1#serial AM2
2
3dnl From Bruno Haible.
4
5AC_DEFUN([AM_ICONV],
6[
7  dnl Some systems have iconv in libc, some have it in libiconv (OSF/1 and
8  dnl those with the standalone portable GNU libiconv installed).
9
10  AC_ARG_WITH([libiconv],
11[  --with-libiconv=DIR     search for libiconv in DIR/include and DIR/lib], [
12    for dir in `echo "$withval" | tr : ' '`; do
13      if test -d $dir/include; then CPPFLAGS="$CPPFLAGS -I$dir/include"; fi
14      if test -d $dir/lib; then LDFLAGS="$LDFLAGS -L$dir/lib"; fi
15    done
16   ])
17
18  AC_CACHE_CHECK(for iconv, am_cv_func_iconv, [
19    am_cv_func_iconv="no, consider installing GNU libiconv"
20    am_cv_lib_iconv=no
21    AC_TRY_LINK([#include <stdlib.h>
22#include <iconv.h>],
23      [iconv_t cd = iconv_open("","");
24       iconv(cd,NULL,NULL,NULL,NULL);
25       iconv_close(cd);],
26      am_cv_func_iconv=yes)
27    if test "$am_cv_func_iconv" != yes; then
28      am_save_LIBS="$LIBS"
29      LIBS="$LIBS -liconv"
30      AC_TRY_LINK([#include <stdlib.h>
31#include <iconv.h>],
32        [iconv_t cd = iconv_open("","");
33         iconv(cd,NULL,NULL,NULL,NULL);
34         iconv_close(cd);],
35        am_cv_lib_iconv=yes
36        am_cv_func_iconv=yes)
37      LIBS="$am_save_LIBS"
38    fi
39  ])
40  if test "$am_cv_func_iconv" = yes; then
41    AC_DEFINE(HAVE_ICONV, 1, [Define if you have the iconv() function.])
42    AC_MSG_CHECKING([for iconv declaration])
43    AC_CACHE_VAL(am_cv_proto_iconv, [
44      AC_TRY_COMPILE([
45#include <stdlib.h>
46#include <iconv.h>
47extern
48#ifdef __cplusplus
49"C"
50#endif
51#if defined(__STDC__) || defined(__cplusplus)
52size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);
53#else
54size_t iconv();
55#endif
56], [], am_cv_proto_iconv_arg1="", am_cv_proto_iconv_arg1="const")
57      am_cv_proto_iconv="extern size_t iconv (iconv_t cd, $am_cv_proto_iconv_arg1 char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);"])
58    am_cv_proto_iconv=`echo "[$]am_cv_proto_iconv" | tr -s ' ' | sed -e 's/( /(/'`
59    AC_MSG_RESULT([$]{ac_t:-
60         }[$]am_cv_proto_iconv)
61    AC_DEFINE_UNQUOTED(ICONV_CONST, $am_cv_proto_iconv_arg1,
62      [Define as const if the declaration of iconv() needs const.])
63  fi
64  LIBICONV=
65  if test "$am_cv_lib_iconv" = yes; then
66    LIBICONV="-liconv"
67  fi
68])
69