Error: invalid option: --with-openssl

[fairsayan]

When I try to run the command
brew install --with-openssl curl required in https://github.com/meganz/sdk/blob/develop/doc/OSX.txt at line 10, I get this error:
Error: invalid option: --with-openssl

Running on OSX version 10.15.6 (Catalina)

[fairsayan]

I tried using sudo port install libcryptopp with proper configuration path (by default with MacPorts files are in /opt/local/include/cryptopp).
it finds the headers, but it fails anyway:
checking for libcryptopp... checking cryptopp/cryptlib.h usability... yes checking cryptopp/cryptlib.h presence... yes checking for cryptopp/cryptlib.h... yes checking for main in -lcryptopp... no