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# arpa_inet_h.m4 serial 17
dnl Copyright (C) 2006, 2008-2023 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.
dnl Written by Simon Josefsson and Bruno Haible
AC_DEFUN_ONCE([gl_ARPA_INET_H],
[
dnl Ensure to expand the default settings once only, before all statements
dnl that occur in other macros.
AC_REQUIRE([gl_ARPA_INET_H_DEFAULTS])
AC_CHECK_HEADERS_ONCE([arpa/inet.h])
if test $ac_cv_header_arpa_inet_h = yes; then
HAVE_ARPA_INET_H=1
else
HAVE_ARPA_INET_H=0
fi
AC_SUBST([HAVE_ARPA_INET_H])
dnl <arpa/inet.h> is always overridden, because of GNULIB_POSIXCHECK.
gl_CHECK_NEXT_HEADERS([arpa/inet.h])
AC_REQUIRE([gl_FEATURES_H])
gl_PREREQ_SYS_H_WS2TCPIP
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([[
/* On some systems, this header is not self-consistent. */
#if !(defined __GLIBC__ || defined __UCLIBC__)
# include <sys/socket.h>
#endif
#ifdef __TANDEM
# include <netdb.h>
#endif
#include <arpa/inet.h>
]], [inet_ntop inet_pton])
])
# gl_ARPA_INET_MODULE_INDICATOR([modulename])
# sets the shell variable that indicates the presence of the given module
# to a C preprocessor expression that will evaluate to 1.
# This macro invocation must not occur in macros that are AC_REQUIREd.
AC_DEFUN([gl_ARPA_INET_MODULE_INDICATOR],
[
dnl Ensure to expand the default settings once only.
gl_ARPA_INET_H_REQUIRE_DEFAULTS
gl_MODULE_INDICATOR_SET_VARIABLE([$1])
])
# Initializes the default values for AC_SUBSTed shell variables.
# This macro must not be AC_REQUIREd. It must only be invoked, and only
# outside of macros or in macros that are not AC_REQUIREd.
AC_DEFUN([gl_ARPA_INET_H_REQUIRE_DEFAULTS],
[
m4_defun(GL_MODULE_INDICATOR_PREFIX[_ARPA_INET_H_MODULE_INDICATOR_DEFAULTS], [
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_INET_NTOP])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_INET_PTON])
])
m4_require(GL_MODULE_INDICATOR_PREFIX[_ARPA_INET_H_MODULE_INDICATOR_DEFAULTS])
AC_REQUIRE([gl_ARPA_INET_H_DEFAULTS])
])
AC_DEFUN([gl_ARPA_INET_H_DEFAULTS],
[
dnl Assume proper GNU behavior unless another module says otherwise.
HAVE_DECL_INET_NTOP=1; AC_SUBST([HAVE_DECL_INET_NTOP])
HAVE_DECL_INET_PTON=1; AC_SUBST([HAVE_DECL_INET_PTON])
REPLACE_INET_NTOP=0; AC_SUBST([REPLACE_INET_NTOP])
REPLACE_INET_PTON=0; AC_SUBST([REPLACE_INET_PTON])
])
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