- [build python bindings @<:@default=auto@:>@])],

- [enable_deprecations=$enableval],

- [enable_deprecations=auto])

-if test "x$enable_python" = "xno" ; then

- have_python=no

- AC_MSG_NOTICE([Checking to see if we can build Python bindings])

- have_python=no

- AM_PATH_PYTHON(2.3)

-

- if test "x$PYTHON" = "x" ; then

- AC_MSG_WARN([Python not found])

- else

- AM_CHECK_PYTHON_HEADERS(have_python_headers=yes, have_python_headers=no)

- if test "x$have_python_headers" = "xyes" ; then

- have_python=yes

- fi

- fi

-

- if test "x$have_python" = "xno" ; then

- if test "x$enable_python" = "xyes" ; then

- AC_MSG_ERROR([Building python explicitly requested, but can't build python bindings])

- else

- AC_MSG_WARN([Couldn't find the Python headers, not building Python bindings])

- fi

- fi

-# Because of the way Python implements polymorphism, we get the following warning:

-# "warning: dereferencing type-punned pointer will break strict-aliasing rules"

-# -fno-strict-aliasing (as used in Python build) switches warnings off

-NO_STRICT_ALIASING_CFLAGS=""

-if test "x$GCC" = "xyes" ; then

- AC_MSG_CHECKING(whether $CC accepts -fno-strict-aliasing)

- ac_save_cc="$CC"

- CC="$CC -fno-strict-aliasing"

- AC_TRY_RUN([int main() { return 0; }],

- ac_cv_no_strict_aliasing_ok=yes,

- ac_cv_no_strict_aliasing_ok=no,

- ac_cv_no_strict_aliasing_ok=no)

- CC="$ac_save_cc"

- AC_MSG_RESULT($ac_cv_no_strict_aliasing_ok)

- if test "x$ac_cv_no_strict_aliasing_ok" = "xyes" ; then

- NO_STRICT_ALIASING_CFLAGS="-fno-strict-aliasing"

- fi

-fi

-AC_SUBST(NO_STRICT_ALIASING_CFLAGS)

-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_SUBST(PYTHON_INCLUDES)

-AC_SUBST(PYTHON_LIBS)

-AC_SUBST(PYTHON_EMBED_LIBS)

-AC_SUBST(PYTHON_LDFLAGS)

-AC_SUBST(PYTHON_CC)

-

-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"`

-if test -x "$PYTHON-config"; then

- PYTHON_INCLUDES=`$PYTHON-config --includes 2>/dev/null`

-else

- 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

-fi

-dnl check if the headers exist:

-save_CPPFLAGS="$CPPFLAGS"

-CPPFLAGS="$CPPFLAGS $PYTHON_INCLUDES"

-AC_TRY_CPP([#include <Python.h>],dnl

-[AC_MSG_RESULT(found)

-

-AC_MSG_CHECKING(for python libraries)

-

-

-dnl Check whether python was compiled as shared library

-link_pymodules_libpython=false;

-py_enable_shared=`$PYTHON -c "from distutils.sysconfig import get_config_var; print repr(get_config_var('Py_ENABLE_SHARED'))"`

-if test $py_enable_shared = 1 ; then

- if test x`uname -s` != xDarwin; then

- PYTHON_LDFLAGS="-no-undefined"

- link_pymodules_libpython=true;

- fi

-fi

-

-dnl use distutils to get some python configuration variables..

-PYTHON_CC=`$PYTHON -c "from distutils import sysconfig; print sysconfig.get_config_var('CC')"`

-PYTHON_LIB_DEPS=`$PYTHON -c "from distutils import sysconfig; print sysconfig.get_config_var('SYSLIBS'), sysconfig.get_config_var('SHLIBS')"`

-PYTHON_LIBDIR=`$PYTHON -c "from distutils import sysconfig; print sysconfig.get_config_var('LIBDIR')"`

-PYTHON_LIBPL=`$PYTHON -c "from distutils import sysconfig; print sysconfig.get_config_var('LIBPL')"`

-

-save_CC="$CC"

-save_LIBS="$LIBS"

-

-PYTHON_EMBED_LIBS="-L${PYTHON_LIBDIR} ${PYTHON_LIB_DEPS} -lpython${PYTHON_VERSION}"

-

-CC="$PYTHON_CC"

-LIBS="$LIBS $PYTHON_EMBED_LIBS"

-AC_TRY_LINK_FUNC(Py_Initialize, dnl

- [

- LIBS="$save_LIBS";

- if $link_pymodules_libpython; then

- PYTHON_LIBS="$PYTHON_EMBED_LIBS";

- fi

- AC_MSG_RESULT([$PYTHON_EMBED_LIBS]);

- $1], dnl

-[

-

- PYTHON_EMBED_LIBS="-L${PYTHON_LIBPL} ${PYTHON_LIB_DEPS} -lpython${PYTHON_VERSION}"

-

- LIBS="$save_LIBS $PYTHON_EMBED_LIBS";

- AC_TRY_LINK_FUNC(Py_Initialize, dnl

- [

- LIBS="$save_LIBS";

- if $link_pymodules_libpython; then

- PYTHON_LIBS="$PYTHON_EMBED_LIBS";

- fi

- AC_MSG_RESULT([$PYTHON_EMBED_LIBS]);

- $1], dnl

- AC_MSG_RESULT(not found); $2)

-])

-CC="$save_CC"

-

-$1],dnl

-[AC_MSG_RESULT(not found)

-$2])

-CPPFLAGS="$save_CPPFLAGS"

-])

- $(PYTHON_INCLUDES) \