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

Subversion Repositories openrisc

[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [config/] [override.m4] - Blame information for rev 724

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

Line No. Rev Author Line
1 722 jeremybenn
dnl Fix Autoconf bugs by overriding broken internal Autoconf
2
dnl macros with backports of fixes from newer releases.
3
dnl
4
dnl The override bits of this file should be a no-op for the newest
5
dnl Autoconf version, which means they can be removed once the complete
6
dnl tree has moved to a new enough Autoconf version.
7
dnl
8
dnl The _GCC_AUTOCONF_VERSION_TEST ensures that exactly the desired
9
dnl Autoconf version is used.  It should be kept for consistency.
10
 
11
dnl Use ifdef/ifelse over m4_ifdef/m4_ifelse to be clean for 2.13.
12
ifdef([m4_PACKAGE_VERSION], [
13
 
14
dnl Provide m4_copy_force and m4_rename_force for old Autoconf versions.
15
 
16
m4_ifndef([m4_copy_force],
17
[m4_define([m4_copy_force],
18
[m4_ifdef([$2], [m4_undefine([$2])])m4_copy($@)])])
19
 
20
m4_ifndef([m4_rename_force],
21
[m4_define([m4_rename_force],
22
[m4_ifdef([$2], [m4_undefine([$2])])m4_rename($@)])])
23
 
24
dnl AC_DEFUN a commonly used macro so this file is picked up.
25
m4_copy([AC_PREREQ], [_AC_PREREQ])
26
AC_DEFUN([AC_PREREQ], [frob])
27
m4_copy_force([_AC_PREREQ], [AC_PREREQ])
28
 
29
 
30
dnl Ensure exactly this Autoconf version is used
31
m4_ifndef([_GCC_AUTOCONF_VERSION],
32
  [m4_define([_GCC_AUTOCONF_VERSION], [2.64])])
33
 
34
dnl Test for the exact version when AC_INIT is expanded.
35
dnl This allows to update the tree in steps (for testing)
36
dnl by putting
37
dnl   m4_define([_GCC_AUTOCONF_VERSION], [X.Y])
38
dnl in configure.ac before AC_INIT,
39
dnl without rewriting this file.
40
dnl Or for updating the whole tree at once with the definition above.
41
AC_DEFUN([_GCC_AUTOCONF_VERSION_CHECK],
42
[m4_if(m4_defn([_GCC_AUTOCONF_VERSION]),
43
  m4_defn([m4_PACKAGE_VERSION]), [],
44
  [m4_fatal([Please use exactly Autoconf ]_GCC_AUTOCONF_VERSION[ instead of ]m4_defn([m4_PACKAGE_VERSION])[.])])
45
])
46
m4_define([AC_INIT], m4_defn([AC_INIT])[
47
_GCC_AUTOCONF_VERSION_CHECK
48
])
49
 
50
 
51
dnl Ensure we do not use a buggy M4.
52
m4_if(m4_index([..wi.d.], [.d.]), [-1],
53
  [m4_fatal(m4_do([m4 with buggy strstr detected.  Please install
54
GNU M4 1.4.16 or newer and set the M4 environment variable]))])
55
 
56
 
57
dnl Fix 2.64 cross compile detection for AVR and RTEMS
58
dnl by not trying to compile fopen.
59
m4_if(m4_defn([m4_PACKAGE_VERSION]), [2.64],
60
  [m4_foreach([_GCC_LANG], [C, C++, Fortran, Fortran 77],
61
     [m4_define([_AC_LANG_IO_PROGRAM(]_GCC_LANG[)], m4_defn([AC_LANG_PROGRAM(]_GCC_LANG[)]))])])
62
 
63
m4_version_prereq([2.66],, [
64
dnl We need AC_CHECK_DECL which works for overloaded C++ functions.
65
 
66
# _AC_CHECK_DECL_BODY
67
# -------------------
68
# Shell function body for AC_CHECK_DECL.
69
m4_define([_AC_CHECK_DECL_BODY],
70
[  AS_LINENO_PUSH([$[]1])
71
  [as_decl_name=`echo $][2|sed 's/ *(.*//'`]
72
  [as_decl_use=`echo $][2|sed -e 's/(/((/' -e 's/)/) 0&/' -e 's/,/) 0& (/g'`]
73
  AC_CACHE_CHECK([whether $as_decl_name is declared], [$[]3],
74
  [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([$[]4],
75
[@%:@ifndef $[]as_decl_name
76
@%:@ifdef __cplusplus
77
  (void) $[]as_decl_use;
78
@%:@else
79
  (void) $[]as_decl_name;
80
@%:@endif
81
@%:@endif
82
])],
83
                   [AS_VAR_SET([$[]3], [yes])],
84
                   [AS_VAR_SET([$[]3], [no])])])
85
  AS_LINENO_POP
86
])# _AC_CHECK_DECL_BODY
87
 
88
# _AC_CHECK_DECLS(SYMBOL, ACTION-IF_FOUND, ACTION-IF-NOT-FOUND,
89
#                 INCLUDES)
90
# -------------------------------------------------------------
91
# Helper to AC_CHECK_DECLS, which generates the check for a single
92
# SYMBOL with INCLUDES, performs the AC_DEFINE, then expands
93
# ACTION-IF-FOUND or ACTION-IF-NOT-FOUND.
94
m4_define([_AC_CHECK_DECLS],
95
[AC_CHECK_DECL([$1], [ac_have_decl=1], [ac_have_decl=0], [$4])]dnl
96
[AC_DEFINE_UNQUOTED(AS_TR_CPP(m4_bpatsubst(HAVE_DECL_[$1],[ *(.*])),
97
  [$ac_have_decl],
98
  [Define to 1 if you have the declaration of `$1',
99
   and to 0 if you don't.])]dnl
100
[m4_ifvaln([$2$3], [AS_IF([test $ac_have_decl = 1], [$2], [$3])])])
101
 
102
])
103
 
104
])

powered by: WebSVN 2.1.0

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