require 'mkmf'
$LDFLAGS = "-L/usr/local/lib"
have_library("gdbm", "dbm_open") or
have_library("db", "dbm_open") or
have_library("dbm", "dbm_open")
if have_func("dbm_open")
have_func("dbm_clearerr")
create_makefile("dbm")
end