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