Last change
on this file was 3529, checked in by bird, 3 years ago |
Imported grep 3.7 from grep-3.7.tar.gz (sha256: c22b0cf2d4f6bbe599c902387e8058990e1eee99aef333a203829e5fd3dbb342), applying minimal auto-props.
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1 | # See if we need to provide obstacks.
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2 |
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3 | dnl Copyright 1996-2021 Free Software Foundation, Inc.
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4 | dnl This file is free software; the Free Software Foundation
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5 | dnl gives unlimited permission to copy and/or distribute it,
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6 | dnl with or without modifications, as long as this notice is preserved.
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7 |
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8 | dnl This replaces Autoconf's AC_FUNC_OBSTACK.
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9 | dnl The Autoconf version should be marked obsolete at some point.
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10 |
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11 | AC_DEFUN([AC_FUNC_OBSTACK],
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12 | [AC_LIBSOURCES([obstack.h, obstack.c])dnl
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13 | AC_CACHE_CHECK([for obstacks that work with any size object],
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14 | [ac_cv_func_obstack],
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15 | [AC_LINK_IFELSE(
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16 | [AC_LANG_PROGRAM(
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17 | [[#include "obstack.h"
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18 | void *obstack_chunk_alloc (size_t n) { return 0; }
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19 | void obstack_chunk_free (void *p) { }
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20 | /* Check that an internal function returns size_t, not int. */
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21 | size_t _obstack_memory_used (struct obstack *);
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22 | ]],
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23 | [[struct obstack mem;
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24 | obstack_init (&mem);
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25 | obstack_free (&mem, 0);
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26 | ]])],
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27 | [ac_cv_func_obstack=yes],
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28 | [ac_cv_func_obstack=no])])
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29 | if test "$ac_cv_func_obstack" = yes; then
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30 | AC_DEFINE([HAVE_OBSTACK], 1,
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31 | [Define to 1 if the system has obstacks that work with any size object.])
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32 | else
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33 | AC_LIBOBJ([obstack])
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34 | fi
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35 | ])
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