74 lines
2.5 KiB
Text
74 lines
2.5 KiB
Text
# arpa_inet_h.m4 serial 17
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dnl Copyright (C) 2006, 2008-2023 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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dnl Written by Simon Josefsson and Bruno Haible
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AC_DEFUN_ONCE([gl_ARPA_INET_H],
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[
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dnl Ensure to expand the default settings once only, before all statements
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dnl that occur in other macros.
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AC_REQUIRE([gl_ARPA_INET_H_DEFAULTS])
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AC_CHECK_HEADERS_ONCE([arpa/inet.h])
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if test $ac_cv_header_arpa_inet_h = yes; then
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HAVE_ARPA_INET_H=1
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else
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HAVE_ARPA_INET_H=0
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fi
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AC_SUBST([HAVE_ARPA_INET_H])
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dnl <arpa/inet.h> is always overridden, because of GNULIB_POSIXCHECK.
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gl_CHECK_NEXT_HEADERS([arpa/inet.h])
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AC_REQUIRE([gl_FEATURES_H])
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gl_PREREQ_SYS_H_WS2TCPIP
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dnl Check for declarations of anything we want to poison if the
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dnl corresponding gnulib module is not in use.
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gl_WARN_ON_USE_PREPARE([[
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/* On some systems, this header is not self-consistent. */
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#if !(defined __GLIBC__ || defined __UCLIBC__)
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# include <sys/socket.h>
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#endif
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#ifdef __TANDEM
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# include <netdb.h>
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#endif
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#include <arpa/inet.h>
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]], [inet_ntop inet_pton])
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])
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# gl_ARPA_INET_MODULE_INDICATOR([modulename])
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# sets the shell variable that indicates the presence of the given module
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# to a C preprocessor expression that will evaluate to 1.
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# This macro invocation must not occur in macros that are AC_REQUIREd.
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AC_DEFUN([gl_ARPA_INET_MODULE_INDICATOR],
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[
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dnl Ensure to expand the default settings once only.
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gl_ARPA_INET_H_REQUIRE_DEFAULTS
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gl_MODULE_INDICATOR_SET_VARIABLE([$1])
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])
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# Initializes the default values for AC_SUBSTed shell variables.
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# This macro must not be AC_REQUIREd. It must only be invoked, and only
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# outside of macros or in macros that are not AC_REQUIREd.
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AC_DEFUN([gl_ARPA_INET_H_REQUIRE_DEFAULTS],
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[
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m4_defun(GL_MODULE_INDICATOR_PREFIX[_ARPA_INET_H_MODULE_INDICATOR_DEFAULTS], [
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_INET_NTOP])
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gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_INET_PTON])
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])
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m4_require(GL_MODULE_INDICATOR_PREFIX[_ARPA_INET_H_MODULE_INDICATOR_DEFAULTS])
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AC_REQUIRE([gl_ARPA_INET_H_DEFAULTS])
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])
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AC_DEFUN([gl_ARPA_INET_H_DEFAULTS],
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[
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dnl Assume proper GNU behavior unless another module says otherwise.
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HAVE_DECL_INET_NTOP=1; AC_SUBST([HAVE_DECL_INET_NTOP])
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HAVE_DECL_INET_PTON=1; AC_SUBST([HAVE_DECL_INET_PTON])
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REPLACE_INET_NTOP=0; AC_SUBST([REPLACE_INET_NTOP])
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REPLACE_INET_PTON=0; AC_SUBST([REPLACE_INET_PTON])
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])
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