--- tcsh-6.15.00/configure.in_old	2007-08-31 10:37:44.000000000 +0200
+++ tcsh-6.15.00/configure.in	2007-08-31 10:38:41.000000000 +0200
@@ -266,7 +266,8 @@
 AC_SEARCH_LIBS(tgetent, tinfo)
 AC_SEARCH_LIBS(gethostbyname, nsl)
 AC_SEARCH_LIBS(connect, socket)
-AM_ICONV
+AC_SEARCH_LIBS([iconv], [iconv], [AC_DEFINE([HAVE_ICONV], [1],
+        [Define to 1 if you have the iconv () interface])])
 
 dnl Checks for header files
 AC_CHECK_HEADERS([auth.h crypt.h inttypes.h shadow.h stdint.h utmp.h utmpx.h])