macros/iconv.m4

   1 AC_DEFUN([AC_NETATALK_CHECK_ICONV],
   2 [
   3
   4 dnl     #################################################
   5 dnl     # check for libiconv support
   6         savedcflags="$CFLAGS"
   7         savedldflags="$LDFLAGS"
   8         ICONV_CFLAGS=""
   9         ICONV_LIBS=""
  10
  11         AC_ARG_WITH(libiconv,
  12         [  --with-libiconv=BASEDIR Use libiconv in BASEDIR/lib and BASEDIR/include [[default=auto]]],
  13         [ case "$withval" in
  14           no)
  15             ;;
  16           yes)
  17             ;;
  18           *)
  19             ICONV_CFLAGS="-I$withval/include"
  20             ICONV_LIBS="-L$withval/$atalk_libname"
  21             ;;
  22           esac ],
  23           withval="no"
  24         )
  25
  26         CFLAGS="$ICONV_CFLAGS $CFLAGS"
  27         LDFLAGS="$LDFLAGS $ICONV_LIBS -liconv"
  28
  29         AC_CACHE_CHECK([for libiconv],netatalk_cv_iconv,[
  30           AC_TRY_LINK([
  31 #include <stdlib.h>
  32 #include <iconv.h>
  33 ],[
  34         iconv_t cd = iconv_open("","");
  35         iconv(cd,NULL,NULL,NULL,NULL);
  36         iconv_close(cd);
  37 ], netatalk_cv_iconv=yes, netatalk_cv_iconv=no, netatalk_cv_iconv=cross)])
  38
  39         if test x"$netatalk_cv_iconv" = x"yes"; then
  40             ICONV_LIBS="$ICONV_LIBS -liconv"
  41         else
  42 dnl         # unset C-/LDFLAGS so we can detect glibc iconv, if available
  43             CFLAGS="$savedcflags"
  44             LDFLAGS="$savedldflags"
  45             ICONV_LIBS=""
  46             ICONV_CFLAGS=""
  47             if test x"$withval" != x"no"; then
  48                 AC_MSG_ERROR([libiconv not found])
  49             fi
  50         fi
  51
  52
  53         CFLAGS_REMOVE_USR_INCLUDE(ICONV_CFLAGS)
  54         LIB_REMOVE_USR_LIB(ICONV_LIBS)
  55         AC_SUBST(ICONV_CFLAGS)
  56         AC_SUBST(ICONV_LIBS)
  57
  58 dnl     ############
  59 dnl     # check for iconv usability
  60
  61         AC_CACHE_CHECK([for working iconv],netatalk_cv_HAVE_USABLE_ICONV,[
  62                 AC_TRY_RUN([\
  63 #include <iconv.h>
  64 main() {
  65        iconv_t cd = iconv_open("ASCII", "UTF-8");
  66        if (cd == 0 || cd == (iconv_t)-1) return -1;
  67        return 0;
  68 }
  69 ], netatalk_cv_HAVE_USABLE_ICONV=yes,netatalk_cv_HAVE_USABLE_ICONV=no,netatalk_cv_HAVE_USABLE_ICONV=cross)])
  70
  71         if test x"$netatalk_cv_HAVE_USABLE_ICONV" = x"yes"; then
  72             AC_DEFINE(HAVE_USABLE_ICONV,1,[Whether to use native iconv])
  73         fi
  74
  75 dnl     ###########
  76 dnl     # check if iconv needs const
  77         if test x"$netatalk_cv_HAVE_USABLE_ICONV" = x"yes"; then
  78                 AC_CACHE_VAL(am_cv_proto_iconv, [
  79                 AC_TRY_COMPILE([\
  80 #include <stdlib.h>
  81 #include <iconv.h>
  82 extern
  83 #ifdef __cplusplus
  84 "C"
  85 #endif
  86 #if defined(__STDC__) || defined(__cplusplus)
  87 size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);
  88 #else
  89 size_t iconv();
  90 #endif
  91 ], [], am_cv_proto_iconv_arg1="", am_cv_proto_iconv_arg1="const")
  92                 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);"])
  93                 AC_DEFINE_UNQUOTED(ICONV_CONST, $am_cv_proto_iconv_arg1,
  94                         [Define as const if the declaration of iconv() needs const.])
  95         fi
  96
  97 dnl     ###########
  98 dnl     # check if (lib)iconv supports UCS-2-INTERNAL
  99         if test x"$netatalk_cv_HAVE_USABLE_ICONV" = x"yes"; then
 100             AC_CACHE_CHECK([whether iconv supports UCS-2-INTERNAL],netatalk_cv_HAVE_UCS2INTERNAL,[
 101                 AC_TRY_RUN([\
 102 #include <iconv.h>
 103 int main() {
 104        iconv_t cd = iconv_open("ASCII", "UCS-2-INTERNAL");
 105        if (cd == 0 || cd == (iconv_t)-1) return -1;
 106        return 0;
 107 }
 108 ], netatalk_cv_HAVE_UCS2INTERNAL=yes,netatalk_cv_HAVE_UCS2INTERNAL=no,netatalk_cv_HAVEUCS2INTERNAL=cross)])
 109
 110         if test x"$netatalk_cv_HAVE_UCS2INTERNAL" = x"yes"; then
 111                 AC_DEFINE(HAVE_UCS2INTERNAL,1,[Whether UCS-2-INTERNAL is supported])
 112         fi
 113         fi
 114
 115         CFLAGS="$savedcflags"
 116         LDFLAGS="$savedldflags"
 117         CPPFLAGS="$saved_CPPFLAGS"
 118
 119 ])