OpenCores
URL https://opencores.org/ocsvn/openrisc/openrisc/trunk

Subversion Repositories openrisc

[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [config/] [extensions.m4] - Blame information for rev 734

Go to most recent revision | Details | Compare with Previous | View Log

Line No. Rev Author Line
1 722 jeremybenn
# serial 6  -*- Autoconf -*-
2
# Enable extensions on systems that normally disable them.
3
 
4
# Copyright (C) 2003, 2006, 2007, 2009 Free Software Foundation, Inc.
5
# This file is free software; the Free Software Foundation
6
# gives unlimited permission to copy and/or distribute it,
7
# with or without modifications, as long as this notice is preserved.
8
 
9
# This definition of AC_USE_SYSTEM_EXTENSIONS is stolen from CVS
10
# Autoconf.  Perhaps we can remove this once we can assume Autoconf
11
# 2.62 or later everywhere, but since CVS Autoconf mutates rapidly
12
# enough in this area it's likely we'll need to redefine
13
# AC_USE_SYSTEM_EXTENSIONS for quite some time.
14
 
15
m4_version_prereq([2.62],, [
16
 
17
# AC_USE_SYSTEM_EXTENSIONS
18
# ------------------------
19
# Enable extensions on systems that normally disable them,
20
# typically due to standards-conformance issues.
21
# Remember that #undef in AH_VERBATIM gets replaced with #define by
22
# AC_DEFINE.  The goal here is to define all known feature-enabling
23
# macros, then, if reports of conflicts are made, disable macros that
24
# cause problems on some platforms (such as __EXTENSIONS__).
25
AC_DEFUN([AC_USE_SYSTEM_EXTENSIONS],
26
[AC_BEFORE([$0], [AC_COMPILE_IFELSE])dnl
27
AC_BEFORE([$0], [AC_RUN_IFELSE])dnl
28
 
29
  AC_CHECK_HEADER([minix/config.h], [MINIX=yes], [MINIX=])
30
  if test "$MINIX" = yes; then
31
    AC_DEFINE([_POSIX_SOURCE], [1],
32
      [Define to 1 if you need to in order for `stat' and other
33
       things to work.])
34
    AC_DEFINE([_POSIX_1_SOURCE], [2],
35
      [Define to 2 if the system does not provide POSIX.1 features
36
       except with this defined.])
37
    AC_DEFINE([_MINIX], [1],
38
      [Define to 1 if on MINIX.])
39
  fi
40
 
41
  AH_VERBATIM([__EXTENSIONS__],
42
[/* Enable extensions on AIX 3, Interix.  */
43
#ifndef _ALL_SOURCE
44
# undef _ALL_SOURCE
45
#endif
46
/* Enable GNU extensions on systems that have them.  */
47
#ifndef _GNU_SOURCE
48
# undef _GNU_SOURCE
49
#endif
50
/* Enable threading extensions on Solaris.  */
51
#ifndef _POSIX_PTHREAD_SEMANTICS
52
# undef _POSIX_PTHREAD_SEMANTICS
53
#endif
54
/* Enable extensions on HP NonStop.  */
55
#ifndef _TANDEM_SOURCE
56
# undef _TANDEM_SOURCE
57
#endif
58
/* Enable general extensions on Solaris.  */
59
#ifndef __EXTENSIONS__
60
# undef __EXTENSIONS__
61
#endif
62
])
63
  AC_CACHE_CHECK([whether it is safe to define __EXTENSIONS__],
64
    [ac_cv_safe_to_define___extensions__],
65
    [AC_COMPILE_IFELSE(
66
       [AC_LANG_PROGRAM([
67
#         define __EXTENSIONS__ 1
68
          AC_INCLUDES_DEFAULT])],
69
       [ac_cv_safe_to_define___extensions__=yes],
70
       [ac_cv_safe_to_define___extensions__=no])])
71
  test $ac_cv_safe_to_define___extensions__ = yes &&
72
    AC_DEFINE([__EXTENSIONS__])
73
  AC_DEFINE([_ALL_SOURCE])
74
  AC_DEFINE([_GNU_SOURCE])
75
  AC_DEFINE([_POSIX_PTHREAD_SEMANTICS])
76
  AC_DEFINE([_TANDEM_SOURCE])
77
])# AC_USE_SYSTEM_EXTENSIONS
78
 
79
])

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.