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36 lines
1.3 KiB
Plaintext
36 lines
1.3 KiB
Plaintext
# See if we need to provide obstacks.
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dnl Copyright 1996-2017 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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dnl This replaces Autoconf's AC_FUNC_OBSTACK.
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dnl The Autoconf version should be marked obsolete at some point.
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AC_DEFUN([AC_FUNC_OBSTACK],
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[AC_LIBSOURCES([obstack.h, obstack.c])dnl
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AC_CACHE_CHECK([for obstacks that work with any size object],
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[ac_cv_func_obstack],
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[AC_LINK_IFELSE(
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[AC_LANG_PROGRAM(
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[[#include "obstack.h"
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void *obstack_chunk_alloc (size_t n) { return 0; }
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void obstack_chunk_free (void *p) { }
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/* Check that an internal function returns size_t, not int. */
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size_t _obstack_memory_used (struct obstack *);
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]],
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[[struct obstack mem;
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obstack_init (&mem);
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obstack_free (&mem, 0);
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]])],
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[ac_cv_func_obstack=yes],
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[ac_cv_func_obstack=no])])
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if test "$ac_cv_func_obstack" = yes; then
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AC_DEFINE([HAVE_OBSTACK], 1,
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[Define to 1 if the system has obstacks that work with any size object.])
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else
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AC_LIBOBJ([obstack])
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fi
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])
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