| 1 | # arpa_inet_h.m4 serial 17
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| 2 | dnl Copyright (C) 2006, 2008-2021 Free Software Foundation, Inc.
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| 3 | dnl This file is free software; the Free Software Foundation
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| 4 | dnl gives unlimited permission to copy and/or distribute it,
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| 5 | dnl with or without modifications, as long as this notice is preserved.
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| 6 |
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| 7 | dnl Written by Simon Josefsson and Bruno Haible
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| 8 |
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| 9 | AC_DEFUN_ONCE([gl_ARPA_INET_H],
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| 10 | [
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| 11 | dnl Ensure to expand the default settings once only, before all statements
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| 12 | dnl that occur in other macros.
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| 13 | AC_REQUIRE([gl_ARPA_INET_H_DEFAULTS])
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| 14 |
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| 15 | AC_CHECK_HEADERS_ONCE([arpa/inet.h])
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| 16 | if test $ac_cv_header_arpa_inet_h = yes; then
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| 17 | HAVE_ARPA_INET_H=1
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| 18 | else
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| 19 | HAVE_ARPA_INET_H=0
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| 20 | fi
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| 21 | AC_SUBST([HAVE_ARPA_INET_H])
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| 22 | dnl <arpa/inet.h> is always overridden, because of GNULIB_POSIXCHECK.
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| 23 | gl_CHECK_NEXT_HEADERS([arpa/inet.h])
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| 24 |
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| 25 | AC_REQUIRE([gl_FEATURES_H])
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| 26 |
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| 27 | gl_PREREQ_SYS_H_WS2TCPIP
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| 28 |
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| 29 | dnl Check for declarations of anything we want to poison if the
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| 30 | dnl corresponding gnulib module is not in use.
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| 31 | gl_WARN_ON_USE_PREPARE([[
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| 32 | /* On some systems, this header is not self-consistent. */
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| 33 | #if !(defined __GLIBC__ || defined __UCLIBC__)
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| 34 | # include <sys/socket.h>
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| 35 | #endif
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| 36 | #ifdef __TANDEM
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| 37 | # include <netdb.h>
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| 38 | #endif
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| 39 | #include <arpa/inet.h>
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| 40 | ]], [inet_ntop inet_pton])
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| 41 | ])
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| 42 |
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| 43 | # gl_ARPA_INET_MODULE_INDICATOR([modulename])
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| 44 | # sets the shell variable that indicates the presence of the given module
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| 45 | # to a C preprocessor expression that will evaluate to 1.
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| 46 | # This macro invocation must not occur in macros that are AC_REQUIREd.
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| 47 | AC_DEFUN([gl_ARPA_INET_MODULE_INDICATOR],
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| 48 | [
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| 49 | dnl Ensure to expand the default settings once only.
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| 50 | gl_ARPA_INET_H_REQUIRE_DEFAULTS
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| 51 | gl_MODULE_INDICATOR_SET_VARIABLE([$1])
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| 52 | ])
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| 53 |
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| 54 | # Initializes the default values for AC_SUBSTed shell variables.
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| 55 | # This macro must not be AC_REQUIREd. It must only be invoked, and only
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| 56 | # outside of macros or in macros that are not AC_REQUIREd.
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| 57 | AC_DEFUN([gl_ARPA_INET_H_REQUIRE_DEFAULTS],
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| 58 | [
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| 59 | m4_defun(GL_MODULE_INDICATOR_PREFIX[_ARPA_INET_H_MODULE_INDICATOR_DEFAULTS], [
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| 60 | gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_INET_NTOP])
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| 61 | gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_INET_PTON])
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| 62 | ])
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| 63 | m4_require(GL_MODULE_INDICATOR_PREFIX[_ARPA_INET_H_MODULE_INDICATOR_DEFAULTS])
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| 64 | AC_REQUIRE([gl_ARPA_INET_H_DEFAULTS])
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| 65 | ])
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| 66 |
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| 67 | AC_DEFUN([gl_ARPA_INET_H_DEFAULTS],
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| 68 | [
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| 69 | dnl Assume proper GNU behavior unless another module says otherwise.
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| 70 | HAVE_DECL_INET_NTOP=1; AC_SUBST([HAVE_DECL_INET_NTOP])
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| 71 | HAVE_DECL_INET_PTON=1; AC_SUBST([HAVE_DECL_INET_PTON])
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| 72 | REPLACE_INET_NTOP=0; AC_SUBST([REPLACE_INET_NTOP])
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| 73 | REPLACE_INET_PTON=0; AC_SUBST([REPLACE_INET_PTON])
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| 74 | ])
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