Error libc-client.a: cocould not read symbols :... problem System Environment: centos x86_64 solution/usr/local/imap-2007f/lib/libc-client.a: cocould not read symbols: Bad value into the imap source directory make clean for reinstallation, delete the installation directory www.2cto.com CFLAGS = "-O3-fPIC" make lr5 PASSWDTYPE = std SSLTYPE = unix. nopwd IP = 4 so that after make, there will be no errors. There is another way to add sed strings on the Internet, because you are not familiar with this command and the original author provides errors, failed (Use this command sed-I's/^ Makefile =/Makefile =-fPIC/'makefile before make. If you know how to change it, leave a message later) then echo "set disable-plaintext nil">/etc/c-client.cf mkdir/usr/local/imap-2007f mkdir/usr/local/imap-2007f/include/mkdir/usr/local/imap-2007f/lib /chmod-R 077/usr/local/imap-2007f rm-rf/usr/local/imap-2007f/include/* www.2cto.com rm-rf/usr/local/imap-2007f/lib/* rm- rf/usr/sbin/imapd cp imapd/usr/sbin/cp c-client /*. h/usr/local/imap-2007f/include/cp c-client /*. c/usr/local/imap-2007f/lib/cp c-client/c-client.a/usr/local/imap-2007f/lib/libc-client.a author Independent Innovation