.sysconfig.get_config_var; \ 295 print (conf('LIBS') + ' ' + conf('SYSLIBS'))"` 296 fi 297 AC_MSG_RESULT([$PYTHON_EXTRA_LIBS]) 298 AC_SUBST(PYTHON_EXTRA_LIBS) 299#EF: Ajout 300 ]) 301 302 # 303 # linking flags needed when embedding 304 # 305#EF: Ajout 306 AS_IF([test x"$python_arg_version_not_found" == x"False"],[ 307 AC_MSG_CHECKING(python extra linking flags) 308 if test -z "$PYTHON_EXTRA_LDFLAGS"; then 309 PYTHON_EXTRA_LDFLAGS=`$PYTHON -c "import distutils.sysconfig; \ 310 conf = distutils.sysconfig.get_config_var; \ 311 print (conf('LINKFORSHARED'))"` 312 fi 313 AC_MSG_RESULT([$PYTHON_EXTRA_LDFLAGS]) 314 AC_SUBST(PYTHON_EXTRA_LDFLAGS) 315#EF: Ajout 316 ]) 317 318 # 319 # final check to see if everything compiles alright 320 # 321#EF: Ajout 322 AS_IF([test x"$python_arg_version_not_found" == x"False"],[ 323 AC_MSG_CHECKING([consistency of all components of python development environment]) 324 # save current global flags 325 ac_save_LIBS="$LIBS" 326 ac_save_CPPFLAGS="$CPPFLAGS" 327 # echo "<--- ac_save_LIBS : $ac_save_LIBS ; ac_save_CPPFLAGS : $ac_save_CPPFLAGS -->" 328 LIBS="$ac_save_LIBS $PYTHON_LDFLAGS $PYTHON_EXTRA_LDFLAGS $PYTHON_EXTRA_LIBS" 329 CPPFLAGS="$ac_save_CPPFLAGS $PYTHON_CPPFLAGS" 330 # echo "<-- LIBS : $LIBS : CPPFLAGS : $CPPFLAGS -->" 331 AC_LANG_PUSH([C]) 332 AC_LINK_IFELSE([ 333 AC_LANG_PROGRAM([[#include <Python.h>]], 334 [[Py_Initialize();]]) 335 ],[pythonexists=yes],[pythonexists=no]) 336 AC_LANG_POP([C]) 337 # turn back to default flags 338 CPPFLAGS="$ac_save_CPPFLAGS" 339 LIBS="$ac_save_LIBS" 340 341 AC_MSG_RESULT([$pythonexists]) 342 343 if test ! "x$pythonexists" = "xyes"; then 344 AC_MSG_FAILURE([ 345 Could not link test program to Python. Maybe the main Python library has been 346 installed in some non-standard library path. If so, pass it to configure, 347 via the LDFLAGS environment variable. 348 Example: ./configure LDFLAGS="-L/usr/non-standard-path/python/lib" 349 ============================================================================ 350 ERROR! 351 You probably have to install the development version of the Python package 352 for your distribution. The exact name of this package varies among them. 353 ============================================================================ 354 ]) 355 PYTHON_VERSION="" 356 fi 357#EF: Ajout 358 ]) 359 360 # 361 # all done! 362 # 363]) 364