File: wctype_h.m4

package info (click to toggle)
parted 3.2-7
  • links: PTS, VCS
  • area: main
  • in suites: jessie, jessie-kfreebsd
  • size: 15,312 kB
  • ctags: 12,128
  • sloc: ansic: 68,106; sh: 18,156; makefile: 632; perl: 179; python: 45; asm: 36; sed: 16
file content (209 lines) | stat: -rw-r--r-- 6,941 bytes parent folder | download | duplicates (46)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
# wctype_h.m4 serial 18

dnl A placeholder for ISO C99 <wctype.h>, for platforms that lack it.

dnl Copyright (C) 2006-2014 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.

dnl Written by Paul Eggert.

AC_DEFUN([gl_WCTYPE_H],
[
  AC_REQUIRE([gl_WCTYPE_H_DEFAULTS])
  AC_REQUIRE([AC_PROG_CC])
  AC_REQUIRE([AC_CANONICAL_HOST])
  AC_CHECK_FUNCS_ONCE([iswcntrl])
  if test $ac_cv_func_iswcntrl = yes; then
    HAVE_ISWCNTRL=1
  else
    HAVE_ISWCNTRL=0
  fi
  AC_SUBST([HAVE_ISWCNTRL])

  AC_REQUIRE([gt_TYPE_WINT_T])
  if test $gt_cv_c_wint_t = yes; then
    HAVE_WINT_T=1
  else
    HAVE_WINT_T=0
  fi
  AC_SUBST([HAVE_WINT_T])

  gl_CHECK_NEXT_HEADERS([wctype.h])
  if test $ac_cv_header_wctype_h = yes; then
    if test $ac_cv_func_iswcntrl = yes; then
      dnl Linux libc5 has an iswprint function that returns 0 for all arguments.
      dnl The other functions are likely broken in the same way.
      AC_CACHE_CHECK([whether iswcntrl works], [gl_cv_func_iswcntrl_works],
        [
          AC_RUN_IFELSE(
            [AC_LANG_SOURCE([[
               /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be
                  included before <wchar.h>.
                  BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h>
                  must be included before <wchar.h>.  */
               #include <stddef.h>
               #include <stdio.h>
               #include <time.h>
               #include <wchar.h>
               #include <wctype.h>
               int main () { return iswprint ('x') == 0; }
            ]])],
            [gl_cv_func_iswcntrl_works=yes], [gl_cv_func_iswcntrl_works=no],
            [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <stdlib.h>
                          #if __GNU_LIBRARY__ == 1
                          Linux libc5 i18n is broken.
                          #endif]], [])],
              [gl_cv_func_iswcntrl_works="guessing yes"],
              [gl_cv_func_iswcntrl_works="guessing no"])
            ])
        ])
    fi
    HAVE_WCTYPE_H=1
  else
    HAVE_WCTYPE_H=0
  fi
  AC_SUBST([HAVE_WCTYPE_H])

  case "$gl_cv_func_iswcntrl_works" in
    *yes) REPLACE_ISWCNTRL=0 ;;
    *)    REPLACE_ISWCNTRL=1 ;;
  esac
  AC_SUBST([REPLACE_ISWCNTRL])

  if test $HAVE_ISWCNTRL = 0 || test $REPLACE_ISWCNTRL = 1; then
    dnl Redefine all of iswcntrl, ..., iswxdigit in <wctype.h>.
    :
  fi

  if test $REPLACE_ISWCNTRL = 1; then
    REPLACE_TOWLOWER=1
  else
    AC_CHECK_FUNCS([towlower])
    if test $ac_cv_func_towlower = yes; then
      REPLACE_TOWLOWER=0
    else
      AC_CHECK_DECLS([towlower],,,
        [[/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be
             included before <wchar.h>.
             BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h>
             must be included before <wchar.h>.  */
          #include <stddef.h>
          #include <stdio.h>
          #include <time.h>
          #include <wchar.h>
          #if HAVE_WCTYPE_H
          # include <wctype.h>
          #endif
        ]])
      if test $ac_cv_have_decl_towlower = yes; then
        dnl On Minix 3.1.8, the system's <wctype.h> declares towlower() and
        dnl towupper() although it does not have the functions. Avoid a
        dnl collision with gnulib's replacement.
        REPLACE_TOWLOWER=1
      else
        REPLACE_TOWLOWER=0
      fi
    fi
  fi
  AC_SUBST([REPLACE_TOWLOWER])

  if test $HAVE_ISWCNTRL = 0 || test $REPLACE_TOWLOWER = 1; then
    dnl Redefine towlower, towupper in <wctype.h>.
    :
  fi

  dnl We assume that the wctype() and iswctype() functions exist if and only
  dnl if the type wctype_t is defined in <wchar.h> or in <wctype.h> if that
  dnl exists.
  dnl HP-UX 11.00 declares all these in <wchar.h> and lacks <wctype.h>.
  AC_CACHE_CHECK([for wctype_t], [gl_cv_type_wctype_t],
    [AC_COMPILE_IFELSE(
       [AC_LANG_PROGRAM(
          [[/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be
               included before <wchar.h>.
               BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h>
               must be included before <wchar.h>.  */
            #include <stddef.h>
            #include <stdio.h>
            #include <time.h>
            #include <wchar.h>
            #if HAVE_WCTYPE_H
            # include <wctype.h>
            #endif
            wctype_t a;
          ]],
          [[]])],
       [gl_cv_type_wctype_t=yes],
       [gl_cv_type_wctype_t=no])
    ])
  if test $gl_cv_type_wctype_t = no; then
    HAVE_WCTYPE_T=0
  fi

  dnl We assume that the wctrans() and towctrans() functions exist if and only
  dnl if the type wctrans_t is defined in <wctype.h>.
  AC_CACHE_CHECK([for wctrans_t], [gl_cv_type_wctrans_t],
    [AC_COMPILE_IFELSE(
       [AC_LANG_PROGRAM(
          [[/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be
               included before <wchar.h>.
               BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h>
               must be included before <wchar.h>.  */
            #include <stddef.h>
            #include <stdio.h>
            #include <time.h>
            #include <wchar.h>
            #include <wctype.h>
            wctrans_t a;
          ]],
          [[]])],
       [gl_cv_type_wctrans_t=yes],
       [gl_cv_type_wctrans_t=no])
    ])
  if test $gl_cv_type_wctrans_t = no; then
    HAVE_WCTRANS_T=0
  fi

  dnl Check for declarations of anything we want to poison if the
  dnl corresponding gnulib module is not in use.
  gl_WARN_ON_USE_PREPARE([[
/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
   <wchar.h>.
   BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
   included before <wchar.h>.  */
#if !(defined __GLIBC__ && !defined __UCLIBC__)
# include <stddef.h>
# include <stdio.h>
# include <time.h>
# include <wchar.h>
#endif
#include <wctype.h>
    ]],
    [wctype iswctype wctrans towctrans
    ])
])

AC_DEFUN([gl_WCTYPE_MODULE_INDICATOR],
[
  dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
  AC_REQUIRE([gl_WCTYPE_H_DEFAULTS])
  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
  dnl Define it also as a C macro, for the benefit of the unit tests.
  gl_MODULE_INDICATOR_FOR_TESTS([$1])
])

AC_DEFUN([gl_WCTYPE_H_DEFAULTS],
[
  GNULIB_ISWBLANK=0;    AC_SUBST([GNULIB_ISWBLANK])
  GNULIB_WCTYPE=0;      AC_SUBST([GNULIB_WCTYPE])
  GNULIB_ISWCTYPE=0;    AC_SUBST([GNULIB_ISWCTYPE])
  GNULIB_WCTRANS=0;     AC_SUBST([GNULIB_WCTRANS])
  GNULIB_TOWCTRANS=0;   AC_SUBST([GNULIB_TOWCTRANS])
  dnl Assume proper GNU behavior unless another module says otherwise.
  HAVE_ISWBLANK=1;      AC_SUBST([HAVE_ISWBLANK])
  HAVE_WCTYPE_T=1;      AC_SUBST([HAVE_WCTYPE_T])
  HAVE_WCTRANS_T=1;     AC_SUBST([HAVE_WCTRANS_T])
  REPLACE_ISWBLANK=0;   AC_SUBST([REPLACE_ISWBLANK])
])