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         AC_ARG_WITH(libiconv,
  10         [  --with-libiconv=BASEDIR Use libiconv in BASEDIR/lib and BASEDIR/include [[default=auto]]],
  11         [ case "$withval" in
  12           no)
  13             AC_MSG_RESULT(no)
  14             ;;
  15           *)
  16             AC_MSG_RESULT(yes)
  17             CFLAGS="$CFLAGS -I$withval/include"
  18             LDFLAGS="$LDFLAGS -L$withval/lib"
  19             AC_CHECK_LIB(iconv, iconv_open, [
  20                                 ICONV_CFLAGS="-I$withval/include"
  21                                 ICONV_LIBS="-L$withval/lib -liconv"
  22             ])
  23             AC_DEFINE_UNQUOTED(WITH_LIBICONV, "${withval}",[Path to iconv])
  24             ;;
  25           esac ],
  26           AC_MSG_RESULT(no)
  27         )
  28
  29         CFLAGS_REMOVE_USR_INCLUDE(ICONV_CFLAGS)
  30         LIB_REMOVE_USR_LIB(ICONV_LIBS)
  31         AC_SUBST(ICONV_CFLAGS)
  32         AC_SUBST(ICONV_LIBS)
  33
  34 dnl     ############
  35 dnl     # check for iconv usability
  36
  37         saved_CPPFLAGS="$CPPFLAGS"
  38         CPPFLAGS="$CFLAGS $ICONV_CFLAGS $ICONV_LIBS"
  39         AC_CACHE_CHECK([for working iconv],netatalk_cv_HAVE_USABLE_ICONV,[
  40                 AC_TRY_RUN([\
  41 #include <iconv.h>
  42 main() {
  43        iconv_t cd = iconv_open("ASCII", "UTF-8");
  44        if (cd == 0 || cd == (iconv_t)-1) return -1;
  45        return 0;
  46 }
  47 ], netatalk_cv_HAVE_USABLE_ICONV=yes,netatalk_cv_HAVE_USABLE_ICONV=no,netatalk_cv_HAVE_USABLE_ICONV=cross)])
  48
  49         if test x"$netatalk_cv_HAVE_USABLE_ICONV" = x"yes"; then
  50             AC_DEFINE(HAVE_USABLE_ICONV,1,[Whether to use native iconv])
  51         fi
  52
  53 dnl     ###########
  54 dnl     # check if iconv needs const
  55         if test x"$netatalk_cv_HAVE_USABLE_ICONV" = x"yes"; then
  56                 AC_CACHE_VAL(am_cv_proto_iconv, [
  57                 AC_TRY_COMPILE([\
  58 #include <stdlib.h>
  59 #include <iconv.h>
  60 extern
  61 #ifdef __cplusplus
  62 "C"
  63 #endif
  64 #if defined(__STDC__) || defined(__cplusplus)
  65 size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);
  66 #else
  67 size_t iconv();
  68 #endif
  69 ], [], am_cv_proto_iconv_arg1="", am_cv_proto_iconv_arg1="const")
  70                 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);"])
  71                 AC_DEFINE_UNQUOTED(ICONV_CONST, $am_cv_proto_iconv_arg1,
  72                         [Define as const if the declaration of iconv() needs const.])
  73         fi
  74         CFLAGS="$savedcflags"
  75         LDFLAGS="$savedldflags"
  76         CPPFLAGS="$saved_CPPFLAGS"
  77
  78 ])