# ===========================================================================
#            http://www.nongnu.org/autoconf-archive/ax_python.html
# ===========================================================================
#
# SYNOPSIS
#
#   AX_PYTHON
#
# DESCRIPTION
#
#   This macro does a complete Python development environment check.
#
#   It recurses through several python versions (from 2.1 to 2.6 in this
#   version), looking for an executable. When it finds an executable, it
#   looks to find the header files and library.
#
#   It sets PYTHON_BIN to the name of the python executable,
#   PYTHON_INCLUDE_DIR to the directory holding the header files, and
#   PYTHON_LIB to the name of the Python library.
#
#   This macro calls AC_SUBST on PYTHON_BIN (via AC_CHECK_PROG),
#   PYTHON_INCLUDE_DIR and PYTHON_LIB.
#
#   EDIT: 2009.09.05 - Modified by Cristian Greco <cristian.debian@gmail.com>
#   Dirty hack on the for loop in order to avoid problems with caching in
#   AC_CHECK_ARGS, and a special test for ${host} in darwin (MacOS).
#   Note that now the macro calls directly AC_SUBST on PYTHON_BIN.
#
# LICENSE
#
#   Copyright (c) 2008 Michael Tindal
#
#   This program is free software; you can redistribute it and/or modify it
#   under the terms of the GNU General Public License as published by the
#   Free Software Foundation; either version 2 of the License, or (at your
#   option) any later version.
#
#   This program is distributed in the hope that it will be useful, but
#   WITHOUT ANY WARRANTY; without even the implied warranty of
#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
#   Public License for more details.
#
#   You should have received a copy of the GNU General Public License along
#   with this program. If not, see <http://www.gnu.org/licenses/>.
#
#   As a special exception, the respective Autoconf Macro's copyright owner
#   gives unlimited permission to copy, distribute and modify the configure
#   scripts that are the output of Autoconf when processing the Macro. You
#   need not follow the terms of the GNU General Public License when using
#   or distributing such scripts, even though portions of the text of the
#   Macro appear in them. The GNU General Public License (GPL) does govern
#   all other use of the material that constitutes the Autoconf Macro.
#
#   This special exception to the GPL applies to versions of the Autoconf
#   Macro released by the Autoconf Archive. When you make and distribute a
#   modified version of the Autoconf Macro, you may extend this special
#   exception to the GPL to apply to your modified version as well.

AC_DEFUN([AX_PYTHON],
[AC_MSG_CHECKING(for python build information)
AC_MSG_RESULT([])

found="no"
m4_foreach_w([PYVER], [ 2_6 2_5 2_4 ], [
if test "x$found" != "xyes"; then
  python="python`echo PYVER | sed -e 's/_/./'`"
  AC_CHECK_PROGS(PYTHON_BIN_[]PYVER, [$python])
  ax_python_bin=$PYTHON_BIN_[]PYVER
  if test "x$ax_python_bin" != "x"; then
    AC_CHECK_LIB($ax_python_bin, main, ax_python_lib=$ax_python_bin, ax_python_lib=no)

    if test `echo ${host} | grep '.*-darwin.*'`; then
      python_prefix=/System/Library/Frameworks/Python.framework/*/
    fi
    AC_CHECK_HEADER([$ax_python_bin/Python.h],
      [[ax_python_header=`locate $python_prefix$ax_python_bin/Python.h | sed -e s,/Python.h,,`]],
      [ax_python_header="no"])
    if test "x$ax_python_lib" != "xno" -a "x$ax_python_header" != "xno"; then
        found="yes";
    fi
  fi
fi
])

if test "x$ax_python_bin" = "x"; then
   ax_python_bin="no"
fi
if test "x$ax_python_header" = "x"; then
   ax_python_header="no"
fi
if test "x$ax_python_lib" = "x"; then
   ax_python_lib="no"
fi

#AC_MSG_RESULT([  results of the Python check:])
#AC_MSG_RESULT([    Binary:      $ax_python_bin])
#AC_MSG_RESULT([    Library:     $ax_python_lib])
#AC_MSG_RESULT([    Include Dir: $ax_python_header])

if test "x$ax_python_bin" != "xno"; then
  PYTHON_BIN=$ax_python_bin
  AC_SUBST(PYTHON_BIN)
fi
if test "x$ax_python_header" != "xno"; then
  PYTHON_INCLUDE_DIR=$ax_python_header
  AC_SUBST(PYTHON_INCLUDE_DIR)
fi
if test "x$ax_python_lib" != "xno"; then
  PYTHON_LIB=$ax_python_lib
  AC_SUBST(PYTHON_LIB)
fi
])dnl