dnl Macros to configure Libksba
dnl Copyright (C) 2001 Free Software Foundation, Inc.
dnl
dnl This file is part of Libksba.
dnl
dnl Libksba is free software; you can redistribute it and/or modify
dnl it under the terms of the GNU General Public License as
dnl published by the Free Software Foundation; either version 2.1 of
dnl the License, or (at your option) any later version.
dnl
dnl Libksba is distributed in the hope that it will be useful,
dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
dnl GNU Lesser General Public License for more details.
dnl
dnl You should have received a copy of the GNU General Public
dnl License along with this program; if not, write to the Free Software
dnl Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA


dnl GNUPG_CHECK_TYPEDEF(TYPE, HAVE_NAME)
dnl Check whether a typedef exists and create a #define $2 if it exists
dnl
AC_DEFUN([GNUPG_CHECK_TYPEDEF],
  [ AC_MSG_CHECKING(for $1 typedef)
    AC_CACHE_VAL(gnupg_cv_typedef_$1,
    [AC_TRY_COMPILE([#define _GNU_SOURCE 1
    #include <stdlib.h>
    #include <sys/types.h>], [
    #undef $1
    int a = sizeof($1);
    ], gnupg_cv_typedef_$1=yes, gnupg_cv_typedef_$1=no )])
    AC_MSG_RESULT($gnupg_cv_typedef_$1)
    if test "$gnupg_cv_typedef_$1" = yes; then
        AC_DEFINE($2,1,[Defined if a `]$1[' is typedef'd])
    fi
  ])