Linux, 2.6.8.1 (Slackware-current) + GCC-3.4.2
make[1]: Entering directory `/home/jpiszcz/lftp-3.0.10/src'
/bin/sh ../libtool --silent --mode=link gcc -O2 -Wall -Wwrite-strings -Woverloaded-virtual -fno-exceptions -fno-rtti -fno-implement-inlines -Winline -s -o lftp -export-dynamic lftp.o complete.o lftp_rl.o getdate.o liblftp-jobs.la liblftp-tasks.la liblftp-pty.la liblftp-network.la proto-ftp.la proto-http.la proto-file.la proto-fish.la proto-sftp.la cmd-mirror.la cmd-sleep.la -lreadline ../lib/liblib.a -lssl -lcrypto -lsocks5 -lutil -lcurses -lresolv -ldl -lsupc++
/vapp/lib/libsocks5.a(addr.o)(.text+0xf5): In function `lsName2Port':
: undefined reference to `__ctype_b'
/vapp/lib/libsocks5.a(log.o)(.text+0x578): In function `S5LogStart':
: undefined reference to `__ctype_b'
/vapp/lib/libsocks5.a(conf.o)(.text+0x56): In function `ProxyHandler':
: undefined reference to `__ctype_b'
/vapp/lib/libsocks5.a(conf.o)(.text+0x330): In function `ProxyHandler':
: undefined reference to `__ctype_b'
/vapp/lib/libsocks5.a(upwd.o)(.text+0x710): In function `lsPasswdSrvAuth':
: undefined reference to `__ctype_b'
/vapp/lib/libsocks5.a(upwd.o)(.text+0x762): more undefined references to `__ctype_b' follow
collect2: ld returned 1 exit status
make[1]: *** [lftp] Error 1
make[1]: Leaving directory `/home/jpiszcz/lftp-3.0.10/src'
