AC_SEARCH_LIBS([shm_open], [rt])
-AC_SEARCH_LIBS([iconv_open], [iconv], , [AC_MSG_FAILURE([cannot find the required iconv_open() function despite trying to link with -liconv])])
+AC_SEARCH_LIBS([iconv_open], [iconv], ,
+AC_SEARCH_LIBS([libiconv_open], [iconv], , [AC_MSG_FAILURE([cannot find the required iconv_open() function despite trying to link with -liconv])]))
AX_PTHREAD