Fix the function call

[Alf71]

Open the file secp256k1_lib.cpp and go to line 187. Change:
cpp

pk = Secp256K1::DecodePrivateKey2(wif);

to:
cpp

pk = Secp256K1::DecodePrivateKey(wif);

Also check the function signature:

Looking at the header, the function signature is:
cpp

static Int DecodePrivateKey(char *key, bool *compressed);

It expects a second parameter bool *compressed to return whether the key is compressed. You'll need to update the function call to match this signature.

In secp256k1_lib.cpp, find the wif_to_privatekey function and modify it:
cpp

void wif_to_privatekey(char* wif, unsigned char* pk) {
bool compressed;
Int privKey = Secp256K1::DecodePrivateKey(wif, &compressed);
privKey.Get32Bytes(pk);
}

You may also want to handle the compressed flag if needed for your application.

After making these changes, run make again and it should compile successfully.

[AlexanderKud]

This requires no fixing.
Just forgot to update the secp256k1 directory files.
And since this is an open-source project feel free to change it the way you want.