问题
I cannot find Add Custom Build Rule option on Version 5.0 (5A1413). Does anyone noticed it? Has it been moved somewhere else?
As a work around I am clicking "Copy to Target" on any build rule and customising it to make it custom build!!!
[ANSWER]
Build Rules -> Custom then select Editor->Add Build Rule
回答1:
With the build file selected, open the Editor menu.
This is also where the Add User-Defined Build Setting and other build setting modifications were moved to.
回答2:
Are Build Phases what you're looking for?
As a new developer in the Mac world, here's where I found it:
Open Project Navigator -> click the top item (i.e. the project item) in there.
An editor opens up with multiple tabs: General, Capabilities, Info, Build Settings, Build Phases, and Build Rules.
Then I added a new Run Script-rule and dragged it in proper place to be executed at the right time.
回答3:
Checked on XCode 9:
Select Project's Target file -> Select "Editor" in top menu -> Select "Add Build Settings" -> Then Select "Add User-Defined Settings"
Important: If 'Add User-Defined Settings' is grayed out. Then select "Build Settings" from Project Setting Tabs.
See below screenshot
来源：https://stackoverflow.com/questions/18962863/xcode-5-0-apple-where-is-add-build-rule-gone