python.m4 (7637B)
1 ## ------------------------ 2 ## Python file handling 3 ## From Andrew Dalke 4 ## Updated by James Henstridge 5 ## ------------------------ 6 7 # Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004 8 # Free Software Foundation, Inc. 9 10 # This program is free software; you can redistribute it and/or modify 11 # it under the terms of the GNU General Public License as published by 12 # the Free Software Foundation; either version 2, or (at your option) 13 # any later version. 14 15 # This program is distributed in the hope that it will be useful, 16 # but WITHOUT ANY WARRANTY; without even the implied warranty of 17 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 # GNU General Public License for more details. 19 20 # You should have received a copy of the GNU General Public License 21 # along with this program; if not, write to the Free Software 22 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 23 # 02111-1307, USA. 24 25 # AM_PATH_PYTHON([MINIMUM-VERSION], [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND]) 26 27 # Adds support for distributing Python modules and packages. To 28 # install modules, copy them to $(pythondir), using the python_PYTHON 29 # automake variable. To install a package with the same name as the 30 # automake package, install to $(pkgpythondir), or use the 31 # pkgpython_PYTHON automake variable. 32 33 # The variables $(pyexecdir) and $(pkgpyexecdir) are provided as 34 # locations to install python extension modules (shared libraries). 35 # Another macro is required to find the appropriate flags to compile 36 # extension modules. 37 38 # If your package is configured with a different prefix to python, 39 # users will have to add the install directory to the PYTHONPATH 40 # environment variable, or create a .pth file (see the python 41 # documentation for details). 42 43 # If the MINIMUM-VERSION argument is passed, AM_PATH_PYTHON will 44 # cause an error if the version of python installed on the system 45 # doesn't meet the requirement. MINIMUM-VERSION should consist of 46 # numbers and dots only. 47 48 AC_DEFUN([AM_PATH_PYTHON], 49 [ 50 dnl Find a Python interpreter. Python versions prior to 1.5 are not 51 dnl supported because the default installation locations changed from 52 dnl $prefix/lib/site-python in 1.4 to $prefix/lib/python1.5/site-packages 53 dnl in 1.5. 54 m4_define([_AM_PYTHON_INTERPRETER_LIST], 55 [python python2 python2.4 python2.3 python2.2 dnl 56 python2.1 python2.0 python1.6 python1.5]) 57 58 m4_if([$1],[],[ 59 dnl No version check is needed. 60 # Find any Python interpreter. 61 if test -z "$PYTHON"; then 62 PYTHON=: 63 AC_PATH_PROGS([PYTHON], _AM_PYTHON_INTERPRETER_LIST) 64 fi 65 am_display_PYTHON=python 66 ], [ 67 dnl A version check is needed. 68 if test -n "$PYTHON"; then 69 # If the user set $PYTHON, use it and don't search something else. 70 AC_MSG_CHECKING([whether $PYTHON version >= $1]) 71 AM_PYTHON_CHECK_VERSION([$PYTHON], [$1], 72 [AC_MSG_RESULT(yes)], 73 [AC_MSG_ERROR(too old)]) 74 am_display_PYTHON=$PYTHON 75 else 76 # Otherwise, try each interpreter until we find one that satisfies 77 # VERSION. 78 AC_CACHE_CHECK([for a Python interpreter with version >= $1], 79 [am_cv_pathless_PYTHON],[ 80 for am_cv_pathless_PYTHON in _AM_PYTHON_INTERPRETER_LIST none; do 81 test "$am_cv_pathless_PYTHON" = none && break 82 AM_PYTHON_CHECK_VERSION([$am_cv_pathless_PYTHON], [$1], [break]) 83 done]) 84 # Set $PYTHON to the absolute path of $am_cv_pathless_PYTHON. 85 if test "$am_cv_pathless_PYTHON" = none; then 86 PYTHON=: 87 else 88 AC_PATH_PROG([PYTHON], [$am_cv_pathless_PYTHON]) 89 fi 90 am_display_PYTHON=$am_cv_pathless_PYTHON 91 fi 92 ]) 93 94 if test "$PYTHON" = :; then 95 dnl Run any user-specified action, or abort. 96 m4_default([$3], [AC_MSG_ERROR([no suitable Python interpreter found])]) 97 else 98 99 dnl Query Python for its version number. Getting [:3] seems to be 100 dnl the best way to do this; it's what "site.py" does in the standard 101 dnl library. 102 103 AC_CACHE_CHECK([for $am_display_PYTHON version], [am_cv_python_version], 104 [am_cv_python_version=`$PYTHON -c "import sys; print sys.version[[:3]]"`]) 105 AC_SUBST([PYTHON_VERSION], [$am_cv_python_version]) 106 107 dnl Use the values of $prefix and $exec_prefix for the corresponding 108 dnl values of PYTHON_PREFIX and PYTHON_EXEC_PREFIX. These are made 109 dnl distinct variables so they can be overridden if need be. However, 110 dnl general consensus is that you shouldn't need this ability. 111 112 AC_SUBST([PYTHON_PREFIX], ['${prefix}']) 113 AC_SUBST([PYTHON_EXEC_PREFIX], ['${exec_prefix}']) 114 115 dnl At times (like when building shared libraries) you may want 116 dnl to know which OS platform Python thinks this is. 117 118 AC_CACHE_CHECK([for $am_display_PYTHON platform], [am_cv_python_platform], 119 [am_cv_python_platform=`$PYTHON -c "import sys; print sys.platform"`]) 120 AC_SUBST([PYTHON_PLATFORM], [$am_cv_python_platform]) 121 122 123 dnl Set up 4 directories: 124 125 dnl pythondir -- where to install python scripts. This is the 126 dnl site-packages directory, not the python standard library 127 dnl directory like in previous automake betas. This behavior 128 dnl is more consistent with lispdir.m4 for example. 129 dnl Query distutils for this directory. distutils does not exist in 130 dnl Python 1.5, so we fall back to the hardcoded directory if it 131 dnl doesn't work. 132 AC_CACHE_CHECK([for $am_display_PYTHON script directory], 133 [am_cv_python_pythondir], 134 [am_cv_python_pythondir=`$PYTHON -c "from distutils import sysconfig; print sysconfig.get_python_lib(0,0,prefix='$PYTHON_PREFIX')" 2>/dev/null || 135 echo "$PYTHON_PREFIX/lib/python$PYTHON_VERSION/site-packages"`]) 136 AC_SUBST([pythondir], [$am_cv_python_pythondir]) 137 138 dnl pkgpythondir -- $PACKAGE directory under pythondir. Was 139 dnl PYTHON_SITE_PACKAGE in previous betas, but this naming is 140 dnl more consistent with the rest of automake. 141 142 AC_SUBST([pkgpythondir], [\${pythondir}/$PACKAGE]) 143 144 dnl pyexecdir -- directory for installing python extension modules 145 dnl (shared libraries) 146 dnl Query distutils for this directory. distutils does not exist in 147 dnl Python 1.5, so we fall back to the hardcoded directory if it 148 dnl doesn't work. 149 AC_CACHE_CHECK([for $am_display_PYTHON extension module directory], 150 [am_cv_python_pyexecdir], 151 [am_cv_python_pyexecdir=`$PYTHON -c "from distutils import sysconfig; print sysconfig.get_python_lib(1,0,prefix='$PYTHON_EXEC_PREFIX')" 2>/dev/null || 152 echo "${PYTHON_EXEC_PREFIX}/lib/python${PYTHON_VERSION}/site-packages"`]) 153 AC_SUBST([pyexecdir], [$am_cv_python_pyexecdir]) 154 155 dnl pkgpyexecdir -- $(pyexecdir)/$(PACKAGE) 156 157 AC_SUBST([pkgpyexecdir], [\${pyexecdir}/$PACKAGE]) 158 159 dnl Run any user-specified action. 160 $2 161 fi 162 163 ]) 164 165 166 # AM_PYTHON_CHECK_VERSION(PROG, VERSION, [ACTION-IF-TRUE], [ACTION-IF-FALSE]) 167 # --------------------------------------------------------------------------- 168 # Run ACTION-IF-TRUE if the Python interpreter PROG has version >= VERSION. 169 # Run ACTION-IF-FALSE otherwise. 170 # This test uses sys.hexversion instead of the string equivalent (first 171 # word of sys.version), in order to cope with versions such as 2.2c1. 172 # hexversion has been introduced in Python 1.5.2; it's probably not 173 # worth to support older versions (1.5.1 was released on October 31, 1998). 174 AC_DEFUN([AM_PYTHON_CHECK_VERSION], 175 [prog="import sys, string 176 # split strings by '.' and convert to numeric. Append some zeros 177 # because we need at least 4 digits for the hex conversion. 178 minver = map(int, string.split('$2', '.')) + [[0, 0, 0]] 179 minverhex = 0 180 for i in xrange(0, 4): minverhex = (minverhex << 8) + minver[[i]] 181 sys.exit(sys.hexversion < minverhex)" 182 AS_IF([AM_RUN_LOG([$1 -c "$prog"])], [$3], [$4])])