Preparing source

• Clone pancake-swap-core

git clone git@github.com:pancakeswap/pancake-swap-core.git
cd pancake-swap-core
git checkout -b factory 3b214306770e86bc3a64e67c2b5bdb566b4e94a7
yarn install
yarn compile

• Clone pancake-swap-periphery

git clone git@github.com:pancakeswap/pancake-swap-periphery.git
cd pancake-swap-periphery
git checkout -b router d769a6d136b74fde82502ec2f9334acc1afc0732
yarn install
yarn add @uniswap/v2-core@"file:../pancake-swap-core"
yarn compile

• Clone pancake-swap-interface-v1

git clone git@github.com:pancakeswap/pancake-swap-interface-v1.git
cd pancake-swap-interface-v1
git checkout -b v1 0257017f2daaae2f67c24ded70b5829f74a01b3c
yarn install

Setup

Install contract merger: https://www.npmjs.com/package/sol-merger

npm install sol-merger -g

Prepare PancakeFactory and PancakeRouter

sol-merger pancake-swap-core/contracts/PancakeFactory.sol ./build
sol-merger pancake-swap-core/contracts/PancakePair.sol ./build
sol-merger pancake-swap-periphery/contracts/PancakeRouter01.sol ./build
sol-merger pancake-swap-periphery/contracts/PancakeRouter.sol ./build

Deploy PancakeFactory and PancakeRouter

• Access: https://remix.ethereum.org/#optimize=false&runs=200&evmVersion=null&version=soljson-v0.5.16+commit.9c3226ce.js

Deploy WBNB

• New File: WBNB.sol => Copy source from https://gist.github.com/nhancv/b0b35f16472e4998d0fd17b7a1e4f707