-# netdb_h.m4 serial 5
-dnl Copyright (C) 2008 Free Software Foundation, Inc.
+# netdb_h.m4 serial 9
+dnl Copyright (C) 2008, 2009, 2010 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.
AC_DEFUN([gl_HEADER_NETDB],
[
AC_REQUIRE([gl_NETDB_H_DEFAULTS])
+ AC_CHECK_HEADERS_ONCE([netdb.h])
gl_CHECK_NEXT_HEADERS([netdb.h])
if test $ac_cv_header_netdb_h = yes; then
- AC_COMPILE_IFELSE(
- [AC_LANG_PROGRAM([[
- #include <netdb.h>
- struct addrinfo a;
- int b = EAI_OVERFLOW;
- int c = AI_NUMERICSERV;
- ]])],
- [NETDB_H=''], [NETDB_H='netdb.h'])
HAVE_NETDB_H=1
else
- NETDB_H='netdb.h'
HAVE_NETDB_H=0
fi
AC_SUBST([HAVE_NETDB_H])
- AC_SUBST([NETDB_H])
+
+ dnl Check for declarations of anything we want to poison if the
+ dnl corresponding gnulib module is not in use.
+ gl_WARN_ON_USE_PREPARE([[#include <netdb.h>]],
+ [getaddrinfo freeaddrinfo gai_strerror getnameinfo])
])
AC_DEFUN([gl_NETDB_MODULE_INDICATOR],
[
dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
AC_REQUIRE([gl_NETDB_H_DEFAULTS])
- GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
+ gl_MODULE_INDICATOR_SET_VARIABLE([$1])
])
AC_DEFUN([gl_NETDB_H_DEFAULTS],