Question on Porting configure.ac

[Ryan McDougall]

I have found the existence of the following kind of code in configure.ac

#### Abstract sockets

#AC_LANG_PUSH(C)
#AC_CACHE_CHECK([abstract socket namespace],
#		ac_cv_have_abstract_sockets,
#		[AC_RUN_IFELSE([AC_LANG_PROGRAM(
#[[
##include <sys/types.h>
##include <stdlib.h>
##include <string.h>
##include <stdio.h>
##include <sys/socket.h>
##include <sys/un.h>
##include <errno.h>
#]],
#[[
#  int listen_fd;
#  struct sockaddr_un addr;
#
#  listen_fd = socket (PF_UNIX, SOCK_STREAM, 0);
#
#  if (listen_fd < 0)
#    {
#      fprintf (stderr, "socket() failed: %s\n", strerror (errno));
#      exit (1);
#    }
#
#  memset (&addr, '\0', sizeof (addr));
#  addr.sun_family = AF_UNIX;
#  strcpy (addr.sun_path, "X/tmp/dbus-fake-socket-path-used-in-configure-test");
#  addr.sun_path[0] = '\0'; /* this is what makes it abstract */
#
#  if (bind (listen_fd, (struct sockaddr*) &addr, SUN_LEN (&addr)) < 0)
#    {
#       fprintf (stderr, "Abstract socket namespace bind() failed: %s\n",
#                strerror (errno));
#       exit (1);
#    }
#  else
#    exit (0);
#]])],
#              [ac_cv_have_abstract_sockets=yes],
#              [ac_cv_have_abstract_sockets=no]
#)])
#AC_LANG_POP(C)

I am no autotools expert. How can I change this to work without
brute-force commenting it out?

Cheers,