macros/iconv.m4

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