dnl @synopsis AC_PYTHON_MODULE(modname[, fatal])
dnl
dnl Checks for Python module.
dnl
dnl If fatal is non-empty then absence of a module will trigger an
dnl error.
dnl
dnl @category InstalledPackages
dnl @author Andrew Collier <colliera@nu.ac.za>.
dnl @version 2004-07-14
dnl @license AllPermissive

AC_DEFUN([AC_PYTHON_MODULE],[
	AC_MSG_CHECKING(python module: $1)
	$PYTHON -c "import $1" 2>/dev/null
	if test $? -eq 0;
	then
		AC_MSG_RESULT(yes)
		eval AS_TR_CPP(HAVE_PYMOD_$1)=yes
	else
		AC_MSG_RESULT(no)
		eval AS_TR_CPP(HAVE_PYMOD_$1)=no
		#
		if test -n "$2"
		then
			AC_MSG_ERROR(failed to find required module $1)
			exit 1
		fi
	fi
])