[arch-general] openssl cant find root certificate

[G. Schlisio]

hi list,
if i run wpa_supplicant on a eap-ttls network, it fails to set up tls 
properly:
OpenSSL: tls_connection_ca_cert - Failed to load root certificates 
error:02001002:system library:fopen:No such file or directory
where does openssl search these ca-certs, where do i get them from 
(obviously not from the ca-certificates package, this is installed and 
contains .crt instead of .pem).
isnt this supposed to work without manual intervention?
any help appreciated.
thanks
georg