/lib64/libc.so.6: version `GLIBC_2.33'

[root@centos7 rams2]#  riscv64-unknown-linux-gnu-objdump -x  usr/sbin/tcpdump   | grep NEEDED
  NEEDED               libcrypto.so.1.1
  NEEDED               libpcap.so.0.8
  NEEDED               libc.so.6
  NEEDED               ld-linux-riscv64-lp64d.so.1

# tcpdump -h
tcpdump: /lib64/libc.so.6: version `GLIBC_2.33' not found (required by /usr/lib/libcrypto.so.1.1)
tcpdump: /lib64/libc.so.6: version `GLIBC_2.33' not found (required by /usr/lib/libdbus-1.so.3)
tcpdump: /lib64/libc.so.6: version `GLIBC_2.32' not found (required by /usr/lib/libsystemd.so.0)
tcpdump: /lib64/libc.so.6: version `GLIBC_2.33' not found (required by /usr/lib/libsystemd.so.0)
tcpdump: /lib64/libc.so.6: version `GLIBC_2.30' not found (required by /usr/lib/libsystemd.so.0)
tcpdump: /lib64/libc.so.6: version `GLIBC_2.32' not found (required by /usr/lib/liblzma.so.5)
tcpdump: /lib64/libc.so.6: version `GLIBC_2.33' not found (required by /usr/lib/libcap.so.2)
tcpdump: /lib64/libc.so.6: version `GLIBC_2.33' not found (required by /usr/lib/libgcrypt.so.20)
# 

原来libc.so.6有问题

[root@centos7 rams2]# strings lib64/libc.so.6 | grep GLIBC
GLIBC_2.27
GLIBC_2.28
GLIBC_PRIVATE
[root@centos7 rams2]# 

用这个版本的替换

root@ubuntu:/home/ubuntu/data2# strings ./usr/lib/riscv64-linux-gnu/libc.so.6 | grep GLIBC
GLIBC_2.27
GLIBC_2.28
GLIBC_2.29
GLIBC_2.30
GLIBC_2.32
GLIBC_2.33
GLIBC_PRIVATE
GNU C Library (Ubuntu GLIBC 2.33-0ubuntu5) release release version 2.33.

 ./configure --prefix=/usr/local/tcpdump --host=riscv CC=riscv64-unknown-linux-gnu-gcc  --with-system-libpcap=../usr/lib/libpcap.so.1.10.0