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# getaddrinfo.m4 serial 17
dnl Copyright (C) 2004, 2005, 2006, 2007, 2008 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_GETADDRINFO],
[
AC_REQUIRE([gl_HEADER_SYS_SOCKET])dnl for HAVE_SYS_SOCKET_H, HAVE_WINSOCK2_H
AC_REQUIRE([gl_HEADER_NETDB])dnl for HAVE_NETDB_H
AC_MSG_NOTICE([checking how to do getaddrinfo, freeaddrinfo and getnameinfo])
AC_SEARCH_LIBS(getaddrinfo, [nsl socket])
AC_CACHE_CHECK([for getaddrinfo], [gl_cv_func_getaddrinfo], [
AC_TRY_LINK([
#include <sys/types.h>
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#ifdef HAVE_NETDB_H
#include <netdb.h>
#endif
#include <stddef.h>
], [getaddrinfo("", "", NULL, NULL);],
[gl_cv_func_getaddrinfo=yes],
[gl_cv_func_getaddrinfo=no])])
if test $gl_cv_func_getaddrinfo = no; then
AC_CACHE_CHECK(for getaddrinfo in ws2tcpip.h and -lws2_32,
gl_cv_w32_getaddrinfo, [
gl_cv_w32_getaddrinfo=no
am_save_LIBS="$LIBS"
LIBS="$LIBS -lws2_32"
AC_TRY_LINK([
#ifdef HAVE_WS2TCPIP_H
#include <ws2tcpip.h>
#endif
#include <stddef.h>
], [getaddrinfo(NULL, NULL, NULL, NULL);], gl_cv_w32_getaddrinfo=yes)
LIBS="$am_save_LIBS"])
if test "$gl_cv_w32_getaddrinfo" = "yes"; then
LIBS="$LIBS -lws2_32"
else
AC_LIBOBJ(getaddrinfo)
fi
fi
# We can't use AC_REPLACE_FUNCS here because gai_strerror may be an
# inline function declared in ws2tcpip.h, so we need to get that
# header included somehow.
AC_CACHE_CHECK([for gai_strerror (possibly via ws2tcpip.h)],
gl_cv_func_gai_strerror, [
AC_TRY_LINK([
#include <sys/types.h>
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#ifdef HAVE_NETDB_H
#include <netdb.h>
#endif
#ifdef HAVE_WS2TCPIP_H
#include <ws2tcpip.h>
#endif
#include <stddef.h>
], [gai_strerror (NULL);],
[gl_cv_func_gai_strerror=yes],
[gl_cv_func_gai_strerror=no])])
if test $gl_cv_func_gai_strerror = no; then
AC_LIBOBJ(gai_strerror)
fi
gl_PREREQ_GETADDRINFO
])
# Prerequisites of lib/netdb.in.h and lib/getaddrinfo.c.
AC_DEFUN([gl_PREREQ_GETADDRINFO], [
AC_REQUIRE([gl_NETDB_H_DEFAULTS])
AC_REQUIRE([gl_HEADER_SYS_SOCKET])dnl for HAVE_SYS_SOCKET_H, HAVE_WINSOCK2_H
AC_SEARCH_LIBS(gethostbyname, [inet nsl])
AC_SEARCH_LIBS(getservbyname, [inet nsl socket xnet])
AC_CHECK_FUNCS(gethostbyname,, [
AC_CACHE_CHECK(for gethostbyname in winsock2.h and -lws2_32,
gl_cv_w32_gethostbyname, [
gl_cv_w32_gethostbyname=no
am_save_LIBS="$LIBS"
LIBS="$LIBS -lws2_32"
AC_TRY_LINK([
#ifdef HAVE_WINSOCK2_H
#include <winsock2.h>
#endif
#include <stddef.h>
], [gethostbyname(NULL);], gl_cv_w32_gethostbyname=yes)
LIBS="$am_save_LIBS"])
if test "$gl_cv_w32_gethostbyname" = "yes"; then
LIBS="$LIBS -lws2_32"
fi
])
AC_REQUIRE([AC_C_RESTRICT])
AC_REQUIRE([gl_SOCKET_FAMILIES])
AC_REQUIRE([gl_HEADER_SYS_SOCKET])
AC_REQUIRE([AC_C_INLINE])
AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
dnl Including sys/socket.h is wrong for Windows, but Windows does not
dnl have sa_len so the result is correct anyway.
AC_CHECK_MEMBERS([struct sockaddr.sa_len], , , [#include <sys/socket.h>])
AC_CHECK_HEADERS_ONCE(netinet/in.h)
AC_CHECK_DECLS([getaddrinfo, freeaddrinfo, gai_strerror, getnameinfo],,,[
/* sys/types.h is not needed according to POSIX, but the
sys/socket.h in i386-unknown-freebsd4.10 and
powerpc-apple-darwin5.5 required it. */
#include <sys/types.h>
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#ifdef HAVE_NETDB_H
#include <netdb.h>
#endif
#ifdef HAVE_WS2TCPIP_H
#include <ws2tcpip.h>
#endif
])
if test $ac_cv_have_decl_getaddrinfo = no; then
HAVE_DECL_GETADDRINFO=0
fi
if test $ac_cv_have_decl_freeaddrinfo = no; then
HAVE_DECL_FREEADDRINFO=0
fi
if test $ac_cv_have_decl_gai_strerror = no; then
HAVE_DECL_GAI_STRERROR=0
fi
if test $ac_cv_have_decl_getnameinfo = no; then
HAVE_DECL_GETNAMEINFO=0
fi
AC_CHECK_TYPES([struct addrinfo],,,[
#include <sys/types.h>
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#ifdef HAVE_NETDB_H
#include <netdb.h>
#endif
#ifdef HAVE_WS2TCPIP_H
#include <ws2tcpip.h>
#endif
])
if test $ac_cv_type_struct_addrinfo = no; then
HAVE_STRUCT_ADDRINFO=0
fi
])
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