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[/] [openrisc/] [trunk/] [gnu-old/] [newlib-1.17.0/] [config/] [override.m4] - Blame information for rev 816

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Line No. Rev Author Line
1 148 jeremybenn
dnl Fix Autoconf-2.59 bugs: by overriding broken internal
2
dnl Autoconf macros with backports of the 2.60+ fix.
3
dnl - AC_CONFIG_SUBDIRS whitespace mangling,
4
dnl - more lenient precious variable checks
5
dnl - better configure error message
6
dnl - reliance on non-Posix m4wrap (M4 1.6 or newer implement FIFO)
7
dnl
8
dnl The override bits of this file should be a no-op for the newest
9
dnl Autoconf version, which means they can be removed once the complete
10
dnl tree has moved to a new enough Autoconf version.
11
dnl
12
dnl The _GCC_AUTOCONF_VERSION_TEST ensures that exactly the desired
13
dnl Autoconf version is used.  It should be kept for consistency.
14
 
15
dnl m4_PACKAGE_VERSION is an undocumented Autoconf macro.
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dnl We use it because this fix is intended for 2.59 only.
17
dnl A feature test for the broken AC_CONFIG_SUBDIRS instead
18
dnl would be better but is tricky.
19
dnl
20
dnl Use ifdef/ifelse over m4_ifdef/m4_ifelse to be clean for 2.13.
21
dnl Redefine AC_CONFIG_SUBDIRS so aclocal pulls in this file
22
dnl when needed.
23
 
24
ifdef([m4_PACKAGE_VERSION],
25
[dnl AC_DEFUN a commonly used macro so this file is picked up.
26
m4_copy([AC_PREREQ], [_AC_PREREQ])
27
AC_DEFUN([AC_PREREQ], [frob])
28
m4_copy([_AC_PREREQ], [AC_PREREQ])
29
 
30
 
31
dnl Ensure exactly this Autoconf version is used
32
m4_ifndef([_GCC_AUTOCONF_VERSION],
33
  [m4_define([_GCC_AUTOCONF_VERSION], [2.59])])
34
 
35
dnl Test for the exact version when AC_INIT is expanded.
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dnl This allows to update the tree in steps (for testing)
37
dnl by putting
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dnl   m4_define([_GCC_AUTOCONF_VERSION], [X.Y])
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dnl in configure.ac before AC_INIT,
40
dnl without rewriting this file.
41
dnl Or for updating the whole tree at once with the definition above.
42
AC_DEFUN([_GCC_AUTOCONF_VERSION_CHECK],
43
[m4_if(m4_defn([_GCC_AUTOCONF_VERSION]),
44
  m4_defn([m4_PACKAGE_VERSION]), [],
45
  [m4_fatal([Please use exactly Autoconf ]_GCC_AUTOCONF_VERSION[ instead of ]m4_defn([m4_PACKAGE_VERSION])[.])])
46
])
47
m4_define([AC_INIT], m4_defn([AC_INIT])[
48
_GCC_AUTOCONF_VERSION_CHECK
49
])
50
 
51
m4_version_prereq([2.60],, [
52
dnl We use $ac_pwd in some of the overrides below; ensure its definition
53
m4_divert_push([PARSE_ARGS])dnl
54
ac_pwd=`pwd`
55
m4_divert_pop([PARSE_ARGS])dnl
56
])
57
 
58
 
59
m4_version_prereq([2.60],, [
60
 
61
# _AC_OUTPUT_SUBDIRS
62
# ------------------
63
# This is a subroutine of AC_OUTPUT, but it does not go into
64
# config.status, rather, it is called after running config.status.
65
m4_define([_AC_OUTPUT_SUBDIRS],
66
[
67
#
68
# CONFIG_SUBDIRS section, as fixed in confsubdir.m4.
69
#
70
if test "$no_recursion" != yes; then
71
 
72
  # Remove --cache-file and --srcdir arguments so they do not pile up.
73
  ac_sub_configure_args=
74
  ac_prev=
75
  eval "set x $ac_configure_args"
76
  shift
77
  for ac_arg
78
  do
79
    if test -n "$ac_prev"; then
80
      ac_prev=
81
      continue
82
    fi
83
    case $ac_arg in
84
    -cache-file | --cache-file | --cache-fil | --cache-fi \
85
    | --cache-f | --cache- | --cache | --cach | --cac | --ca | --c)
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      ac_prev=cache_file ;;
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    -cache-file=* | --cache-file=* | --cache-fil=* | --cache-fi=* \
88
    | --cache-f=* | --cache-=* | --cache=* | --cach=* | --cac=* | --ca=* \
89
    | --c=*)
90
      ;;
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    --config-cache | -C)
92
      ;;
93
    -srcdir | --srcdir | --srcdi | --srcd | --src | --sr)
94
      ac_prev=srcdir ;;
95
    -srcdir=* | --srcdir=* | --srcdi=* | --srcd=* | --src=* | --sr=*)
96
      ;;
97
    -prefix | --prefix | --prefi | --pref | --pre | --pr | --p)
98
      ac_prev=prefix ;;
99
    -prefix=* | --prefix=* | --prefi=* | --pref=* | --pre=* | --pr=* | --p=*)
100
      ;;
101
    *)
102
      case $ac_arg in
103
      *\'*) ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
104
      esac
105
      ac_sub_configure_args="$ac_sub_configure_args '$ac_arg'" ;;
106
    esac
107
  done
108
 
109
  # Always prepend --prefix to ensure using the same prefix
110
  # in subdir configurations.
111
  ac_arg="--prefix=$prefix"
112
  case $ac_arg in
113
  *\'*) ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
114
  esac
115
  ac_sub_configure_args="$ac_arg $ac_sub_configure_args"
116
 
117
  ac_popdir=`pwd`
118
  for ac_dir in : $subdirs; do test "x$ac_dir" = x: && continue
119
 
120
    # Do not complain, so a configure script can configure whichever
121
    # parts of a large source tree are present.
122
    test -d "$srcdir/$ac_dir" || continue
123
 
124
    AC_MSG_NOTICE([configuring in $ac_dir])
125
    AS_MKDIR_P(["$ac_dir"])
126
    _AC_SRCPATHS(["$ac_dir"])
127
 
128
    cd "$ac_dir"
129
 
130
    # Check for guested configure; otherwise get Cygnus style configure.
131
    if test -f "$ac_srcdir/configure.gnu"; then
132
      ac_sub_configure=$ac_srcdir/configure.gnu
133
    elif test -f "$ac_srcdir/configure"; then
134
      ac_sub_configure=$ac_srcdir/configure
135
    elif test -f "$ac_srcdir/configure.in"; then
136
      # This should be Cygnus configure.
137
      ac_sub_configure=$ac_aux_dir/configure
138
    else
139
      AC_MSG_WARN([no configuration information is in $ac_dir])
140
      ac_sub_configure=
141
    fi
142
 
143
    # The recursion is here.
144
    if test -n "$ac_sub_configure"; then
145
      # Make the cache file name correct relative to the subdirectory.
146
      case $cache_file in
147
      [[\\/]]* | ?:[[\\/]]* ) ac_sub_cache_file=$cache_file ;;
148
      *) # Relative path.
149
        ac_sub_cache_file=$ac_top_builddir$cache_file ;;
150
      esac
151
 
152
      AC_MSG_NOTICE([running $SHELL $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir])
153
      # The eval makes quoting arguments work.
154
      eval "\$SHELL \"\$ac_sub_configure\" $ac_sub_configure_args \
155
           --cache-file=\"\$ac_sub_cache_file\" --srcdir=\"\$ac_srcdir\"" ||
156
        AC_MSG_ERROR([$ac_sub_configure failed for $ac_dir])
157
    fi
158
 
159
    cd "$ac_popdir"
160
  done
161
fi
162
])# _AC_OUTPUT_SUBDIRS
163
])
164
 
165
m4_version_prereq([2.63],, [
166
 
167
# _AC_ARG_VAR_VALIDATE
168
# --------------------
169
# The code is the same as autoconf 2.59, but with a more lenient check
170
# on precious variables and an output of pwd that have been added in
171
# autoconf 2.62.
172
m4_define([_AC_ARG_VAR_VALIDATE],
173
[m4_divert_text([INIT_PREPARE],
174
[# Check that the precious variables saved in the cache have kept the same
175
# value.
176
ac_cache_corrupted=false
177
for ac_var in `(set) 2>&1 |
178
               sed -n 's/^ac_env_\([[a-zA-Z_0-9]]*\)_set=.*/\1/p'`; do
179
  eval ac_old_set=\$ac_cv_env_${ac_var}_set
180
  eval ac_new_set=\$ac_env_${ac_var}_set
181
  eval ac_old_val="\$ac_cv_env_${ac_var}_value"
182
  eval ac_new_val="\$ac_env_${ac_var}_value"
183
  case $ac_old_set,$ac_new_set in
184
    set,)
185
      AS_MESSAGE([error: `$ac_var' was set to `$ac_old_val' in the previous run], 2)
186
      ac_cache_corrupted=: ;;
187
    ,set)
188
      AS_MESSAGE([error: `$ac_var' was not set in the previous run], 2)
189
      ac_cache_corrupted=: ;;
190
    ,);;
191
    *)
192
      if test "x$ac_old_val" != "x$ac_new_val"; then
193
        # differences in whitespace do not lead to failure.
194
        ac_old_val_w=`echo x $ac_old_val`
195
        ac_new_val_w=`echo x $ac_new_val`
196
        if test "$ac_old_val_w" != "$ac_new_val_w"; then
197
          AS_MESSAGE([error: `$ac_var' has changed since the previous run:], 2)
198
          ac_cache_corrupted=:
199
        else
200
          AS_MESSAGE([warning: ignoring whitespace changes in `$ac_var' since the previous run:], 2)
201
          eval $ac_var=\$ac_old_val
202
        fi
203
        AS_MESSAGE([  former value:  `$ac_old_val'], 2)
204
        AS_MESSAGE([  current value: `$ac_new_val'], 2)
205
      fi;;
206
  esac
207
  # Pass precious variables to config.status.
208
  if test "$ac_new_set" = set; then
209
    case $ac_new_val in
210
dnl If you change this globbing pattern, test it on an old shell --
211
dnl it's sensitive.  Putting any kind of quote in it causes syntax errors.
212
[    *" "*|*"   "*|*[\[\]\~\#\$\^\&\*\(\)\{\}\\\|\;\<\>\?\"\']*)]
213
      ac_arg=$ac_var=`echo "$ac_new_val" | sed "s/'/'\\\\\\\\''/g"` ;;
214
    *) ac_arg=$ac_var=$ac_new_val ;;
215
    esac
216
    case " $ac_configure_args " in
217
      *" '$ac_arg' "*) ;; # Avoid dups.  Use of quotes ensures accuracy.
218
      *) ac_configure_args="$ac_configure_args '$ac_arg'" ;;
219
    esac
220
  fi
221
done
222
if $ac_cache_corrupted; then
223
  AS_MESSAGE([error: in `$ac_pwd':], 2)
224
  AS_MESSAGE([error: changes in the environment can compromise the build], 2)
225
  AS_ERROR([run `make distclean' and/or `rm $cache_file' and start over])
226
fi])dnl
227
])# _AC_ARG_VAR_VALIDATE
228
])
229
 
230
m4_version_prereq([2.63],, [
231
 
232
# AC_MSG_FAILURE(ERROR, [EXIT-STATUS = 1])
233
# ----------------------------------------
234
# This is the same code as in 2.59 and 2.61, except it also outputs pwd.
235
m4_define([AC_MSG_FAILURE],
236
[{ AS_MESSAGE([error: in `$ac_pwd':], 2)
237
AC_MSG_ERROR([$1
238
See `config.log' for more details.], [$2]); }])
239
])
240
])
241
 
242
m4_version_prereq([2.60],, [
243
dnl M4 1.6 and newer implement m4wrap using FIFO semantics, as required
244
dnl by Posix; earlier versions used LIFO semantics.  Unfortunately,
245
dnl Autoconf versions before 2.60 require those LIFO semantics, so
246
dnl make sure to give it to them.
247
m4_define([m4_wrap], [m4_ifdef([_$0_text],
248
  [m4_define([_$0_text], [$1]m4_defn([_$0_text]))],
249
  [m4_define([_$0_text], [$1])m4_builtin([m4wrap],
250
    [m4_default(m4_defn([_$0_text])m4_undefine([_$0_text]))])])])
251
])

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