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| 1 # 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 Augen
ma\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, si
ze_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, $am_cv_proto_iconv_arg
1 char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);"]) |
| 174 am_cv_proto_iconv=`echo "[$]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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