IGListKit/Package.swift
Lvv.me c9e045c942 Improve SwiftPM support (#1546)
Summary:
This diff imports and refines the PR made by cntrump on GitHub.

The PR introduces the following:

* Sample apps now use SPM instead of CocoaPods to import IGListKit.
* Adds Mac Catalyst as an example target.
* Adds C++ flags to the CocoaPods specs.
* Fixes a script issue that was discovered when regenerating the symlinks.

The PR originally aimed to remove the need for symlinked references to the IGListKit and IGListDiffKit source files, but in testing, I couldn't get it working. It's possible SPM being too strict [on where the headers can be placed to be discovered](https://forums.swift.org/t/how-do-i-specify-the-headers-directory-for-a-objc-target-in-swift-package-managers-package-swift/58531/3).

Additionally, another issue was that the original PR changed all of the `#import` statements to the the modular `import` statements, which is fine for the sample apps, but ended up breaking compatibility for any apps that had modules disabled.

## Changes in this pull request

Improve SwiftPM support:

Build module `IGListDiffKit` and `IGListKit` as Objective-C++.

module `IGListDiffKit`:
    - Source/IGListDiffKit
    - module defined in `Source/IGListDiffKit/modulemap/module.modulemap`
    - requires `-fmodules` and `-fcxx-modules`

module `IGListKit`:
    - depend on `IGListDiffKit`, use `import IGListDiffKit;`
    - Source/IGListKit
    - module defined in `Source/IGListKit/modulemap/module.modulemap`
    - requires `-fmodules` and `-fcxx-modules`

module `IGListSwiftKit`:
    - depend on `IGListKit`, use `import IGListKit`
    - Source/IGListSwiftKit

Deleted `spm/` and `scripts/generate_spm_sources_layout.sh`, it is unnecessary.

Updated `.podspec`, add `'OTHER_CFLAGS' => '-fmodules'` and `'OTHER_CPLUSPLUSFLAGS' => '-fcxx-modules'`.

Add missing swift files for `IGListSwiftKit` in `IGListKit.xcodeproj`

### How to use

Replace `#import <IGListDiffKit/IGListDiffKit.h>` with `import IGListDiffKit;`, because `IGListDiffKit.h` isn't exist in `modulemap/`, Or create a symbol link by `ln -sf ../IGListDiffKit.h` for support it ?

### Examples

Use SwiftPM for building examples.

### Checklist

- [x] All tests pass. Demo project builds and runs.
- [x] I added tests, an experiment, or detailed why my change isn't tested.
- [ ] I added an entry to the `CHANGELOG.md` for any breaking changes, enhancements, or bug fixes.
- [x] I have reviewed the [contributing guide](https://github.com/Instagram/IGListKit/blob/master/.github/CONTRIBUTING.md)

Pull Request resolved: https://github.com/Instagram/IGListKit/pull/1546

Test Plan: Test PR showing running tests: https://github.com/TimOliver/IGListKit/actions/runs/4339956050/jobs/7578047058

Reviewed By: lorixx

Differential Revision: D33592395

Pulled By: TimOliver

fbshipit-source-id: 8f7b1873f2b1c6a80908bb55b123e31bea13bb0c
2023-03-06 23:29:41 -08:00

39 lines
1 KiB
Swift

// swift-tools-version:5.0
import PackageDescription
let package = Package(
name: "IGListKit",
platforms: [ .iOS(.v9),
.tvOS(.v9),
.macOS(.v10_11),
],
products: [
.library(name: "IGListDiffKit",
type: .static,
targets: ["IGListDiffKit"]),
.library(name: "IGListKit",
type: .static,
targets: ["IGListKit"]),
.library(name: "IGListSwiftKit",
type: .static,
targets: ["IGListSwiftKit"]),
],
targets: [
.target(
name: "IGListDiffKit",
path: "spm/Sources/IGListDiffKit"
),
.target(
name: "IGListKit",
dependencies: ["IGListDiffKit"],
path: "spm/Sources/IGListKit"
),
.target(
name: "IGListSwiftKit",
dependencies: ["IGListKit"],
path: "Source/IGListSwiftKit"
),
],
cLanguageStandard: .c11,
cxxLanguageStandard: .cxx11
)