Some change in openssl/crypto has broken libtorrent configure

[Lars Stokholm]

...I think.

I have two boxes, with relatively fresh installations of 6.1-RELEASE, 
upgraded to 6-STABLE by-the-book (/usr/src/Makefile).

Before I upgraded, I had no problems installing libtorrent from ports, 
but after the upgrade, the configure script fails. It's the same 
behavior on both machines. It fails right after checking for openssl:

...
checking for openssl... gnome-config: not found
gnome-config: not found
configure: error: Could not find openssl's crypto library
exit: Illegal number: try
exit: Illegal number: try
(crash, no error)

So I downloaded the source code
http://libtorrent.rakshasa.no/downloads/libtorrent-0.8.5.tar.gz
tried to run configure with an argument:

./configure --without-openssl

and it completed successfully. (Without that argument, it didn't.)

I'm sort of new to UNIX, new to FreeBSD and new to STABLE, so I don't 
really know where to turn with this. I thought someone in here perhaps 
knew about a change in openssl/crypto in STABLE that might cause this.
- or could guide me a step further in having this problem solved. :)
I'm not a coder btw.

Kind regards,
Lars