The LIBDIR is given by "$(CC) -print-os-multi-directory", which
result in "../lib64" on X86/aarch64 host, and "./" on an openEuler
RISC-V host. Here is a temproray apporach by hardcore it for
an RISC-V host.
Signed-off-by: whoisxxx <zhangxuzhou4@huawei.com>
