Linus Walleij | 43d74db | 2011-02-09 20:03:29 +0100 | [diff] [blame] | 1 | # iconv.m4 serial 11 (gettext-0.18.1) |
| 2 | dnl Copyright (C) 2000-2002, 2007-2010 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 "$am_cv_func_iconv" = yes; then |
| 60 | AC_CACHE_CHECK([for working iconv], [am_cv_func_iconv_works], [ |
| 61 | dnl This tests against bugs in AIX 5.1, HP-UX 11.11, Solaris 10. |
| 62 | am_save_LIBS="$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 | dnl Define AM_ICONV using AC_DEFUN_ONCE for Autoconf >= 2.64, in order to |
| 155 | dnl avoid warnings like |
| 156 | dnl "warning: AC_REQUIRE: `AM_ICONV' was expanded before it was required". |
| 157 | dnl This is tricky because of the way 'aclocal' is implemented: |
| 158 | dnl - It requires defining an auxiliary macro whose name ends in AC_DEFUN. |
| 159 | dnl Otherwise aclocal's initial scan pass would miss the macro definition. |
| 160 | dnl - It requires a line break inside the AC_DEFUN_ONCE and AC_DEFUN expansions. |
| 161 | dnl Otherwise aclocal would emit many "Use of uninitialized value $1" |
| 162 | dnl warnings. |
| 163 | m4_define([gl_iconv_AC_DEFUN], |
| 164 | m4_version_prereq([2.64], |
| 165 | [[AC_DEFUN_ONCE( |
| 166 | [$1], [$2])]], |
| 167 | [[AC_DEFUN( |
| 168 | [$1], [$2])]])) |
| 169 | gl_iconv_AC_DEFUN([AM_ICONV], |
| 170 | [ |
| 171 | AM_ICONV_LINK |
| 172 | if test "$am_cv_func_iconv" = yes; then |
| 173 | AC_MSG_CHECKING([for iconv declaration]) |
| 174 | AC_CACHE_VAL([am_cv_proto_iconv], [ |
| 175 | AC_TRY_COMPILE([ |
| 176 | #include <stdlib.h> |
| 177 | #include <iconv.h> |
| 178 | extern |
| 179 | #ifdef __cplusplus |
| 180 | "C" |
| 181 | #endif |
| 182 | #if defined(__STDC__) || defined(__cplusplus) |
| 183 | size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft); |
| 184 | #else |
| 185 | size_t iconv(); |
| 186 | #endif |
| 187 | ], [], [am_cv_proto_iconv_arg1=""], [am_cv_proto_iconv_arg1="const"]) |
| 188 | am_cv_proto_iconv="extern size_t iconv (iconv_t cd, $am_cv_proto_iconv_arg1 char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);"]) |
| 189 | am_cv_proto_iconv=`echo "[$]am_cv_proto_iconv" | tr -s ' ' | sed -e 's/( /(/'` |
| 190 | AC_MSG_RESULT([ |
| 191 | $am_cv_proto_iconv]) |
| 192 | AC_DEFINE_UNQUOTED([ICONV_CONST], [$am_cv_proto_iconv_arg1], |
| 193 | [Define as const if the declaration of iconv() needs const.]) |
| 194 | fi |
| 195 | ]) |