[strongSwan] help with ext-auth plugin

[Amit Priyadarshi]

Hello Strongswan experts,

I am a strongswan-rookie and need some experts advice here.
I am trying to configure strongswan to use external auth script.
i followed below steps.

root at ampriyad-Inspiron-3558:/home/ampriyad/strongswan/strongswan-5.6.3#
./configure --enable-ext-auth

then i went ahead and did a
make followed by
make install.
When i lauched ipsec i got below run logs
Note that the plug in "ext-auth" did not gt loaded.

root at ampriyad-Inspiron-3558:/home/ampriyad/strongswan/strongswan-5.6.3#
ipsec start --debug-all --nofork
Starting strongSwan 5.6.3 IPsec [starter]...
Loading config setup
found netkey IPsec stack
Attempting to start charon...
00[DMN] Starting IKE charon daemon (strongSwan 5.6.3, Linux
4.15.0-29-generic, x86_64)
00[CFG] loading ca certificates from '/usr/local/etc/ipsec.d/cacerts'
00[CFG] loading aa certificates from '/usr/local/etc/ipsec.d/aacerts'
00[CFG] loading ocsp signer certificates from
'/usr/local/etc/ipsec.d/ocspcerts'
00[CFG] loading attribute certificates from '/usr/local/etc/ipsec.d/acerts'
00[CFG] loading crls from '/usr/local/etc/ipsec.d/crls'
00[CFG] loading secrets from '/usr/local/etc/ipsec.secrets'
00[CFG] no script for ext-auth script defined, disabled
00[LIB] loaded plugins: charon aes des rc2 sha2 sha1 md5 mgf1 random nonce
x509 revocation constraints pubkey pkcs1 pkcs7 pkcs8 pkcs12 pgp dnskey
sshkey pem fips-prf gmp curve25519 xcbc cmac hmac attr kernel-netlink
resolve socket-default stroke vici updown xauth-generic counters
00[JOB] spawning 16 worker threads

Please guide me on what did i miss?

-- 
Regards,
Amit Priyadarshi
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