icinga2/m4/ax_python_embed.m4

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# ===========================================================================
# http://www.gnu.org/software/autoconf-archive/ax_python_embed.html
# ===========================================================================
#
# SYNOPSIS
#
# AX_PYTHON_DEFAULT
# AX_PYTHON_ENABLE
# AX_PYTHON_WITH
# AX_PYTHON_PATH
# AX_PYTHON_VERSION_ENSURE( [2.2] )
# AX_PYTHON_CSPEC
# AX_PYTHON_LSPEC
#
# DESCRIPTION
#
# This file provides autoconf support for those applications that want to
# embed python. It supports all pythons >= 2.2 which is the first official
# release containing distutils. Version 2.2 of python was released
# December 21, 2001. Since it actually executes the python, cross platform
# configuration will probably not work. Also, most of the platforms
# supported are consistent until you look into Mac OS X. The python
# included with it is installed as a framework which is a very different
# environment to set up the normal tools such as gcc and libtool to deal
# with. Therefore, once we establish which python that we are going to
# use, we use its distutils to actually compile and link our modules or
# applications.
#
# At this time, it does NOT support linking with Python statically. It
# does support dynamic linking.
#
# This set of macros help define $PYTHON, $PYTHON_USE, $PYTHON_CSPEC and
# $PYTHON_LSPEC. $PYTHON defines the full executable path for the Python
# being linked to and is used within these macros to determine if that has
# been specified or found. These macros do execute this python version so
# it must be present on the system at configure time.
#
# $PYTHON_USE is an automake variable that defines whether Python support
# should be included or not in your application. $PYTHON_CSPEC is a
# variable that supplies additional CFLAGS for the compilation of the
# application/shared library. $PYTHON_LSPEC is a variable that supplies
# additional LDFLAGS for linking the application/shared library.
#
# The following is an example of how to set up for python usage within
# your application in your configure.in:
#
# AX_PYTHON_DEFAULT( )
# AX_PYTHON_ENABLE( ) # Optional
# AX_PYTHON_WITH( ) # Optional
# AX_PYTHON_PATH( ) # or AX_PYTHON_INSIST( )
# # if $PYTHON is not defined, then the following do nothing.
# AX_PYTHON_VERSION_ENSURE( [2.2] )
# AX_PYTHON_CSPEC
# AX_PYTHON_LSPEC
#
# The AX_PYTHON_DEFAULT sets the $PYTHON_USE to false. Thereby, excluding
# it if it was optional.
#
# The AX_PYTHON_ENABLE looks for the optional configure parameters of
# --enable-python/--disable-python and establishes the $PYTHON and
# $PYTHON_USE variables accordingly.
#
# The AX_PYTHON_WITH looks for the optional configure parameters of
# --with-python/--without-python and establishes the $PYTHON and
# $PYTHON_USE variables accordingly.
#
# The AX_PYTHON_PATH looks for python assuming that none has been
# previously found or defined and issues an error if it does not find it.
# If it does find it, it establishes the $PYTHON and $PYTHON_USE variables
# accordingly. AX_PYTHON_INSIST could be used here instead if you want to
# insist that Python support be included using the --enable-python or
# --with-python checks previously done.
#
# The AX_PYTHON_VERSION_ENSURE issues an error if the Python previously
# found is not of version 2.2 or greater.
#
# Once that these macros have be run, we can use PYTHON_USE within the
# makefile.am file to conditionally add the Python support such as:
#
# Makefile.am example showing optional inclusion of directories:
#
# if PYTHON_USE
# plugins = plugins
# src = src
# else
# plugins =
# src =
# endif
#
# SUBDIRS = . $(plugins) $(src)
#
# Makefile.am example showing optional shared library build:
#
# if PYTHON_USE
# lib_LTLIBRARIES = libElemList.la
# libElemList_la_SOURCES = libElemList.c
# libElemList_la_CFLAGS = @PYTHON_CSPEC@
# libElemList_la_LDFLAGS = @PYTHON_LSPEC@
# endif
#
# Makefile.am example showing optional program build:
#
# if PYTHON_USE
# bin_PROGRAMS = runFunc
# runFunc_SOURCES = runFunc.c
# runFunc_CFLAGS = @PYTHON_CSPEC@
# runFunc_LDFLAGS = @PYTHON_LSPEC@
# endif
#
# The above compiles the modules only if PYTHON_USE was specified as true.
# Also, the else portion of the if was optional.
#
# LICENSE
#
# Copyright (c) 2008 Robert White <kranki@mac.com>
# Copyright (c) 2008 Dustin J. Mitchell <dustin@cs.uchicago.edu>
#
# Copying and distribution of this file, with or without modification, are
# permitted in any medium without royalty provided the copyright notice
# and this notice are preserved. This file is offered as-is, without any
# warranty.
#serial 8
# AX_PYTHON_DEFAULT( )
# -----------------
# Sets the default to not include Python support.
AC_DEFUN([AX_PYTHON_DEFAULT],
[
ax_python_use=false
AM_CONDITIONAL(PYTHON_USE, test x"$ax_python_use" = x"true")
])
# AX_PYTHON_ENABLE( [path] )
# -----------------------------------------------------------------
# Handles the various --enable-python commands.
# Input:
# $1 is the optional search path for the python executable if needed
# Ouput:
# PYTHON_USE (AM_CONDITIONAL) is true if python executable found
# and --enable-python was requested; otherwise false.
# $PYTHON contains the full executable path to python if PYTHON_ENABLE_USE
# is true.
#
# Example:
# AX_PYTHON_ENABLE( )
# or
# AX_PYTHON_ENABLE( "/usr/bin" )
AC_DEFUN([AX_PYTHON_ENABLE],
[
AC_ARG_VAR([PYTHON],[Python Executable Path])
# unless PYTHON was supplied to us (as a precious variable),
# see if --enable-python[=PythonExecutablePath], --enable-python,
# --disable-python or --enable-python=no was given.
if test -z "$PYTHON"
then
AC_MSG_CHECKING(for --enable-python)
AC_ARG_ENABLE(
python,
AS_HELP_STRING([--enable-python@<:@=PYTHON@:>@],
[absolute path name of Python executable]
),
[
if test "$enableval" = "yes"
then
# "yes" was specified, but we don't have a path
# for the executable.
# So, let's searth the PATH Environment Variable.
AC_MSG_RESULT(yes)
AC_PATH_PROG(
[PYTHON],
python,
[],
$1
)
if test -z "$PYTHON"
then
AC_MSG_ERROR(no path to python found)
fi
ax_python_use=true
AM_CONDITIONAL(PYTHON_USE, test x"$ax_python_use" = x"true")
AX_PYTHON_PREFIX( )
elif test "$enableval" = "no"
then
AC_MSG_RESULT(no)
ax_python_use=false
AM_CONDITIONAL(PYTHON_USE, test x"$ax_python_use" = x"true")
else
# $enableval must be the executable path then.
AC_SUBST([PYTHON], ["${enableval}"])
AC_MSG_RESULT($withval)
ax_python_use=true
AM_CONDITIONAL(PYTHON_USE, test x"$ax_python_use" = x"true")
AX_PYTHON_PREFIX( )
fi
],
[
# --with-python was not specified.
AC_MSG_RESULT(no)
ax_python_use=false
AM_CONDITIONAL(PYTHON_USE, test x"$ax_python_use" = x"true")
]
)
fi
])
# AX_PYTHON_CSPEC( )
# -----------------
# Set up the c compiler options to compile Python
# embedded programs/libraries in $PYTHON_CSPEC if
# $PYTHON has been defined.
AC_DEFUN([AX_PYTHON_CSPEC],
[
AC_ARG_VAR( [PYTHON], [Python Executable Path] )
if test -n "$PYTHON"
then
ax_python_prefix=`${PYTHON} -c "import sys; print sys.prefix"`
if test -z "$ax_python_prefix"
then
AC_MSG_ERROR([Python Prefix is not known])
fi
ax_python_execprefix=`${PYTHON} -c "import sys; print sys.exec_prefix"`
ax_python_version=`$PYTHON -c "import sys; print sys.version[[:3]]"`
ax_python_includespec="-I${ax_python_prefix}/include/python${ax_python_version}"
if test x"$python_prefix" != x"$python_execprefix"; then
ax_python_execspec="-I${ax_python_execprefix}/include/python${ax_python_version}"
ax_python_includespec="${ax_python_includespec} $ax_python_execspec"
fi
ax_python_ccshared=`${PYTHON} -c "import distutils.sysconfig; print distutils.sysconfig.get_config_var('CFLAGSFORSHARED')"`
ax_python_cspec="${ax_python_ccshared} ${ax_python_includespec}"
AC_SUBST([PYTHON_CSPEC], [${ax_python_cspec}])
AC_MSG_NOTICE([PYTHON_CSPEC=${ax_python_cspec}])
fi
])
# AX_PYTHON_INSIST( )
# -----------------
# Look for Python and set the output variable 'PYTHON'
# to 'python' if found, empty otherwise.
AC_DEFUN([AX_PYTHON_INSIST],
[
AC_ARG_VAR( [PYTHON], [Python Executable Path] )
if test -z "$PYTHON"
then
AC_MSG_ERROR([Python Executable not found])
fi
])
# AX_PYTHON_LSPEC( )
# -----------------
# Set up the linker options to link Python embedded
# programs/libraries in $PYTHON_LSPEC if $PYTHON
# has been defined.
AC_DEFUN([AX_PYTHON_LSPEC],
[
AC_ARG_VAR( [PYTHON], [Python Executable Path] )
if test -n "$PYTHON"
then
AX_PYTHON_RUN([
import sys
import distutils.sysconfig
strUseFrameWork = "--enable-framework"
dictConfig = distutils.sysconfig.get_config_vars( )
strConfigArgs = dictConfig.get("CONFIG_ARGS")
strLinkSpec = dictConfig.get('LDFLAGS')
if -1 == strConfigArgs.find(strUseFrameWork):
strLibPL = dictConfig.get("LIBPL")
if strLibPL and (strLibPL != ""):
strLinkSpec += " -L%s" % (strLibPL)
strSys = dictConfig.get("SYSLIBS")
if strSys and (strSys != ""):
strLinkSpec += " %s" % (strSys)
strSHL = dictConfig.get("SHLIBS")
if strSHL and (strSHL != ""):
strLinkSpec += " %s" % (strSHL)
# Construct the Python Library Name.
strTmplte = " -lpython%d.%d"
if (sys.platform == "win32") or (sys.platform == "os2emx"):
strTmplte = " -lpython%d%d"
strWrk = strTmplte % ( (sys.hexversion >> 24),
((sys.hexversion >> 16) & 0xff))
strLinkSpec += strWrk
else:
# This is not ideal since it changes the search path
# for Frameworks which could have side-effects on
# other included Frameworks. However, it is necessary
# where someone has installed more than one frameworked
# Python. Frameworks are really only used in MacOSX.
strLibFW = dictConfig.get("PYTHONFRAMEWORKPREFIX")
if strLibFW and (strLibFW != ""):
strLinkSpec += " -F%s" % (strLibFW)
strLinkSpec += " %s" % (dictConfig.get('LINKFORSHARED'))
print strLinkSpec
])
AC_SUBST([PYTHON_LSPEC], [${ax_python_output}])
AC_MSG_NOTICE([PYTHON_LSPEC=${ax_python_output}])
fi
])
# AX_PYTHON_PATH( )
# -----------------
# Look for Python and set the output variable 'PYTHON'
# to 'python' if found, empty otherwise.
AC_DEFUN([AX_PYTHON_PATH],
[
AC_ARG_VAR( [PYTHON], [Python Executable Path] )
AC_PATH_PROG( PYTHON, python, [], $1 )
if test -z "$PYTHON"
then
AC_MSG_ERROR([Python Executable not found])
else
ax_python_use=true
fi
AM_CONDITIONAL(PYTHON_USE, test "$ax_python_use" = "true")
])
# AX_PYTHON_PREFIX( )
# -------------------
# Use the values of $prefix and $exec_prefix for the corresponding
# values of PYTHON_PREFIX and PYTHON_EXEC_PREFIX.
AC_DEFUN([AX_PYTHON_PREFIX],
[
if test -z "$PYTHON"
then
AC_MSG_ERROR([Python Executable Path is not known])
fi
ax_python_prefix=`${PYTHON} -c "import sys; print sys.prefix"`
ax_python_execprefix=`${PYTHON} -c "import sys; print sys.exec_prefix"`
AC_SUBST([PYTHON_PREFIX], ["${ax_python_prefix}"])
AC_SUBST([PYTHON_EXECPREFIX], ["${ax_python_execprefix}"])
])
# AX_PYTHON_RUN( PYTHON_PROGRAM )
# -----------------
# Run a Python Test Program saving its output
# in ax_python_output and its condition code
# in ax_python_cc.
AC_DEFUN([AX_PYTHON_RUN],
[
AC_ARG_VAR( [PYTHON], [Python Executable Path] )
if test -z "$PYTHON"
then
AC_MSG_ERROR([Python Executable not found])
else
cat >conftest.py <<_ACEOF
$1
_ACEOF
ax_python_output=`$PYTHON conftest.py`
ax_python_cc=$?
rm conftest.py
if test -f "conftest.pyc"
then
rm conftest.pyc
fi
fi
])
# AX_PYTHON_VERSION_CHECK( VERSION, [ACTION-IF-TRUE], [ACTION-IF-FALSE] )
# -----------------------------------------------------------------------------
# Run ACTION-IF-TRUE if the Python interpreter has version >= VERSION.
# Run ACTION-IF-FALSE otherwise.
# This test uses sys.hexversion instead of the string equivalant (first
# word of sys.version), in order to cope with versions such as 2.2c1.
# hexversion has been introduced in Python 1.5.2; it's probably not
# worth to support older versions (1.5.1 was released on October 31, 1998).
AC_DEFUN([AX_PYTHON_VERSION_CHECK],
[
AC_ARG_VAR( [PYTHON], [Python Executable Path] )
if test -n "$PYTHON"
then
AC_MSG_CHECKING([whether $PYTHON version >= $1])
AX_PYTHON_RUN([
import sys, string
# split strings by '.' and convert to numeric. Append some zeros
# because we need at least 4 digits for the hex conversion.
minver = map(int, string.split('$1', '.')) + [[0, 0, 0]]
minverhex = 0
for i in xrange(0, 4): minverhex = (minverhex << 8) + minver[[i]]
if sys.hexversion >= minverhex:
sys.exit( 0 )
else:
sys.exit( 1 )
])
if test $ax_python_cc -eq 0
then
$2
m4_ifvaln(
[$3],
[else $3]
)
fi
fi
])
# AX_PYTHON_VERSION_ENSURE( VERSION )
# -----------------
# Insure that the Python Interpreter Version
# is greater than or equal to the VERSION
# parameter.
AC_DEFUN([AX_PYTHON_VERSION_ENSURE],
[
AX_PYTHON_VERSION_CHECK(
[$1],
[AC_MSG_RESULT(yes)],
[AC_MSG_ERROR(too old)]
)
])
# AX_PYTHON_WITH( [path] )
# -----------------------------------------------------------------
# Handles the various --with-python commands.
# Input:
# $1 is the optional search path for the python executable if needed
# Ouput:
# PYTHON_USE (AM_CONDITIONAL) is true if python executable found
# and --with-python was requested; otherwise false.
# $PYTHON contains the full executable path to python if PYTHON_USE
# is true.
#
# Example:
# AX_PYTHON_WITH( )
# or
# AX_PYTHON_WITH("/usr/bin")
AC_DEFUN([AX_PYTHON_WITH],
[
AC_ARG_VAR([PYTHON],[Python Executable Path])
# unless PYTHON was supplied to us (as a precious variable),
# see if --with-python[=PythonExecutablePath], --with-python,
# --without-python or --with-python=no was given.
if test -z "$PYTHON"
then
AC_MSG_CHECKING(for --with-python)
AC_ARG_WITH(
python,
AS_HELP_STRING([--with-python@<:@=PYTHON@:>@],
[absolute path name of Python executable]
),
[
if test "$withval" = "yes"
then
# "yes" was specified, but we don't have a path
# for the executable.
# So, let's searth the PATH Environment Variable.
AC_MSG_RESULT(yes)
AC_PATH_PROG(
[PYTHON],
python,
[],
$1
)
if test -z "$PYTHON"
then
AC_MSG_ERROR(no path to python found)
fi
ax_python_use=true
AM_CONDITIONAL(PYTHON_USE, test x"$ax_python_use" = x"true")
AX_PYTHON_PREFIX( )
elif test "$withval" = "no"
then
AC_MSG_RESULT(no)
ax_python_use=false
AM_CONDITIONAL(PYTHON_USE, test x"$ax_python_use" = x"true")
else
# $withval must be the executable path then.
AC_SUBST([PYTHON], ["${withval}"])
AC_MSG_RESULT($withval)
ax_python_use=true
AM_CONDITIONAL(PYTHON_USE, test x"$ax_python_use" = x"true")
AX_PYTHON_PREFIX( )
fi
],
[
# --with-python was not specified.
AC_MSG_RESULT(no)
ax_python_use=false
AM_CONDITIONAL(PYTHON_USE, test x"$ax_python_use" = x"true")
]
)
fi
])