Unable to Compile?

Start with the secp256k1 API calls at contracthashtool.c lines 246 and 290, then compare their arguments with the headers from the linked installation. Check the Makefile and compile command for the intended library version. Done means the project compiles successfully with a specified compatible secp256k1 version or documented API target.

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?