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annotate m4/unlocked-io.m4 @ 17252:7a29ec33d6c5

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author Karl Berry <karl@freefriends.org>
date Tue, 01 Jan 2013 09:17:08 -0800
parents e542fd46ad6f
children 344018b6e5d7
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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11007
f6cba5a556ce many *.m4 files: improve m4 quoting
Jim Meyering <meyering@redhat.com>
parents: 7172
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1 # unlocked-io.m4 serial 15
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Paul Eggert <eggert@cs.ucla.edu>
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2
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e542fd46ad6f maint: update all copyright year number ranges
Eric Blake <eblake@redhat.com>
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3 # Copyright (C) 1998-2006, 2009-2013 Free Software Foundation, Inc.
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Paul Eggert <eggert@cs.ucla.edu>
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4 #
87c42e194f4a Use an all-permissive copyright notice, recommended by RMS.
Paul Eggert <eggert@cs.ucla.edu>
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5 # This file is free software; the Free Software Foundation
87c42e194f4a Use an all-permissive copyright notice, recommended by RMS.
Paul Eggert <eggert@cs.ucla.edu>
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6 # gives unlimited permission to copy and/or distribute it,
87c42e194f4a Use an all-permissive copyright notice, recommended by RMS.
Paul Eggert <eggert@cs.ucla.edu>
parents: 5318
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7 # with or without modifications, as long as this notice is preserved.
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7c1a6b73f48e An autoconf macro for its associated module.
Bruno Haible <bruno@clisp.org>
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8
7c1a6b73f48e An autoconf macro for its associated module.
Bruno Haible <bruno@clisp.org>
parents:
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9 dnl From Jim Meyering.
7c1a6b73f48e An autoconf macro for its associated module.
Bruno Haible <bruno@clisp.org>
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10 dnl
7c1a6b73f48e An autoconf macro for its associated module.
Bruno Haible <bruno@clisp.org>
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11 dnl See if the glibc *_unlocked I/O macros or functions are available.
7c1a6b73f48e An autoconf macro for its associated module.
Bruno Haible <bruno@clisp.org>
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12 dnl Use only those *_unlocked macros or functions that are declared
7c1a6b73f48e An autoconf macro for its associated module.
Bruno Haible <bruno@clisp.org>
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13 dnl (because some of them were declared in Solaris 2.5.1 but were removed
7c1a6b73f48e An autoconf macro for its associated module.
Bruno Haible <bruno@clisp.org>
parents:
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14 dnl in Solaris 2.6, whereas we want binaries built on Solaris 2.5.1 to run
7c1a6b73f48e An autoconf macro for its associated module.
Bruno Haible <bruno@clisp.org>
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15 dnl on Solaris 2.6).
7c1a6b73f48e An autoconf macro for its associated module.
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16
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Jim Meyering <jim@meyering.net>
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17 AC_DEFUN([gl_FUNC_GLIBC_UNLOCKED_IO],
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18 [
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Jim Meyering <meyering@redhat.com>
parents: 7172
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19 AC_DEFINE([USE_UNLOCKED_IO], [1],
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Paul Eggert <eggert@cs.ucla.edu>
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20 [Define to 1 if you want getc etc. to use unlocked I/O if available.
7c24a825b51d Remove dependencies on unlocked-io.
Paul Eggert <eggert@cs.ucla.edu>
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21 Unlocked I/O can improve performance in unithreaded apps,
7c24a825b51d Remove dependencies on unlocked-io.
Paul Eggert <eggert@cs.ucla.edu>
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22 but it is not safe for multithreaded apps.])
7c24a825b51d Remove dependencies on unlocked-io.
Paul Eggert <eggert@cs.ucla.edu>
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23
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Paul Eggert <eggert@cs.ucla.edu>
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24 dnl Persuade glibc and Solaris <stdio.h> to declare
ae4b157d42ad New module 'extensions', used by timespec and unlocked-io
Paul Eggert <eggert@cs.ucla.edu>
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25 dnl fgets_unlocked(), fputs_unlocked() etc.
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26 AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
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20164454be7f * argp.m4 (gl_ARGP): Don't call AC_CHECK_DECLS_ONCE with more than
Paul Eggert <eggert@cs.ucla.edu>
parents: 5721
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28 AC_CHECK_DECLS_ONCE([clearerr_unlocked])
20164454be7f * argp.m4 (gl_ARGP): Don't call AC_CHECK_DECLS_ONCE with more than
Paul Eggert <eggert@cs.ucla.edu>
parents: 5721
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29 AC_CHECK_DECLS_ONCE([feof_unlocked])
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Paul Eggert <eggert@cs.ucla.edu>
parents: 5721
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30 AC_CHECK_DECLS_ONCE([ferror_unlocked])
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Paul Eggert <eggert@cs.ucla.edu>
parents: 5721
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31 AC_CHECK_DECLS_ONCE([fflush_unlocked])
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Paul Eggert <eggert@cs.ucla.edu>
parents: 5721
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32 AC_CHECK_DECLS_ONCE([fgets_unlocked])
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Paul Eggert <eggert@cs.ucla.edu>
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33 AC_CHECK_DECLS_ONCE([fputc_unlocked])
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parents: 5721
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34 AC_CHECK_DECLS_ONCE([fputs_unlocked])
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35 AC_CHECK_DECLS_ONCE([fread_unlocked])
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Paul Eggert <eggert@cs.ucla.edu>
parents: 5721
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36 AC_CHECK_DECLS_ONCE([fwrite_unlocked])
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Paul Eggert <eggert@cs.ucla.edu>
parents: 5721
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37 AC_CHECK_DECLS_ONCE([getc_unlocked])
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Paul Eggert <eggert@cs.ucla.edu>
parents: 5721
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38 AC_CHECK_DECLS_ONCE([getchar_unlocked])
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Paul Eggert <eggert@cs.ucla.edu>
parents: 5721
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39 AC_CHECK_DECLS_ONCE([putc_unlocked])
20164454be7f * argp.m4 (gl_ARGP): Don't call AC_CHECK_DECLS_ONCE with more than
Paul Eggert <eggert@cs.ucla.edu>
parents: 5721
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40 AC_CHECK_DECLS_ONCE([putchar_unlocked])
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41 ])