1 # inet_pton.m4 serial 17
2 dnl Copyright (C) 2006, 2008-2012 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_PTON],
9 AC_REQUIRE([gl_ARPA_INET_H_DEFAULTS])
11 dnl Persuade Solaris <arpa/inet.h> to declare inet_pton.
12 AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
14 AC_REQUIRE([AC_C_RESTRICT])
16 dnl Most platforms that provide inet_pton define it in libc.
17 dnl Solaris 8..10 provide inet_pton in libnsl instead.
18 dnl Solaris 2.6..7 provide inet_pton in libresolv instead.
19 dnl Native Windows provides it in -lws2_32 instead, with a declaration in
20 dnl <ws2tcpip.h>, and it uses stdcall calling convention, not cdecl
21 dnl (hence we cannot use AC_CHECK_FUNCS, AC_SEARCH_LIBS to find it).
24 gl_PREREQ_SYS_H_WINSOCK2
25 if test $HAVE_WINSOCK2_H = 1; then
26 AC_CHECK_DECLS([inet_pton],,, [[#include <ws2tcpip.h>]])
27 if test $ac_cv_have_decl_inet_pton = yes; then
28 dnl It needs to be overridden, because the stdcall calling convention
29 dnl is not compliant with POSIX.
31 INET_PTON_LIB="-lws2_32"
38 AC_SEARCH_LIBS([inet_pton], [nsl resolv], [],
39 [AC_CHECK_FUNCS([inet_pton])
40 if test $ac_cv_func_inet_pton = no; then
46 if test "$ac_cv_search_inet_pton" != "no" \
47 && test "$ac_cv_search_inet_pton" != "none required"; then
48 INET_PTON_LIB="$ac_cv_search_inet_pton"
51 AC_CHECK_HEADERS_ONCE([netdb.h])
52 AC_CHECK_DECLS([inet_pton],,,
53 [[#include <arpa/inet.h>
58 if test $ac_cv_have_decl_inet_pton = no; then
62 AC_SUBST([INET_PTON_LIB])
65 # Prerequisites of lib/inet_pton.c.
66 AC_DEFUN([gl_PREREQ_INET_PTON], [
67 AC_REQUIRE([gl_SOCKET_FAMILIES])