wget https://github.com/OpenVPN/openvpn/archive/v2.4.6.tar.gz

tar -zxvf v2.4.6.tar.gz

cd openvpn*

apt-get update

apt-get install automake libssl libssl-dev make gcc g++

 

### lzo

wget  https://launchpad.net/ubuntu/+archive/primary/+sourcefiles/lzo2/2.08-1.2/lzo2_2.08.orig.tar.gz

tar lzo*.tar.gz

cd lzo*

./configure

make 

make install

 

###libtoolize

libtoolize --automake --copy --debug --force

 

#####openvpn

cd openvpn*

aclocal

autoconf

autoheader

automake --add-missing

./configure

make

make install 

 

###some errors 

1. configure.ac:395: error: required file './ltmain.sh' not found.

 solve:    

libtoolize --automake --copy --debug --force