m4/netdb_h.m4

   1 # netdb_h.m4 serial 9
   2 dnl Copyright (C) 2008, 2009, 2010 Free Software Foundation, Inc.
   3 dnl This file is free software; the Free Software Foundation
   4 dnl gives unlimited permission to copy and/or distribute it,
   5 dnl with or without modifications, as long as this notice is preserved.
   6
   7 AC_DEFUN([gl_HEADER_NETDB],
   8 [
   9   AC_REQUIRE([gl_NETDB_H_DEFAULTS])
  10   AC_CHECK_HEADERS_ONCE([netdb.h])
  11   gl_CHECK_NEXT_HEADERS([netdb.h])
  12   if test $ac_cv_header_netdb_h = yes; then
  13     HAVE_NETDB_H=1
  14   else
  15     HAVE_NETDB_H=0
  16   fi
  17   AC_SUBST([HAVE_NETDB_H])
  18
  19   dnl Check for declarations of anything we want to poison if the
  20   dnl corresponding gnulib module is not in use.
  21   gl_WARN_ON_USE_PREPARE([[#include <netdb.h>]],
  22     [getaddrinfo freeaddrinfo gai_strerror getnameinfo])
  23 ])
  24
  25 AC_DEFUN([gl_NETDB_MODULE_INDICATOR],
  26 [
  27   dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
  28   AC_REQUIRE([gl_NETDB_H_DEFAULTS])
  29   gl_MODULE_INDICATOR_SET_VARIABLE([$1])
  30 ])
  31
  32 AC_DEFUN([gl_NETDB_H_DEFAULTS],
  33 [
  34   GNULIB_GETADDRINFO=0; AC_SUBST([GNULIB_GETADDRINFO])
  35   dnl Assume proper GNU behavior unless another module says otherwise.
  36   HAVE_STRUCT_ADDRINFO=1;   AC_SUBST([HAVE_STRUCT_ADDRINFO])
  37   HAVE_DECL_FREEADDRINFO=1; AC_SUBST([HAVE_DECL_FREEADDRINFO])
  38   HAVE_DECL_GAI_STRERROR=1; AC_SUBST([HAVE_DECL_GAI_STRERROR])
  39   HAVE_DECL_GETADDRINFO=1;  AC_SUBST([HAVE_DECL_GETADDRINFO])
  40   HAVE_DECL_GETNAMEINFO=1;  AC_SUBST([HAVE_DECL_GETNAMEINFO])
  41 ])