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annotate m4/inet_ntop.m4 @ 12454:f7624052e60d

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fcntl: support F_DUPFD_CLOEXEC on systems with fcntl Implement F_DUPFD_CLOEXEC. The unit test still fails on systems with other fcntl bugs (such as cygwin 1.5 mishandling F_DUPFD, or mingw lacking fcntl altogether). Passes on Linux, both with and without kernel support, and on cygwin 1.7. * modules/fcntl (Files): List new files. (configure.ac): Run a test. * m4/fcntl.m4 (gl_FUNC_FCNTL): New file. * lib/fcntl.c (rpl_fcntl): Likewise. * m4/fcntl_h.m4 (gl_FCNTL_H_DEFAULTS): Add witness defaults. (gl_FCNTL_H): Always replace fcntl.h. * modules/fcntl-h (Makefile.am): Substitute witnesses. * lib/fcntl.in.h (fcntl): Declare replacement. (F_DUPFD_CLOEXEC, GNULIB_defined_F_DUPFD_CLOEXEC): New macro when needed, plus a witness. * doc/posix-functions/fcntl.texi (fcntl): Document this. * doc/posix-headers/fcntl.texi (fcntl.h): Likewise. * tests/test-fcntl.c: New file. * modules/fcntl-tests: Likewise. Signed-off-by: Eric Blake <ebb9@byu.net>
author Eric Blake <ebb9@byu.net>
date Mon, 07 Dec 2009 11:50:59 -0700
parents 81468eb78706
children c2cbabec01dd
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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12238
66104f836834 Fix link error.
Bruno Haible <bruno@clisp.org>
parents: 12225
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1 # inet_ntop.m4 serial 11
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Jim Meyering <meyering@redhat.com>
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2 dnl Copyright (C) 2005, 2006, 2008, 2009 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 AC_DEFUN([gl_INET_NTOP],
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8 [
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8406478f0d13 Ensure the system declares inet_ntop, inet_pton when possible.
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9 dnl Persuade Solaris <arpa/inet.h> to declare inet_ntop.
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10 AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
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11
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397ef6c67ada Avoid assigning ARPA_INET_H in different .m4 files.
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12 gl_REPLACE_ARPA_INET_H
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d26ac8a528f7 Enable gnulib's <arpa/inet.h> replacement also when inet_ntop or inet_pton need to be declared.
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13
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Simon Josefsson <simon@josefsson.org>
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14 dnl Most platforms that provide inet_ntop define it in libc.
e06ba2ed6c0f Avoid link error for inet_ntop on Solaris.
Simon Josefsson <simon@josefsson.org>
parents: 11450
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15 dnl Solaris 8..10 provide inet_ntop in libnsl instead.
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bbc8b00b08b5 Port inet_ntop to Solaris 8 (problem found in coreutils 7.2).
Paul Eggert <eggert@cs.ucla.edu>
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16 gl_save_LIBS=$LIBS
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17 AC_SEARCH_LIBS([inet_ntop], [nsl], [],
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18 [AC_REPLACE_FUNCS([inet_ntop])])
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19 LIBS=$gl_save_LIBS
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20 INET_NTOP_LIB=
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Simon Josefsson <simon@josefsson.org>
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21 if test "$ac_cv_search_inet_ntop" != "no" &&
81468eb78706 inet_ntop, inet_pton: Fix link error.
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22 test "$ac_cv_search_inet_ntop" != "none required"; then
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23 INET_NTOP_LIB="$ac_cv_search_inet_ntop"
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24 fi
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25 AC_SUBST([INET_NTOP_LIB])
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26
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27 gl_PREREQ_INET_NTOP
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28 ])
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29
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4d5ba95a0dec Move inet_ntop and inet_pton declarations to arpa/inet.h.
Simon Josefsson <simon@josefsson.org>
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30 # Prerequisites of lib/inet_ntop.c.
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31 AC_DEFUN([gl_PREREQ_INET_NTOP], [
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32 AC_CHECK_DECLS([inet_ntop],,,[#include <arpa/inet.h>])
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33 if test $ac_cv_have_decl_inet_ntop = no; then
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34 HAVE_DECL_INET_NTOP=0
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35 fi
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36 AC_REQUIRE([gl_SOCKET_FAMILIES])
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37 AC_REQUIRE([AC_C_RESTRICT])
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38 ])