gentoo-overlay/profiles/desc/curl_ssl.desc

# Copyright 1999-2014 Gentoo Foundation.
# Distributed under the terms of the GNU General Public License v2

# This file contains descriptions of CURL_SSL USE_EXPAND flags for net-misc/curl
# spnego - Use SPNEGO fbopenssl - to be added

axtls - Use axTLS
gnutls - Use GnuTLS
libressl - Use LibreSSL
mbedtls - Use mbed TLS
nss - Use Mozilla's Network Security Services 
openssl - Use OpenSSL
winssl - Use WinSSL (only with elibc_Winnt)