$cflags.=" -DOPENSSL_NO_SSL2" if $no_ssl2;
$cflags.=" -DOPENSSL_NO_SSL3" if $no_ssl3;
$cflags.=" -DOPENSSL_NO_TLSEXT" if $no_tlsext;
$cflags.=" -DOPENSSL_NO_SSL2" if $no_ssl2;
$cflags.=" -DOPENSSL_NO_SSL3" if $no_ssl3;
$cflags.=" -DOPENSSL_NO_TLSEXT" if $no_tlsext;