| 1 | # unlocked-io.m4 serial 16
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| 2 |
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| 3 | # Copyright (C) 1998-2006, 2009-2021 Free Software Foundation, Inc.
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| 4 | #
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| 5 | # This file is free software; the Free Software Foundation
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| 6 | # gives unlimited permission to copy and/or distribute it,
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| 7 | # with or without modifications, as long as this notice is preserved.
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| 8 |
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| 9 | dnl From Jim Meyering.
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| 10 | dnl
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| 11 | dnl See if the glibc *_unlocked I/O macros or functions are available.
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| 12 | dnl Use only those *_unlocked macros or functions that are declared
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| 13 | dnl (because some of them were declared in Solaris 2.5.1 but were removed
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| 14 | dnl in Solaris 2.6, whereas we want binaries built on Solaris 2.5.1 to run
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| 15 | dnl on Solaris 2.6).
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| 16 |
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| 17 | AC_DEFUN([gl_FUNC_GLIBC_UNLOCKED_IO],
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| 18 | [
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| 19 | dnl Persuade glibc and Solaris <stdio.h> to declare
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| 20 | dnl fgets_unlocked(), fputs_unlocked() etc.
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| 21 | AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
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| 22 |
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| 23 | AC_CHECK_DECLS_ONCE([clearerr_unlocked])
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| 24 | AC_CHECK_DECLS_ONCE([feof_unlocked])
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| 25 | AC_CHECK_DECLS_ONCE([ferror_unlocked])
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| 26 | AC_CHECK_DECLS_ONCE([fflush_unlocked])
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| 27 | AC_CHECK_DECLS_ONCE([fgets_unlocked])
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| 28 | AC_CHECK_DECLS_ONCE([fputc_unlocked])
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| 29 | AC_CHECK_DECLS_ONCE([fputs_unlocked])
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| 30 | AC_CHECK_DECLS_ONCE([fread_unlocked])
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| 31 | AC_CHECK_DECLS_ONCE([fwrite_unlocked])
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| 32 | AC_CHECK_DECLS_ONCE([getc_unlocked])
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| 33 | AC_CHECK_DECLS_ONCE([getchar_unlocked])
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| 34 | AC_CHECK_DECLS_ONCE([putc_unlocked])
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| 35 | AC_CHECK_DECLS_ONCE([putchar_unlocked])
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| 36 | ])
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