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source: kBuild/trunk/src/grep/m4/obstack.m4

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.

  • Property svn:eol-style set to LF
File size: 1.3 KB
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1# See if we need to provide obstacks.
2
3dnl Copyright 1996-2021 Free Software Foundation, Inc.
4dnl This file is free software; the Free Software Foundation
5dnl gives unlimited permission to copy and/or distribute it,
6dnl with or without modifications, as long as this notice is preserved.
7
8dnl This replaces Autoconf's AC_FUNC_OBSTACK.
9dnl The Autoconf version should be marked obsolete at some point.
10
11AC_DEFUN([AC_FUNC_OBSTACK],
12 [AC_LIBSOURCES([obstack.h, obstack.c])dnl
13 AC_CACHE_CHECK([for obstacks that work with any size object],
14 [ac_cv_func_obstack],
15 [AC_LINK_IFELSE(
16 [AC_LANG_PROGRAM(
17 [[#include "obstack.h"
18 void *obstack_chunk_alloc (size_t n) { return 0; }
19 void obstack_chunk_free (void *p) { }
20 /* Check that an internal function returns size_t, not int. */
21 size_t _obstack_memory_used (struct obstack *);
22 ]],
23 [[struct obstack mem;
24 obstack_init (&mem);
25 obstack_free (&mem, 0);
26 ]])],
27 [ac_cv_func_obstack=yes],
28 [ac_cv_func_obstack=no])])
29 if test "$ac_cv_func_obstack" = yes; then
30 AC_DEFINE([HAVE_OBSTACK], 1,
31 [Define to 1 if the system has obstacks that work with any size object.])
32 else
33 AC_LIBOBJ([obstack])
34 fi
35])
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