--- configure.ac.orig	2013-02-10 11:38:45 UTC
+++ configure.ac
@@ -30,7 +30,7 @@ dnl 
 case "${host_os}" in 
  freebsd*) 
    echo "os = freebsd"
-   AC_DEFINE(ICONV_CONST, const, "iconv_const")
+   AC_DEFINE(ICONV_CONST, , "iconv_const")
    AC_DEFINE(USE_MKTIME, , "use mktime")
    ;;
  solaris*)