/[jscoverage]/trunk/m4/iconv.m4
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Annotation of /trunk/m4/iconv.m4

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Revision 174 - (hide annotations)
Sat Sep 20 23:27:14 2008 UTC (12 years ago) by siliconforks
File size: 6123 byte(s)
Provide better character encoding support.
1 siliconforks 174 # iconv.m4 serial AM6 (gettext-0.17)
2     dnl Copyright (C) 2000-2002, 2007 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 $INCICONV to CPPFLAGS before performing the following checks,
31     dnl because if the user has installed libiconv and not disabled its use
32     dnl via --without-libiconv-prefix, he wants to use it. The first
33     dnl AC_TRY_LINK will then fail, the second AC_TRY_LINK will succeed.
34     am_save_CPPFLAGS="$CPPFLAGS"
35     AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCICONV])
36    
37     AC_CACHE_CHECK([for iconv], am_cv_func_iconv, [
38     am_cv_func_iconv="no, consider installing GNU libiconv"
39     am_cv_lib_iconv=no
40     AC_TRY_LINK([#include <stdlib.h>
41     #include <iconv.h>],
42     [iconv_t cd = iconv_open("","");
43     iconv(cd,NULL,NULL,NULL,NULL);
44     iconv_close(cd);],
45     am_cv_func_iconv=yes)
46     if test "$am_cv_func_iconv" != yes; then
47     am_save_LIBS="$LIBS"
48     LIBS="$LIBS $LIBICONV"
49     AC_TRY_LINK([#include <stdlib.h>
50     #include <iconv.h>],
51     [iconv_t cd = iconv_open("","");
52     iconv(cd,NULL,NULL,NULL,NULL);
53     iconv_close(cd);],
54     am_cv_lib_iconv=yes
55     am_cv_func_iconv=yes)
56     LIBS="$am_save_LIBS"
57     fi
58     ])
59     if test "$am_cv_func_iconv" = yes; then
60     AC_CACHE_CHECK([for working iconv], am_cv_func_iconv_works, [
61     dnl This tests against bugs in AIX 5.1 and HP-UX 11.11.
62     am_save_LIBS="$LIBS"
63     if test $am_cv_lib_iconv = yes; then
64     LIBS="$LIBS $LIBICONV"
65     fi
66     AC_TRY_RUN([
67     #include <iconv.h>
68     #include <string.h>
69     int main ()
70     {
71     /* Test against AIX 5.1 bug: Failures are not distinguishable from successful
72     returns. */
73     {
74     iconv_t cd_utf8_to_88591 = iconv_open ("ISO8859-1", "UTF-8");
75     if (cd_utf8_to_88591 != (iconv_t)(-1))
76     {
77     static const char input[] = "\342\202\254"; /* EURO SIGN */
78     char buf[10];
79     const char *inptr = input;
80     size_t inbytesleft = strlen (input);
81     char *outptr = buf;
82     size_t outbytesleft = sizeof (buf);
83     size_t res = iconv (cd_utf8_to_88591,
84     (char **) &inptr, &inbytesleft,
85     &outptr, &outbytesleft);
86     if (res == 0)
87     return 1;
88     }
89     }
90     #if 0 /* This bug could be worked around by the caller. */
91     /* Test against HP-UX 11.11 bug: Positive return value instead of 0. */
92     {
93     iconv_t cd_88591_to_utf8 = iconv_open ("utf8", "iso88591");
94     if (cd_88591_to_utf8 != (iconv_t)(-1))
95     {
96     static const char input[] = "\304rger mit b\366sen B\374bchen ohne Augenma\337";
97     char buf[50];
98     const char *inptr = input;
99     size_t inbytesleft = strlen (input);
100     char *outptr = buf;
101     size_t outbytesleft = sizeof (buf);
102     size_t res = iconv (cd_88591_to_utf8,
103     (char **) &inptr, &inbytesleft,
104     &outptr, &outbytesleft);
105     if ((int)res > 0)
106     return 1;
107     }
108     }
109     #endif
110     /* Test against HP-UX 11.11 bug: No converter from EUC-JP to UTF-8 is
111     provided. */
112     if (/* Try standardized names. */
113     iconv_open ("UTF-8", "EUC-JP") == (iconv_t)(-1)
114     /* Try IRIX, OSF/1 names. */
115     && iconv_open ("UTF-8", "eucJP") == (iconv_t)(-1)
116     /* Try AIX names. */
117     && iconv_open ("UTF-8", "IBM-eucJP") == (iconv_t)(-1)
118     /* Try HP-UX names. */
119     && iconv_open ("utf8", "eucJP") == (iconv_t)(-1))
120     return 1;
121     return 0;
122     }], [am_cv_func_iconv_works=yes], [am_cv_func_iconv_works=no],
123     [case "$host_os" in
124     aix* | hpux*) am_cv_func_iconv_works="guessing no" ;;
125     *) am_cv_func_iconv_works="guessing yes" ;;
126     esac])
127     LIBS="$am_save_LIBS"
128     ])
129     case "$am_cv_func_iconv_works" in
130     *no) am_func_iconv=no am_cv_lib_iconv=no ;;
131     *) am_func_iconv=yes ;;
132     esac
133     else
134     am_func_iconv=no am_cv_lib_iconv=no
135     fi
136     if test "$am_func_iconv" = yes; then
137     AC_DEFINE(HAVE_ICONV, 1,
138     [Define if you have the iconv() function and it works.])
139     fi
140     if test "$am_cv_lib_iconv" = yes; then
141     AC_MSG_CHECKING([how to link with libiconv])
142     AC_MSG_RESULT([$LIBICONV])
143     else
144     dnl If $LIBICONV didn't lead to a usable library, we don't need $INCICONV
145     dnl either.
146     CPPFLAGS="$am_save_CPPFLAGS"
147     LIBICONV=
148     LTLIBICONV=
149     fi
150     AC_SUBST(LIBICONV)
151     AC_SUBST(LTLIBICONV)
152     ])
153    
154     AC_DEFUN([AM_ICONV],
155     [
156     AM_ICONV_LINK
157     if test "$am_cv_func_iconv" = yes; then
158     AC_MSG_CHECKING([for iconv declaration])
159     AC_CACHE_VAL(am_cv_proto_iconv, [
160     AC_TRY_COMPILE([
161     #include <stdlib.h>
162     #include <iconv.h>
163     extern
164     #ifdef __cplusplus
165     "C"
166     #endif
167     #if defined(__STDC__) || defined(__cplusplus)
168     size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);
169     #else
170     size_t iconv();
171     #endif
172     ], [], am_cv_proto_iconv_arg1="", am_cv_proto_iconv_arg1="const")
173     am_cv_proto_iconv="extern size_t iconv (iconv_t cd, $am_cv_proto_iconv_arg1 char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);"])
174     am_cv_proto_iconv=`echo "[$]am_cv_proto_iconv" | tr -s ' ' | sed -e 's/( /(/'`
175     AC_MSG_RESULT([$]{ac_t:-
176     }[$]am_cv_proto_iconv)
177     AC_DEFINE_UNQUOTED(ICONV_CONST, $am_cv_proto_iconv_arg1,
178     [Define as const if the declaration of iconv() needs const.])
179     fi
180     ])

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