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-dnl as-python.m4 0.1.0
-dnl autostars m4 macro for python checks
-
-dnl From Andrew Dalke
-dnl Updated by James Henstridge
-dnl Updated by Andy Wingo to loop through possible pythons
-dnl Updated by Thomas Vander Stichele to check for presence of packages/modules
-
-dnl $Id: as-python.m4,v 1.1 2006-09-25 07:45:20 iovar Exp $
-
-# AS_PATH_PYTHON([MINIMUM-VERSION])
-
-# Adds support for distributing Python modules and packages. To
-# install modules, copy them to $(pythondir), using the python_PYTHON
-# automake variable. To install a package with the same name as the
-# automake package, install to $(pkgpythondir), or use the
-# pkgpython_PYTHON automake variable.
-
-# The variables $(pyexecdir) and $(pkgpyexecdir) are provided as
-# locations to install python extension modules (shared libraries).
-# Another macro is required to find the appropriate flags to compile
-# extension modules.
-
-# If your package is configured with a different prefix to python,
-# users will have to add the install directory to the PYTHONPATH
-# environment variable, or create a .pth file (see the python
-# documentation for details).
-
-# If the MINIMUM-VERSION argument is passed, AS_PATH_PYTHON will
-# cause an error if the version of python installed on the system
-# doesn't meet the requirement. MINIMUM-VERSION should consist of
-# numbers and dots only.
-
-# Updated to loop over all possible python binaries by Andy Wingo
-# <wingo@pobox.com>
-
-AC_DEFUN([AS_PATH_PYTHON],
- [
- dnl Find a version of Python. I could check for python versions 1.4
- dnl or earlier, but the default installation locations changed from
- dnl $prefix/lib/site-python in 1.4 to $prefix/lib/python1.5/site-packages
- dnl in 1.5, and I don't want to maintain that logic.
-
- dnl should we do the version check?
- ifelse([$1],[],
- [AC_PATH_PROG(PYTHON, python python2.1 python2.0 python1.6 python1.5)],
- [
- AC_MSG_NOTICE(Looking for Python version >= $1)
- changequote(<<, >>)dnl
- prog="
-import sys, string
-minver = '$1'
-pyver = string.split(sys.version)[0] # first word is version string
-# split strings by '.'. just compare textually to allow for versions like
-# 2.4.1a0
-minver = string.split(minver, '.')
-pyver = string.split(pyver, '.')
-# we can now do comparisons on the two lists:
-if pyver >= minver:
- sys.exit(0)
-else:
- sys.exit(1)"
- changequote([, ])dnl
-
- python_good=false
- for python_candidate in python python2.2 python2.1 python2.0 python2 python1.6 python1.5; do
- unset PYTHON
- AC_PATH_PROG(PYTHON, $python_candidate) 1> /dev/null 2> /dev/null
-
- if test "x$PYTHON" = "x"; then continue; fi
-
- if $PYTHON -c "$prog" 1>&AC_FD_CC 2>&AC_FD_CC; then
- AC_MSG_CHECKING(["$PYTHON":])
- AC_MSG_RESULT([okay])
- python_good=true
- break;
- else
- dnl clear the cache val
- unset ac_cv_path_PYTHON
- fi
- done
- ])
-
- if test "$python_good" != "true"; then
- AC_MSG_ERROR([No suitable version of python found])
- fi
-
- AC_MSG_CHECKING([local Python configuration])
-
- dnl Query Python for its version number. Getting [:3] seems to be
- dnl the best way to do this; it's what "site.py" does in the standard
- dnl library. Need to change quote character because of [:3]
-
- AC_SUBST(PYTHON_VERSION)
- changequote(<<, >>)dnl
- PYTHON_VERSION=`$PYTHON -c "import sys; print sys.version[:3]"`
- changequote([, ])dnl
-
-
- dnl Use the values of $prefix and $exec_prefix for the corresponding
- dnl values of PYTHON_PREFIX and PYTHON_EXEC_PREFIX. These are made
- dnl distinct variables so they can be overridden if need be. However,
- dnl general consensus is that you shouldn't need this ability.
-
- AC_SUBST(PYTHON_PREFIX)
- PYTHON_PREFIX='${prefix}'
-
- AC_SUBST(PYTHON_EXEC_PREFIX)
- PYTHON_EXEC_PREFIX='${exec_prefix}'
-
- dnl At times (like when building shared libraries) you may want
- dnl to know which OS platform Python thinks this is.
-
- AC_SUBST(PYTHON_PLATFORM)
- PYTHON_PLATFORM=`$PYTHON -c "import sys; print sys.platform"`
-
-
- dnl Set up 4 directories:
-
- dnl pythondir -- where to install python scripts. This is the
- dnl site-packages directory, not the python standard library
- dnl directory like in previous automake betas. This behaviour
- dnl is more consistent with lispdir.m4 for example.
- dnl
- dnl Also, if the package prefix isn't the same as python's prefix,
- dnl then the old $(pythondir) was pretty useless.
-
- AC_SUBST(pythondir)
- pythondir=$PYTHON_PREFIX"/lib/python"$PYTHON_VERSION/site-packages
-
- dnl pkgpythondir -- $PACKAGE directory under pythondir. Was
- dnl PYTHON_SITE_PACKAGE in previous betas, but this naming is
- dnl more consistent with the rest of automake.
- dnl Maybe this should be put in python.am?
-
- AC_SUBST(pkgpythondir)
- pkgpythondir=\${pythondir}/$PACKAGE
-
- dnl pyexecdir -- directory for installing python extension modules
- dnl (shared libraries) Was PYTHON_SITE_EXEC in previous betas.
-
- AC_SUBST(pyexecdir)
- pyexecdir=$PYTHON_EXEC_PREFIX"/lib/python"$PYTHON_VERSION/site-packages
-
- dnl pkgpyexecdir -- $(pyexecdir)/$(PACKAGE)
- dnl Maybe this should be put in python.am?
-
- AC_SUBST(pkgpyexecdir)
- pkgpyexecdir=\${pyexecdir}/$PACKAGE
-
- AC_MSG_RESULT([looks good])
-])
-
-dnl AS_PYTHON_IMPORT(PACKAGE/MODULE, [ACTION-IF-FOUND, [ACTION-IF-NOT-FOUND, [PREAMBLE, [POSTAMBLE]]]])
-dnl Try to import the given PACKAGE/MODULE
-
-AC_DEFUN([AS_PYTHON_IMPORT],
-[
- dnl Check if we can import a given module.
- dnl Requires AS_PATH_PYTHON to be called before.
-
- AC_MSG_CHECKING([for python module $1])
-
- prog="
-import sys
-
-try:
- $4
- import $1
- $5
- sys.exit(0)
-except ImportError:
- sys.exit(1)
-except SystemExit:
- raise
-except Exception, e:
- print ' Error while trying to import $1:'
- print ' %r: %s' % (e, e)
- sys.exit(1)"
-
-if $PYTHON -c "$prog" 1>&AC_FD_CC 2>&AC_FD_CC
-then
- AC_MSG_RESULT(found)
- ifelse([$2], , :, [$2])
-else
- AC_MSG_RESULT(not found)
- ifelse([$3], , :, [$3])
-fi
-])
-
-dnl a macro to check for ability to create python extensions
-dnl AM_CHECK_PYTHON_HEADERS([ACTION-IF-POSSIBLE], [ACTION-IF-NOT-POSSIBLE])
-dnl function also defines PYTHON_INCLUDES
-AC_DEFUN([AM_CHECK_PYTHON_HEADERS],
- [
- AC_REQUIRE([AM_PATH_PYTHON])
- AC_MSG_CHECKING(for headers required to compile python extensions)
-
- dnl deduce PYTHON_INCLUDES
- py_prefix=`$PYTHON -c "import sys; print sys.prefix"`
- py_exec_prefix=`$PYTHON -c "import sys; print sys.exec_prefix"`
- PYTHON_INCLUDES="-I${py_prefix}/include/python${PYTHON_VERSION}"
-
- if test "$py_prefix" != "$py_exec_prefix"; then
- PYTHON_INCLUDES="$PYTHON_INCLUDES -I${py_exec_prefix}/include/python${PYTHON_VERSION}"
- fi
- AC_SUBST(PYTHON_INCLUDES)
-
- dnl check if the headers exist:
- save_CPPFLAGS="$CPPFLAGS"
- CPPFLAGS="$CPPFLAGS $PYTHON_INCLUDES"
-AC_TRY_CPP([#include <Python.h>],dnl
-[AC_MSG_RESULT(found)
-$1],dnl
-[AC_MSG_RESULT(not found)
-$2])
-CPPFLAGS="$save_CPPFLAGS"
-])
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