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Last change
on this file since 3661 was 3529, checked in by bird, 4 years ago |
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Imported grep 3.7 from grep-3.7.tar.gz (sha256: c22b0cf2d4f6bbe599c902387e8058990e1eee99aef333a203829e5fd3dbb342), applying minimal auto-props.
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File size:
1.1 KB
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| 1 | # serial 23
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| 2 |
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| 3 | # Copyright (C) 2000-2001, 2004-2021 Free Software Foundation, Inc.
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| 4 | # This file is free software; the Free Software Foundation
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| 5 | # gives unlimited permission to copy and/or distribute it,
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| 6 | # with or without modifications, as long as this notice is preserved.
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| 7 |
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| 8 | dnl From Jim Meyering
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| 9 | dnl Using code from emacs, based on suggestions from Paul Eggert
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| 10 | dnl and Ulrich Drepper.
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| 11 |
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| 12 | dnl Find out how to determine the number of pending output bytes on a stream.
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| 13 | dnl glibc (2.1.93 and newer) and Solaris provide __fpending. On other systems,
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| 14 | dnl we have to grub around in the (possibly opaque) FILE struct.
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| 15 |
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| 16 | AC_DEFUN([gl_FUNC_FPENDING],
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| 17 | [
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| 18 | AC_CHECK_HEADERS_ONCE([stdio_ext.h])
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| 19 | fp_headers='
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| 20 | #include <stdio.h>
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| 21 | #if HAVE_STDIO_EXT_H
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| 22 | # include <stdio_ext.h>
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| 23 | #endif
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| 24 | '
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| 25 | AC_CACHE_CHECK([for __fpending], [gl_cv_func___fpending],
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| 26 | [
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| 27 | AC_LINK_IFELSE(
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| 28 | [AC_LANG_PROGRAM([[$fp_headers]],
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| 29 | [[return ! __fpending (stdin);]])],
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| 30 | [gl_cv_func___fpending=yes],
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| 31 | [gl_cv_func___fpending=no])
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| 32 | ])
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| 33 | if test $gl_cv_func___fpending = yes; then
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| 34 | AC_CHECK_DECLS([__fpending], [], [], [$fp_headers])
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| 35 | fi
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| 36 | ])
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