macros/iconv.m4

   1 AC_DEFUN([AM_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         AC_CACHE_CHECK([for working iconv],netatalk_cv_HAVE_USABLE_ICONV,[
  37                 AC_TRY_RUN([\
  38 #include <iconv.h>
  39 main() {
  40        iconv_t cd = iconv_open("MAC", "UTF8");
  41        if (cd == 0 || cd == (iconv_t)-1) return -1;
  42        return 0;
  43 }
  44 ], netatalk_cv_HAVE_USABLE_ICONV=yes,netatalk_cv_HAVE_USABLE_ICONV=no,netatalk_cv_HAVE_USABLE_ICONV=cross)])
  45
  46         if test x"$netatalk_cv_HAVE_USABLE_ICONV" = x"yes"; then
  47             AC_DEFINE(HAVE_USABLE_ICONV,1,[Whether to use native iconv])
  48         fi
  49
  50 dnl     ###########
  51 dnl     # check if iconv needs const
  52         if test x"$cv_HAVE_USABLE_ICONV" = x"yes"; then
  53                 AC_CACHE_VAL(am_cv_proto_iconv, [
  54                 AC_TRY_COMPILE([\
  55 #include <stdlib.h>
  56 #include <iconv.h>
  57 extern
  58 #ifdef __cplusplus
  59 "C"
  60 #endif
  61 #if defined(__STDC__) || defined(__cplusplus)
  62 size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);
  63 #else
  64 size_t iconv();
  65 #endif
  66 ], [], am_cv_proto_iconv_arg1="", am_cv_proto_iconv_arg1="const")
  67                 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);"])
  68                 AC_DEFINE_UNQUOTED(ICONV_CONST, $am_cv_proto_iconv_arg1,
  69                         [Define as const if the declaration of iconv() needs const.])
  70         fi
  71         CFLAGS="$savedcflags"
  72         LDFLAGS="$savedldflags"
  73
  74 ])