Help compiling openvpn3

hello am trying to compile openvpn3 i have autoconf installed but i get the following error

./ line 42: autoreconf: not found

what is the FIX_UP in the wiki and how can i apply it?

i still need help with this , linux openvpn up to 2.5 stopped working with tls handshake error not only in my openwrt in all my linux machine , openvpn3 beta seems to work fine, i noticed from the windows openvpn client that it uses tlsclient_v4 witch i could not find i only fount tls client and it did not work any pointers?