How to build your wallet with the white GUI option?
Not sure what white GUI is, but if you mean traditional then add the argument -traditional to the client when running it.
Yes, I mean the traditional GUI. Can you tell me how to make it default instead of using argument? Thank you/
There isn't an option at the moment to put it in a config file, I can add it in the next version if you'd like. For now, I would recommend just placing a shortcut and using it instead.
I forgot to mention that I can build the wallet from the source code, so how to change the source code to make it default? Thank you.
In src/qt/bitcoin.cpp find and replace
GetBoolArg("-traditional")
to
true
There are 7 places to replace.