Solution 1:

I'm on a similar quest! I'm working on an app right now that requires cURL and just tonight in my search I came across your post here, and what I believe to be the answer:

http://thesoftwarerogue.blogspot.com/2010/05/porting-of-libcurl-to-android-os-using.html

Unlike the link you referenced, there are several follow-up comments from other people who claim to have success also following the instructions. If you manage to get it compiled before me, and wouldn't mind sending me the library, post a follow up here! (I'm pretty new to stack overflow so I don't know if you can pm.) Hope this works out for both of us!

Solution 2:

It seems that there are projects on github that automated both openssl and libcurl for NDK build:

https://github.com/jahrome/curl-android

https://github.com/guardianproject/openssl-android

Going to use those in my own app, so I can have single library to deal with backend communication for both iOS and Android...