25f5bd4f |
1 | # iconv.m4 serial 18 (gettext-0.18.2) |
2 | dnl Copyright (C) 2000-2002, 2007-2014 Free Software Foundation, Inc. |
3 | dnl This file is free software; the Free Software Foundation |
4 | dnl gives unlimited permission to copy and/or distribute it, |
5 | dnl with or without modifications, as long as this notice is preserved. |
6 | |
7 | dnl From Bruno Haible. |
8 | |
9 | AC_DEFUN([AM_ICONV_LINKFLAGS_BODY], |
10 | [ |
11 | dnl Prerequisites of AC_LIB_LINKFLAGS_BODY. |
12 | AC_REQUIRE([AC_LIB_PREPARE_PREFIX]) |
13 | AC_REQUIRE([AC_LIB_RPATH]) |
14 | |
15 | dnl Search for libiconv and define LIBICONV, LTLIBICONV and INCICONV |
16 | dnl accordingly. |
17 | AC_LIB_LINKFLAGS_BODY([iconv]) |
18 | ]) |
19 | |
20 | AC_DEFUN([AM_ICONV_LINK], |
21 | [ |
22 | dnl Some systems have iconv in libc, some have it in libiconv (OSF/1 and |
23 | dnl those with the standalone portable GNU libiconv installed). |
24 | AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles |
25 | |
26 | dnl Search for libiconv and define LIBICONV, LTLIBICONV and INCICONV |
27 | dnl accordingly. |
28 | AC_REQUIRE([AM_ICONV_LINKFLAGS_BODY]) |
29 | |
30 | dnl Add $INCICONV to CPPFLAGS before performing the following checks, |
31 | dnl because if the user has installed libiconv and not disabled its use |
32 | dnl via --without-libiconv-prefix, he wants to use it. The first |
33 | dnl AC_LINK_IFELSE will then fail, the second AC_LINK_IFELSE will succeed. |
34 | am_save_CPPFLAGS="$CPPFLAGS" |
35 | AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCICONV]) |
36 | |
37 | AC_CACHE_CHECK([for iconv], [am_cv_func_iconv], [ |
38 | am_cv_func_iconv="no, consider installing GNU libiconv" |
39 | am_cv_lib_iconv=no |
40 | AC_LINK_IFELSE( |
41 | [AC_LANG_PROGRAM( |
42 | [[ |
43 | #include <stdlib.h> |
44 | #include <iconv.h> |
45 | ]], |
46 | [[iconv_t cd = iconv_open("",""); |
47 | iconv(cd,NULL,NULL,NULL,NULL); |
48 | iconv_close(cd);]])], |
49 | [am_cv_func_iconv=yes]) |
50 | if test "$am_cv_func_iconv" != yes; then |
51 | am_save_LIBS="$LIBS" |
52 | LIBS="$LIBS $LIBICONV" |
53 | AC_LINK_IFELSE( |
54 | [AC_LANG_PROGRAM( |
55 | [[ |
56 | #include <stdlib.h> |
57 | #include <iconv.h> |
58 | ]], |
59 | [[iconv_t cd = iconv_open("",""); |
60 | iconv(cd,NULL,NULL,NULL,NULL); |
61 | iconv_close(cd);]])], |
62 | [am_cv_lib_iconv=yes] |
63 | [am_cv_func_iconv=yes]) |
64 | LIBS="$am_save_LIBS" |
65 | fi |
66 | ]) |
67 | if test "$am_cv_func_iconv" = yes; then |
68 | AC_CACHE_CHECK([for working iconv], [am_cv_func_iconv_works], [ |
69 | dnl This tests against bugs in AIX 5.1, AIX 6.1..7.1, HP-UX 11.11, |
70 | dnl Solaris 10. |
71 | am_save_LIBS="$LIBS" |
72 | if test $am_cv_lib_iconv = yes; then |
73 | LIBS="$LIBS $LIBICONV" |
74 | fi |
75 | AC_RUN_IFELSE( |
76 | [AC_LANG_SOURCE([[ |
77 | #include <iconv.h> |
78 | #include <string.h> |
79 | int main () |
80 | { |
81 | int result = 0; |
82 | /* Test against AIX 5.1 bug: Failures are not distinguishable from successful |
83 | returns. */ |
84 | { |
85 | iconv_t cd_utf8_to_88591 = iconv_open ("ISO8859-1", "UTF-8"); |
86 | if (cd_utf8_to_88591 != (iconv_t)(-1)) |
87 | { |
88 | static const char input[] = "\342\202\254"; /* EURO SIGN */ |
89 | char buf[10]; |
90 | const char *inptr = input; |
91 | size_t inbytesleft = strlen (input); |
92 | char *outptr = buf; |
93 | size_t outbytesleft = sizeof (buf); |
94 | size_t res = iconv (cd_utf8_to_88591, |
95 | (char **) &inptr, &inbytesleft, |
96 | &outptr, &outbytesleft); |
97 | if (res == 0) |
98 | result |= 1; |
99 | iconv_close (cd_utf8_to_88591); |
100 | } |
101 | } |
102 | /* Test against Solaris 10 bug: Failures are not distinguishable from |
103 | successful returns. */ |
104 | { |
105 | iconv_t cd_ascii_to_88591 = iconv_open ("ISO8859-1", "646"); |
106 | if (cd_ascii_to_88591 != (iconv_t)(-1)) |
107 | { |
108 | static const char input[] = "\263"; |
109 | char buf[10]; |
110 | const char *inptr = input; |
111 | size_t inbytesleft = strlen (input); |
112 | char *outptr = buf; |
113 | size_t outbytesleft = sizeof (buf); |
114 | size_t res = iconv (cd_ascii_to_88591, |
115 | (char **) &inptr, &inbytesleft, |
116 | &outptr, &outbytesleft); |
117 | if (res == 0) |
118 | result |= 2; |
119 | iconv_close (cd_ascii_to_88591); |
120 | } |
121 | } |
122 | /* Test against AIX 6.1..7.1 bug: Buffer overrun. */ |
123 | { |
124 | iconv_t cd_88591_to_utf8 = iconv_open ("UTF-8", "ISO-8859-1"); |
125 | if (cd_88591_to_utf8 != (iconv_t)(-1)) |
126 | { |
127 | static const char input[] = "\304"; |
128 | static char buf[2] = { (char)0xDE, (char)0xAD }; |
129 | const char *inptr = input; |
130 | size_t inbytesleft = 1; |
131 | char *outptr = buf; |
132 | size_t outbytesleft = 1; |
133 | size_t res = iconv (cd_88591_to_utf8, |
134 | (char **) &inptr, &inbytesleft, |
135 | &outptr, &outbytesleft); |
136 | if (res != (size_t)(-1) || outptr - buf > 1 || buf[1] != (char)0xAD) |
137 | result |= 4; |
138 | iconv_close (cd_88591_to_utf8); |
139 | } |
140 | } |
141 | #if 0 /* This bug could be worked around by the caller. */ |
142 | /* Test against HP-UX 11.11 bug: Positive return value instead of 0. */ |
143 | { |
144 | iconv_t cd_88591_to_utf8 = iconv_open ("utf8", "iso88591"); |
145 | if (cd_88591_to_utf8 != (iconv_t)(-1)) |
146 | { |
147 | static const char input[] = "\304rger mit b\366sen B\374bchen ohne Augenma\337"; |
148 | char buf[50]; |
149 | const char *inptr = input; |
150 | size_t inbytesleft = strlen (input); |
151 | char *outptr = buf; |
152 | size_t outbytesleft = sizeof (buf); |
153 | size_t res = iconv (cd_88591_to_utf8, |
154 | (char **) &inptr, &inbytesleft, |
155 | &outptr, &outbytesleft); |
156 | if ((int)res > 0) |
157 | result |= 8; |
158 | iconv_close (cd_88591_to_utf8); |
159 | } |
160 | } |
161 | #endif |
162 | /* Test against HP-UX 11.11 bug: No converter from EUC-JP to UTF-8 is |
163 | provided. */ |
164 | if (/* Try standardized names. */ |
165 | iconv_open ("UTF-8", "EUC-JP") == (iconv_t)(-1) |
166 | /* Try IRIX, OSF/1 names. */ |
167 | && iconv_open ("UTF-8", "eucJP") == (iconv_t)(-1) |
168 | /* Try AIX names. */ |
169 | && iconv_open ("UTF-8", "IBM-eucJP") == (iconv_t)(-1) |
170 | /* Try HP-UX names. */ |
171 | && iconv_open ("utf8", "eucJP") == (iconv_t)(-1)) |
172 | result |= 16; |
173 | return result; |
174 | }]])], |
175 | [am_cv_func_iconv_works=yes], |
176 | [am_cv_func_iconv_works=no], |
177 | [ |
178 | changequote(,)dnl |
179 | case "$host_os" in |
180 | aix* | hpux*) am_cv_func_iconv_works="guessing no" ;; |
181 | *) am_cv_func_iconv_works="guessing yes" ;; |
182 | esac |
183 | changequote([,])dnl |
184 | ]) |
185 | LIBS="$am_save_LIBS" |
186 | ]) |
187 | case "$am_cv_func_iconv_works" in |
188 | *no) am_func_iconv=no am_cv_lib_iconv=no ;; |
189 | *) am_func_iconv=yes ;; |
190 | esac |
191 | else |
192 | am_func_iconv=no am_cv_lib_iconv=no |
193 | fi |
194 | if test "$am_func_iconv" = yes; then |
195 | AC_DEFINE([HAVE_ICONV], [1], |
196 | [Define if you have the iconv() function and it works.]) |
197 | fi |
198 | if test "$am_cv_lib_iconv" = yes; then |
199 | AC_MSG_CHECKING([how to link with libiconv]) |
200 | AC_MSG_RESULT([$LIBICONV]) |
201 | else |
202 | dnl If $LIBICONV didn't lead to a usable library, we don't need $INCICONV |
203 | dnl either. |
204 | CPPFLAGS="$am_save_CPPFLAGS" |
205 | LIBICONV= |
206 | LTLIBICONV= |
207 | fi |
208 | AC_SUBST([LIBICONV]) |
209 | AC_SUBST([LTLIBICONV]) |
210 | ]) |
211 | |
212 | dnl Define AM_ICONV using AC_DEFUN_ONCE for Autoconf >= 2.64, in order to |
213 | dnl avoid warnings like |
214 | dnl "warning: AC_REQUIRE: `AM_ICONV' was expanded before it was required". |
215 | dnl This is tricky because of the way 'aclocal' is implemented: |
216 | dnl - It requires defining an auxiliary macro whose name ends in AC_DEFUN. |
217 | dnl Otherwise aclocal's initial scan pass would miss the macro definition. |
218 | dnl - It requires a line break inside the AC_DEFUN_ONCE and AC_DEFUN expansions. |
219 | dnl Otherwise aclocal would emit many "Use of uninitialized value $1" |
220 | dnl warnings. |
221 | m4_define([gl_iconv_AC_DEFUN], |
222 | m4_version_prereq([2.64], |
223 | [[AC_DEFUN_ONCE( |
224 | [$1], [$2])]], |
225 | [m4_ifdef([gl_00GNULIB], |
226 | [[AC_DEFUN_ONCE( |
227 | [$1], [$2])]], |
228 | [[AC_DEFUN( |
229 | [$1], [$2])]])])) |
230 | gl_iconv_AC_DEFUN([AM_ICONV], |
231 | [ |
232 | AM_ICONV_LINK |
233 | if test "$am_cv_func_iconv" = yes; then |
234 | AC_MSG_CHECKING([for iconv declaration]) |
235 | AC_CACHE_VAL([am_cv_proto_iconv], [ |
236 | AC_COMPILE_IFELSE( |
237 | [AC_LANG_PROGRAM( |
238 | [[ |
239 | #include <stdlib.h> |
240 | #include <iconv.h> |
241 | extern |
242 | #ifdef __cplusplus |
243 | "C" |
244 | #endif |
245 | #if defined(__STDC__) || defined(_MSC_VER) || defined(__cplusplus) |
246 | size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft); |
247 | #else |
248 | size_t iconv(); |
249 | #endif |
250 | ]], |
251 | [[]])], |
252 | [am_cv_proto_iconv_arg1=""], |
253 | [am_cv_proto_iconv_arg1="const"]) |
254 | am_cv_proto_iconv="extern size_t iconv (iconv_t cd, $am_cv_proto_iconv_arg1 char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);"]) |
255 | am_cv_proto_iconv=`echo "[$]am_cv_proto_iconv" | tr -s ' ' | sed -e 's/( /(/'` |
256 | AC_MSG_RESULT([ |
257 | $am_cv_proto_iconv]) |
258 | AC_DEFINE_UNQUOTED([ICONV_CONST], [$am_cv_proto_iconv_arg1], |
259 | [Define as const if the declaration of iconv() needs const.]) |
260 | dnl Also substitute ICONV_CONST in the gnulib generated <iconv.h>. |
261 | m4_ifdef([gl_ICONV_H_DEFAULTS], |
262 | [AC_REQUIRE([gl_ICONV_H_DEFAULTS]) |
263 | if test -n "$am_cv_proto_iconv_arg1"; then |
264 | ICONV_CONST="const" |
265 | fi |
266 | ]) |
267 | fi |
268 | ]) |