1 # inet_ntop.m4 serial 18
2 dnl Copyright (C) 2005-2006, 2008-2011 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.
7 AC_DEFUN([gl_FUNC_INET_NTOP],
9 dnl Persuade Solaris <arpa/inet.h> to declare inet_ntop.
10 AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
12 AC_REQUIRE([AC_C_RESTRICT])
14 dnl Most platforms that provide inet_ntop define it in libc.
15 dnl Solaris 8..10 provide inet_ntop in libnsl instead.
16 dnl Solaris 2.6..7 provide inet_ntop in libresolv instead.
17 dnl Native Windows provides it in -lws2_32 instead, with a declaration in
18 dnl <ws2tcpip.h>, and it uses stdcall calling convention, not cdecl
19 dnl (hence we cannot use AC_CHECK_FUNCS, AC_SEARCH_LIBS to find it).
22 gl_PREREQ_SYS_H_WINSOCK2
23 if test $HAVE_WINSOCK2_H = 1; then
24 AC_CHECK_DECLS([inet_ntop],,, [[#include <ws2tcpip.h>]])
25 if test $ac_cv_have_decl_inet_ntop = yes; then
26 dnl It needs to be overridden, because the stdcall calling convention
27 dnl is not compliant with POSIX.
29 INET_NTOP_LIB="-lws2_32"
36 AC_SEARCH_LIBS([inet_ntop], [nsl resolv], [],
37 [AC_CHECK_FUNCS([inet_ntop])
38 if test $ac_cv_func_inet_ntop = no; then
44 if test "$ac_cv_search_inet_ntop" != "no" \
45 && test "$ac_cv_search_inet_ntop" != "none required"; then
46 INET_NTOP_LIB="$ac_cv_search_inet_ntop"
49 AC_CHECK_HEADERS_ONCE([netdb.h])
50 AC_CHECK_DECLS([inet_ntop],,,
51 [[#include <arpa/inet.h>
56 if test $ac_cv_have_decl_inet_ntop = no; then
60 AC_SUBST([INET_NTOP_LIB])
63 # Prerequisites of lib/inet_ntop.c.
64 AC_DEFUN([gl_PREREQ_INET_NTOP], [
65 AC_REQUIRE([gl_SOCKET_FAMILIES])