-## this one is commonly used with AM_PATH_PYTHONDIR ...

-dnl AM_CHECK_PYMOD(MODNAME [,SYMBOL [,ACTION-IF-FOUND [,ACTION-IF-NOT-FOUND]]])

-dnl Check if a module containing a given symbol is visible to python.

-AC_DEFUN([AM_CHECK_PYMOD],

-[AC_REQUIRE([AM_PATH_PYTHON])

-py_mod_var=`echo $1['_']$2 | sed 'y%./+-%__p_%'`

-AC_MSG_CHECKING(for ifelse([$2],[],,[$2 in ])python module $1)

-AC_CACHE_VAL(py_cv_mod_$py_mod_var, [

-ifelse([$2],[], [prog="

-import sys

-try:

- import $1

-except ImportError:

- sys.exit(1)

-except:

- sys.exit(0)

-sys.exit(0)"], [prog="

-import $1

-$1.$2"])

-if $PYTHON -c "$prog" 1>&AC_FD_CC 2>&AC_FD_CC

- then

- eval "py_cv_mod_$py_mod_var=yes"

- else

- eval "py_cv_mod_$py_mod_var=no"

- fi

-])

-py_val=`eval "echo \`echo '$py_cv_mod_'$py_mod_var\`"`

-if test "x$py_val" != xno; then

- AC_MSG_RESULT(yes)

- ifelse([$3], [],, [$3

-])dnl

-else

- AC_MSG_RESULT(no)

- ifelse([$4], [],, [$4

-])dnl

-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=`python-config --includes`

-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"

-])

-

-# The AC_MULTILIB macro was extracted and modified from

-# gettext-0.15's AC_LIB_PREPARE_MULTILIB macro in the lib-prefix.m4 file

-# so that the correct paths can be used for 64-bit libraries.

-#

-dnl Copyright (C) 2001-2005 Free Software Foundation, Inc.

-dnl This file is free software; the Free Software Foundation

-dnl gives unlimited permission to copy and/or distribute it,

-dnl with or without modifications, as long as this notice is preserved.

-dnl From Bruno Haible.

-

-dnl AC_MULTILIB creates a variable libdirsuffix, containing

-dnl the suffix of the libdir, either "" or "64".

-dnl Only do this if the given enable parameter is "yes".

-AC_DEFUN([AC_MULTILIB],

-[

- dnl There is no formal standard regarding lib and lib64. The current

- dnl practice is that on a system supporting 32-bit and 64-bit instruction

- dnl sets or ABIs, 64-bit libraries go under $prefix/lib64 and 32-bit

- dnl libraries go under $prefix/lib. We determine the compiler's default

- dnl mode by looking at the compiler's library search path. If at least

- dnl of its elements ends in /lib64 or points to a directory whose absolute

- dnl pathname ends in /lib64, we assume a 64-bit ABI. Otherwise we use the

- dnl default, namely "lib".

- enable_lib64="$1"

- libdirsuffix="/i386-linux-gnu/"

- searchpath=`(LC_ALL=C $CC -print-search-dirs) 2>/dev/null | sed -n -e 's,^libraries: ,,p' | sed -e 's,^=,,'`

- if test "$enable_lib64" = "yes" -a -n "$searchpath"; then

- save_IFS="${IFS= }"; IFS=":"

- for searchdir in $searchpath; do

- if test -d "$searchdir"; then

- case "$searchdir" in

- */lib64/ | */lib64 ) libdirsuffix=64 ;;

- /lib/x86_64-linux-gnu/ | /lib/x86_64-linux-gnu ) libdirsuffix=/x86_64-linux-gnu ;;

- *) searchdir=`cd "$searchdir" && pwd`

- case "$searchdir" in

- */lib64 ) libdirsuffix=64 ;;

- /lib/x86_64-linux-gnu ) libdirsuffix=/x86_64-linux-gnu ;;

- esac ;;

- esac

- fi

- done

- IFS="$save_IFS"

- fi

- AC_SUBST(libdirsuffix)

-])

-

-dnl a macro to check for ability to embed python

-dnl AM_CHECK_PYTHON_LIBS([ACTION-IF-POSSIBLE], [ACTION-IF-NOT-POSSIBLE])

-dnl function also defines PYTHON_LIBS

-AC_DEFUN([AM_CHECK_PYTHON_LIBS],

-[AC_REQUIRE([AM_CHECK_PYTHON_HEADERS])

-AC_MSG_CHECKING(for libraries required to embed python)

-dnl deduce PYTHON_LIBS

-py_exec_prefix=`$PYTHON -c "import sys; print(sys.exec_prefix)"`

-AC_MULTILIB(yes)

-

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

- PYTHON_LIBS="-L${py_prefix}/lib${libdirsuffix} -lpython${PYTHON_VERSION}"

-fi

-

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

- PYTHON_LIB_LOC="${py_prefix}/lib${libdirsuffix}"

-fi

-AC_SUBST(PYTHON_LIBS)

-AC_SUBST(PYTHON_LIB_LOC)

-dnl check if the headers exist:

-save_LIBS="$LIBS"

-LIBS="$LIBS $PYTHON_LIBS"

-AC_TRY_LINK_FUNC(Py_Initialize, dnl

- [LIBS="$save_LIBS"; AC_MSG_RESULT(yes); $1], dnl

- [LIBS="$save_LIBS"; AC_MSG_RESULT(no); $2])

-

-])