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$withval/lib"
  19             AC_CHECK_LIB(iconv, iconv_open, [
  20                                 if test "$withval" != "/usr" && test "$withval" != ""; then
  21                                     ICONV_CFLAGS="-I$withval/include"
  22                                     ICONV_LIBS ="-L$withval/lib"
  23                                 fi
  24                                 ICONV_LIBS="$ICONV_LIBS -liconv"
  25                         ])
  26             AC_DEFINE_UNQUOTED(WITH_LIBICONV, "${withval}",[Path to iconv])
  27             ;;
  28           esac ],
  29           AC_MSG_RESULT(no)
  30         )
  31
  32         CFLAGS_REMOVE_USR_INCLUDE(ICONV_CFLAGS)
  33         LIB_REMOVE_USR_LIB(ICONV_LIBS)
  34         AC_SUBST(ICONV_CFLAGS)
  35         AC_SUBST(ICONV_LIBS)
  36
  37 dnl     ############
  38 dnl     # check for iconv usability
  39         AC_CACHE_CHECK([for working iconv],netatalk_cv_HAVE_USABLE_ICONV,[
  40                 AC_TRY_RUN([
  41         #include <iconv.h>
  42         main() {
  43                iconv_t cd = iconv_open("MAC", "UTF8");
  44                if (cd == 0 || cd == (iconv_t)-1) return -1;
  45                return 0;
  46         }
  47         ], netatalk_cv_HAVE_USABLE_ICONV=yes,netatalk_cv_HAVE_USABLE_ICONV=no,netatalk_cv_HAVE_USABLE_ICONV=cross)])
  48
  49         if test x"$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"$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
  77 ])