Unable to Compile?

Despite linking the latest `secp256k1`, I'm unable to compile this as-is?

```
$ make CXXFLAGS="-I../secp256k1/install/usr/local/include -L../secp256k1/install/usr/local/lib -static"
g++ -O2 -Wall -I../secp256k1/install/usr/local/include -L../secp256k1/install/usr/local/lib -static -I. contracthashtool.c stolen.cpp uint256.cpp crypto/ripemd160.cpp crypto/sha2.cpp -o contracthashtool -lsecp256k1
contracthashtool.c: In function ‘int main(int, char**)’:
contracthashtool.c:246:75: error: cannot convert ‘unsigned char*’ to ‘secp256k1_pubkey_t*’ for argument ‘2’ to ‘int secp256k1_ec_pubkey_tweak_add(const secp256k1_context_t*, secp256k1_pubkey_t*, const unsigned char*)’
if (secp256k1_ec_pubkey_tweak_add(secp256k1_ctx, keys_work[i], 33, res) == 0) {
^
contracthashtool.c:290:67: error: cannot convert ‘unsigned char*’ to ‘secp256k1_pubkey_t*’ for argument ‘2’ to ‘int secp256k1_ec_pubkey_create(const secp256k1_context_t*, secp256k1_pubkey_t*, const unsigned char*)’
if (secp256k1_ec_pubkey_create(secp256k1_ctx, pub, &len, priv, 1) != 1 || len != 33)
^
make: *** [all] Error 1
```

Seems like this needs to be pushed upstream or a target version specified?