| 1 |
# iconv.m4 serial AM4 (gettext-0.11.3) |
| 2 |
dnl Copyright (C) 2000-2002 Free Software Foundation, Inc. |
| 3 |
dnl This file is free software, distributed under the terms of the GNU |
| 4 |
dnl General Public License. As a special exception to the GNU General |
| 5 |
dnl Public License, this file may be distributed as part of a program |
| 6 |
dnl that contains a configuration script generated by Autoconf, under |
| 7 |
dnl the same distribution terms as the rest of that program. |
| 8 |
|
| 9 |
dnl From Bruno Haible. |
| 10 |
|
| 11 |
AC_DEFUN([AM_ICONV_LINKFLAGS_BODY], |
| 12 |
[ |
| 13 |
dnl Prerequisites of AC_LIB_LINKFLAGS_BODY. |
| 14 |
AC_REQUIRE([AC_LIB_PREPARE_PREFIX]) |
| 15 |
AC_REQUIRE([AC_LIB_RPATH]) |
| 16 |
|
| 17 |
dnl Search for libiconv and define LIBICONV, LTLIBICONV and INCICONV |
| 18 |
dnl accordingly. |
| 19 |
AC_LIB_LINKFLAGS_BODY([iconv]) |
| 20 |
]) |
| 21 |
|
| 22 |
AC_DEFUN([AM_ICONV_LINK], |
| 23 |
[ |
| 24 |
dnl Some systems have iconv in libc, some have it in libiconv (OSF/1 and |
| 25 |
dnl those with the standalone portable GNU libiconv installed). |
| 26 |
|
| 27 |
dnl Search for libiconv and define LIBICONV, LTLIBICONV and INCICONV |
| 28 |
dnl accordingly. |
| 29 |
AC_REQUIRE([AM_ICONV_LINKFLAGS_BODY]) |
| 30 |
|
| 31 |
dnl Add $INCICONV to CPPFLAGS before performing the following checks, |
| 32 |
dnl because if the user has installed libiconv and not disabled its use |
| 33 |
dnl via --without-libiconv-prefix, he wants to use it. The first |
| 34 |
dnl AC_TRY_LINK will then fail, the second AC_TRY_LINK will succeed. |
| 35 |
am_save_CPPFLAGS="$CPPFLAGS" |
| 36 |
AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCICONV]) |
| 37 |
|
| 38 |
AC_CACHE_CHECK(for iconv, am_cv_func_iconv, [ |
| 39 |
am_cv_func_iconv="no, consider installing GNU libiconv" |
| 40 |
am_cv_lib_iconv=no |
| 41 |
AC_TRY_LINK([#include <stdlib.h> |
| 42 |
#include <iconv.h>], |
| 43 |
[iconv_t cd = iconv_open("",""); |
| 44 |
iconv(cd,NULL,NULL,NULL,NULL); |
| 45 |
iconv_close(cd);], |
| 46 |
am_cv_func_iconv=yes) |
| 47 |
if test "$am_cv_func_iconv" != yes; then |
| 48 |
am_save_LIBS="$LIBS" |
| 49 |
LIBS="$LIBS $LIBICONV" |
| 50 |
AC_TRY_LINK([#include <stdlib.h> |
| 51 |
#include <iconv.h>], |
| 52 |
[iconv_t cd = iconv_open("",""); |
| 53 |
iconv(cd,NULL,NULL,NULL,NULL); |
| 54 |
iconv_close(cd);], |
| 55 |
am_cv_lib_iconv=yes |
| 56 |
am_cv_func_iconv=yes) |
| 57 |
LIBS="$am_save_LIBS" |
| 58 |
fi |
| 59 |
]) |
| 60 |
if test "$am_cv_func_iconv" = yes; then |
| 61 |
AC_DEFINE(HAVE_ICONV, 1, [Define if you have the iconv() function.]) |
| 62 |
fi |
| 63 |
if test "$am_cv_lib_iconv" = yes; then |
| 64 |
AC_MSG_CHECKING([how to link with libiconv]) |
| 65 |
AC_MSG_RESULT([$LIBICONV]) |
| 66 |
else |
| 67 |
dnl If $LIBICONV didn't lead to a usable library, we don't need $INCICONV |
| 68 |
dnl either. |
| 69 |
CPPFLAGS="$am_save_CPPFLAGS" |
| 70 |
LIBICONV= |
| 71 |
LTLIBICONV= |
| 72 |
fi |
| 73 |
AC_SUBST(LIBICONV) |
| 74 |
AC_SUBST(LTLIBICONV) |
| 75 |
]) |
| 76 |
|
| 77 |
AC_DEFUN([AM_ICONV], |
| 78 |
[ |
| 79 |
AM_ICONV_LINK |
| 80 |
if test "$am_cv_func_iconv" = yes; then |
| 81 |
AC_MSG_CHECKING([for iconv declaration]) |
| 82 |
AC_CACHE_VAL(am_cv_proto_iconv, [ |
| 83 |
AC_TRY_COMPILE([ |
| 84 |
#include <stdlib.h> |
| 85 |
#include <iconv.h> |
| 86 |
extern |
| 87 |
#ifdef __cplusplus |
| 88 |
"C" |
| 89 |
#endif |
| 90 |
#if defined(__STDC__) || defined(__cplusplus) |
| 91 |
size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft); |
| 92 |
#else |
| 93 |
size_t iconv(); |
| 94 |
#endif |
| 95 |
], [], am_cv_proto_iconv_arg1="", am_cv_proto_iconv_arg1="const") |
| 96 |
am_cv_proto_iconv="extern size_t iconv (iconv_t cd, $am_cv_proto_iconv_arg1 char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);"]) |
| 97 |
am_cv_proto_iconv=`echo "[$]am_cv_proto_iconv" | tr -s ' ' | sed -e 's/( /(/'` |
| 98 |
AC_MSG_RESULT([$]{ac_t:- |
| 99 |
}[$]am_cv_proto_iconv) |
| 100 |
AC_DEFINE_UNQUOTED(ICONV_CONST, $am_cv_proto_iconv_arg1, |
| 101 |
[Define as const if the declaration of iconv() needs const.]) |
| 102 |
fi |
| 103 |
]) |
