编译OpenSSH

　说实话，97年使用linux开始就没有编译过openssh。使用debian时，也是apt 安装的。
1 下载最新的zlib库
http://zlib.net/
tar -zxvf zlib-1.2.3.tar.gz
cd zlib-1.2.3
make
make install

cp zlib.h zconf.h /usr/local/include
chmod 644 /usr/local/include/zlib.h /usr/local/include/zconf.h
cp libz.a /usr/local/lib
cd /usr/local/lib; chmod 755 libz.a
cd /usr/local/lib; if test -f libz.so.1.2.3; then \
rm -f libz.so libz.so.1; \
ln -s libz.so.1.2.3 libz.so; \
ln -s libz.so.1.2.3 libz.so.1; \
(ldconfig || true) >/dev/null 2>&1; \
fi
cp zlib.3 /usr/local/share/man/man3
chmod 644 /usr/local/share/man/man3/zlib.3

2 编译openssh 一定要下载portable，不要下载纯的openssh，没有configure文件
./config --sysconfdir=/etc/ssh
OpenSSH has been configured with the following options:
User binaries: /usr/local/bin
System binaries: /usr/local/sbin
Configuration files: /etc/ssh
Askpass program: /usr/local/libexec/ssh-askpass
Manual pages: /usr/local/share/man/manX
PID file: /var/run
Privilege separation chroot path: /var/empty
sshd default user PATH: /usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin
Manpage format: doc
PAM support: no
OSF SIA support: no
KerberosV support: no
SELinux support: no
Smartcard support: no
S/KEY support: no
TCP Wrappers support: no
MD5 password support: no
libedit support: no
Solaris process contract support: no
IP address in $DISPLAY hack: no
Translate v4 in v6 hack: yes
BSD Auth support: no
Random number source: OpenSSL internal ONLY

Host: i686-pc-linux-gnu
Compiler: gcc
Compiler flags: -g -O2 -Wall -Wpointer-arith -Wuninitialized -Wsign-compare -Wformat-security -fno-builtin-memset -std=gnu99
Preprocessor flags:
Linker flags:
Libraries: -lcrypto -lutil -lz -lnsl -lcrypt

make
make install
目录
SSHD=/usr/sbin/sshd