IGListKit/.gitignore
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

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.DS_Store
Podfile.lock
Gemfile.lock
# Xcode
#
# gitignore contributors: remember to update Global/Xcode.gitignore, Objective-C.gitignore & Swift.gitignore
## Build generated
build/
DerivedData/
## Various settings
*.pbxuser
!default.pbxuser
*.mode1v3
!default.mode1v3
*.mode2v3
!default.mode2v3
*.perspectivev3
!default.perspectivev3
xcuserdata/
## Other
*.moved-aside
*.xcuserstate
## Obj-C/Swift specific
*.hmap
*.ipa
*.dSYM.zip
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## Docs
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## Playgrounds
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playground.xcworkspace
# Swift Package Manager
#
# Add this line if you want to avoid checking in source code from Swift Package Manager dependencies.
# Packages/
.build/
# CocoaPods
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# We recommend against adding the Pods directory to your .gitignore. However
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Pods/
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# Carthage
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