I can't understand what "BuildConfiguration" exactly it is

Using Swift
1

Hello. I think I should explain my situation first.
Now I have a huge one xcodeproj, and i want to split it. so, I'm trying to make local packages. and combine them into the one project.
like, my.xcodeproj = [PackageA.swift, PackageB.swift, PackageC.swift...]
and some packages need conditions like, "is it DEBUG?" or "is it RELEASE?" until now. In fact, I have more build configurations so this contexts can be added. like "is it ad-hoc?" "is it QA?"
before making local packages, I made some custom configurations and flags. furthermore I made schemes like "app-ad-hoc", "app-dev", "app-qa". and I archive and distribute matching target one by one. below json is my abstraction.

{
  "app-ad-hoc" : {
    "add-hoc-configuration": ["DEBUG", "add-hoc"]
  },
  "app-ad-hoc-qa" : {
    "add-hoc-qa-configuration": ["DEBUG", "add-hoc", "QA"]
  },
  "app-dev": {
    "dev-configuration": ["DEBUG, "DEV"]
  },
  ...
  "app-release": {
    "release-configuration": ["RELEASE"]
  }
}

so, with swift packages, I want to solve this problem as swift's compiler control statements too. like,

// PacakageA
#if DEBUG
something.isDebuggable = true
#elseif QA
something.isQA = true
#endif

If i change this flow, like inject some flags with swift, I have to codes in local packages too. I don't want to do that.
so I've tried to make custom flags in Package.swift. like,

.target(
  name: "Package",
  swiftSettings: [
    .define("DEBUG", .when(configuration: .debug)),
    .define("RELEASE", .when(configuration: .release))
  ]
),

but there are only two option .debug and .release in PackageDescription.BuildConfiguration

and also, my custom configurations are all belong to .release. so I can't understand how PackageDescription.BuildConfiguration really match to project's configuration.

Maybe you think It's not appropriate idea for swift packages. like, 'package should be independent'
I want to solve this problem, but I also really expect other ideas.
Thank you for reading. I need your help

2

If you're building on the command line with swift build, would package traits resolve your problem?

1 Like
3

Hello. really thank you for your interest and idea. Indeed, I haven't knew about package traits until you mention it. and also I'm building with Xcode.

but from your comment, I checked the difference about Xcode and SPM, that Xcode uses xcodebuild, and SPM uses swift build. and I remember that SPM is in github

for me, It's too huge to understand in an instant. but It seems Xcode's BuildConfiguration is also PackageDescription.BuildConfiguration. I don't know how but I think some ways may be existed to inject this flag. I'll look for it and reply it if i find. Thank you