build networkmanager-strongswan for Fedora

networkmanager-strongswan.sh

# strongSwan version
ss_version="5.3.2"
nm_version="1.3.1"

mkdir -p /tmp/strongswan_build/

#sudo dnf install make automake gcc gcc-c++ kernel-devel gmp-devel openssl-devel NetworkManager-devel NetworkManager-glib-devel
sudo dnf install make gcc gcc-c++ gmp-devel openssl-devel NetworkManager-glib-devel gtk2-devel libgnomeui-devel intltool

# get the strongSwan tarball
cd /tmp/strongswan_build/
if [ ! -f ./strongswan-$ss_version.tar.bz2 ]
then
	wget http://download.strongswan.org/strongswan-$ss_version.tar.bz2
	tar xjf strongswan-$ss_version.tar.bz2
fi
cd strongswan-$ss_version

# build charon with OpenSSL/NM Plugin
./configure --sysconfdir=/etc --prefix=/usr --libexecdir=/usr/lib \
   --disable-aes --disable-des --disable-md5 --disable-sha1 --disable-sha2 \
   --disable-fips-prf --disable-gmp --enable-openssl --enable-nm --enable-agent \
   --enable-eap-gtc --enable-eap-md5 --enable-eap-mschapv2 --enable-eap-identity
make
sudo make install

# get the NetworkManager strongsSwan plugin as a tarball
cd /tmp/strongswan_build/
if [ ! -f ./NetworkManager-strongswan-$nm_version.tar.bz2 ]
then
	wget http://download.strongswan.org/NetworkManager/NetworkManager-strongswan-$nm_version.tar.bz2
	tar xjf NetworkManager-strongswan-$nm_version.tar.bz2
fi
cd NetworkManager-strongswan-$nm_version

# build the NetworkManager strongsSwan plugin
./configure --sysconfdir=/etc --prefix=/usr --libexecdir=/usr/lib/NetworkManager --with-charon=/usr/lib/ipsec/charon-nm
make
sudo make install

How do I create a new IKEv2 connection after running this?