sudo apt-get install libgmp-dev
git clone https://github.com/bitcoin/secp256k1.git
cd secp256k1
git checkout 6a59012f0443c625055eb6a375369c59f9320e45
./autogen.sh
./configure
make
sudo make install
Worked fine compiling on ubuntu server 14.04
https://github.com/crypto-official/cryptothis is the source code that c-cex links on the website, is this the new code?