1. Clone wallet sources
git clone https://github.com/cryptonotefoundation/cryptonotewallet.git
2. Modify CryptoNoteWallet.cmake
set(CN_PROJECT_NAME "furiouscoin")
set(CN_CURRENCY_DISPLAY_NAME "FuriousCoin")
set(CN_CURRENCY_TICKER "XFC")
3. Set symbolic link to coin sources at the same level as src. For example:
ln -s ../cryptonote cryptonote
Alternative way is to create git submodule:
git submodule add https://github.com/cryptonotefoundation/cryptonote.git cryptonote
Replace URL with git remote repository of your coin.
4. Build
mkdir build && cd build && cmake .. && make