diff options
Diffstat (limited to 'm4/sockpfaf.m4')
| -rw-r--r-- | m4/sockpfaf.m4 | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/m4/sockpfaf.m4 b/m4/sockpfaf.m4 new file mode 100644 index 0000000..b224fae --- /dev/null +++ b/m4/sockpfaf.m4 @@ -0,0 +1,39 @@ +# sockpfaf.m4 serial 2 +dnl Copyright (C) 2004 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 Test for some common socket protocol families (PF_INET, PF_INET6, ...) +dnl and some common address families (AF_INET, AF_INET6, ...). +dnl This test assumes that a system supports an address family if and only if +dnl it supports the corresponding protocol family. + +dnl From Bruno Haible. + +AC_DEFUN([gl_SOCKET_FAMILIES], +[ + AC_MSG_CHECKING(for IPv4 sockets) + AC_CACHE_VAL(gl_cv_socket_ipv4, + [AC_TRY_COMPILE([#include <sys/types.h> +#include <sys/socket.h> +#include <netinet/in.h>], +[int x = AF_INET; struct in_addr y; struct sockaddr_in z;], + gl_cv_socket_ipv4=yes, gl_cv_socket_ipv4=no)]) + AC_MSG_RESULT($gl_cv_socket_ipv4) + if test $gl_cv_socket_ipv4 = yes; then + AC_DEFINE(HAVE_IPV4, 1, [Define to 1 if <sys/socket.h> defines AF_INET.]) + fi + + AC_MSG_CHECKING(for IPv6 sockets) + AC_CACHE_VAL(gl_cv_socket_ipv6, + [AC_TRY_COMPILE([#include <sys/types.h> +#include <sys/socket.h> +#include <netinet/in.h>], +[int x = AF_INET6; struct in6_addr y; struct sockaddr_in6 z;], + gl_cv_socket_ipv6=yes, gl_cv_socket_ipv6=no)]) + AC_MSG_RESULT($gl_cv_socket_ipv6) + if test $gl_cv_socket_ipv6 = yes; then + AC_DEFINE(HAVE_IPV6, 1, [Define to 1 if <sys/socket.h> defines AF_INET6.]) + fi +]) |