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.
11 AC_DEFUN([AM_ICONV_LINKFLAGS_BODY],
13 dnl Prerequisites of AC_LIB_LINKFLAGS_BODY.
14 AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
15 AC_REQUIRE([AC_LIB_RPATH])
17 dnl Search for libiconv and define LIBICONV, LTLIBICONV and INCICONV
19 AC_LIB_LINKFLAGS_BODY([iconv])
22 AC_DEFUN([AM_ICONV_LINK],
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).
27 dnl Search for libiconv and define LIBICONV, LTLIBICONV and INCICONV
29 AC_REQUIRE([AM_ICONV_LINKFLAGS_BODY])
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], [$INCICONV])
38 AC_CACHE_CHECK(for iconv, am_cv_func_iconv, [
39 am_cv_func_iconv="no, consider installing GNU libiconv"
41 AC_TRY_LINK([#include <stdlib.h>
43 [iconv_t cd = iconv_open("","");
44 iconv(cd,NULL,NULL,NULL,NULL);
47 if test "$am_cv_func_iconv" != yes; then
49 LIBS="$LIBS $LIBICONV"
50 AC_TRY_LINK([#include <stdlib.h>
52 [iconv_t cd = iconv_open("","");
53 iconv(cd,NULL,NULL,NULL,NULL);
60 if test "$am_cv_func_iconv" = yes; then
61 AC_DEFINE(HAVE_ICONV, 1, [Define if you have the iconv() function.])
63 if test "$am_cv_lib_iconv" = yes; then
64 AC_MSG_CHECKING([how to link with libiconv])
65 AC_MSG_RESULT([$LIBICONV])
67 dnl If $LIBICONV didn't lead to a usable library, we don't need $INCICONV
69 CPPFLAGS="$am_save_CPPFLAGS"
80 if test "$am_cv_func_iconv" = yes; then
81 AC_MSG_CHECKING([for iconv declaration])
82 AC_CACHE_VAL(am_cv_proto_iconv, [
90 #if defined(__STDC__) || defined(__cplusplus)
91 size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);
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.])