Mac
1. Install GitHub for Mac then fork and clone our repository. To use Git from the Terminal, see the Setting up Git and Fork a Repo articles. If you'd rather not use Git, use the 'Download ZIP' button on the right to get the source directly.
GitHub：github.com/EpicGames/UnrealEngine.git
2. Install the latest version of Xcode
3.Open your source folder in Finder and double-click on Setup.command to download binary content for the engine. You can close the Terminal window afterwards. If you downloaded the source as a .zip file, you may see a warning about it being from an unidentified developer (because .zip files on GitHub aren't digitally signed). To work around it, right-click on Setup.command, select Open, then click the Open button.
4In the same folder, double-click GenerateProjectFiles.command. It should take less than a minute to complete.
5Load the project into Xcode by double-clicking on the UE4.xcodeproj file. Select the UE4Editor - Mac for My Mac target in the title bar, then select the 'Product > Build' menu item. Compiling may take anywhere between 15 and 40 minutes, depending on your system specs.
6.After compiling finishes, select the 'Product > Run' menu item to load the editor.
QA:
Q:
A:
when i success compiling my first C++ Code,I was really excited
Unreal Official tutorials address:
FPS: docs.unrealengine.com/latest/INT/Videos/PLZlv_N0_O1gb5sdygbSiEU7hb0eomNLdq/1pmPb_TWG-8/index.html
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