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Last change
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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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