diff options
Diffstat (limited to 'am/ipv6.m4')
| -rw-r--r-- | am/ipv6.m4 | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/am/ipv6.m4 b/am/ipv6.m4 new file mode 100644 index 000000000..2357314b9 --- /dev/null +++ b/am/ipv6.m4 @@ -0,0 +1,56 @@ +dnl This file is part of GNU Mailutils. -*- autoconf -*- +dnl Copyright (C) 2011 Free Software Foundation, Inc. +dnl +dnl GNU Mailutils is free software; you can redistribute it and/or modify +dnl it under the terms of the GNU General Public License as published by +dnl the Free Software Foundation; either version 3 of the License, or +dnl (at your option) any later version. +dnl +dnl GNU Mailutils 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 General Public License for more details. +dnl +dnl You should have received a copy of the GNU General Public License +dnl along with GNU Mailutils. If not, see <http://www.gnu.org/licenses/>. + +AC_DEFUN([MU_ENABLE_IPV6], + [AC_ARG_ENABLE(ipv6, + [AC_HELP_STRING([--enable-ipv6], [enable IPv6 support])], + [status_ipv6=$enableval], + [status_ipv6=maybe]) + + if test $status_ipv6 != no; then + working_ipv6=no + AC_EGREP_CPP(MAILUTILS_AF_INET6_DEFINED,[ +#include <sys/socket.h> +#if defined(AF_INET6) +MAILUTILS_AF_INET6_DEFINED +#endif +],[working_ipv6=yes]) + + AC_CHECK_TYPE([struct sockaddr_storage], + [working_ipv6=yes], [working_ipv6=no], + [#include <sys/socket.h>]) + AC_CHECK_TYPE([struct sockaddr_in6], + [working_ipv6=yes], [working_ipv6=no], + [#include <sys/types.h> + #include <netinet/in.h>]) + AC_CHECK_TYPE([struct addrinfo], + [working_ipv6=yes], [working_ipv6=no], + [#include <netdb.h>]) + AC_CHECK_FUNC([getnameinfo], + [working_ipv6=yes], [working_ipv6=no], + [#include <netdb.h>]) + + if test $working_ipv6 = no; then + if test $status_ipv6 = yes; then + AC_MSG_ERROR([IPv6 support is required but not available]) + fi + fi + status_ipv6=$working_ipv6 + if test $status_ipv6 = yes; then + AC_DEFINE_UNQUOTED([MAILUTILS_IPV6],1, + [Define to 1 if IPv6 support is enabled]) + fi + fi])
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