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Minimum deployment target #14

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Vkt0r
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@Vkt0r Vkt0r commented Nov 29, 2019

Hey there 👋. Thanks for the creation of this plugin it's really promising!

This is PR is focused on fixing an issue with the minimum deployment target in the *.podspec for the generated groups. In the plugin, this was hardcoded to s.ios.deployment_target = '8.0' causing that the inclusion of libraries with a higher deployment target would generate a compilation error. You can see the example library added in the PodMergeExample (Kingfisher).

To solve this I used the platform :ios, 'x.y' declared in the Podfile. This should reflect the minimum deployment target for the Pods project. It's worth to mention that the Podfile may have been parsed using the CocoaPods Core gem already available avoiding the manual parsing and regex, with something like this:

podfile = Pod::Podfile.from_file("Podfile")
sources = podfile.sources
    
podfile.root_target_definitions.each do |target|
    platforms.append(target.platform.to_s)
end

I leave as it was to avoid possibles issues in other parts of the plugin.

So this PR can be resumed in the following:

  • Update the ios.deployment_target from the Podfile.
  • Fix a misspelling in the README.

biocross
biocross suggested changes Dec 5, 2019
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lib/cocoapods-pod-merge/Main.rb
@@ -490,6 +490,7 @@ def create_podspec(merged_framework_name, pods_to_merge, podspec_info, mixed_lan
resource_bundles = podspec_info.resource_bundles
vendored_libraries = podspec_info.vendored_libraries
swift_versions = podspec_info.swift_versions
ios_deployment_target = podfile_info.platforms.find { |platform| platform.include? "ios"}.split(',')[1]
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What happens if the Podfile does not define a platform? Will this be able to get a default value?

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That's a very valid question! By default Cocoapods provide a default in case that one is not specified:

CocoaPods provides a default deployment target if one is not specified. The current default values are 4.3 for iOS, 10.6 for OS X, 9.0 for tvOS and 2.0 for watchOS.

Nevertheless, in this specific case, we should provide a default one in the case that is not specified in the Podfile. Let's do that of course!

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Uhmm ran some experiments and one thing emerged. If I delete the MergedPods folder and run bundle exec pod install Cocoapods would raise an exception like the following in case the platform is not set in the Podfile:

It is necessary to specify the platform in the Podfile if not integrating.

If the project was integrated it already I think we're good if the platform is not specified.

The other case is when once it was integrated we comment it out the platform in the Podfile and run bundle exec pod install and Cocoapods would try to set a default platform target version for the Pods.xcodeproj like this:

[!] Automatically assigning platform `iOS` with version `11.0` on target `PodMergeExample` because no platform was specified. Please specify a platform for this target in your Podfile. See `https://guides.cocoapods.org/syntax/podfile.html#platform`.

Let me know your thoughts about it.

lib/cocoapods-pod-merge/Main.rb
@@ -334,7 +334,7 @@ def merge(merged_framework_name, group_contents, podfile_info)

# Create the local podspec
Pod::UI.puts "\tCreating Podspec for the merged framework".magenta
create_podspec(merged_framework_name, pods_to_merge, PodspecInfo.new(frameworks.uniq, prefix_header_contents.uniq, private_header_files.uniq, resources.uniq, script_phases.uniq, compiler_flags.uniq, libraries.uniq, prepare_command.uniq, resource_bundles, vendored_libraries.uniq, swift_version), mixed_language_group)
create_podspec(merged_framework_name, pods_to_merge, PodspecInfo.new(frameworks.uniq, prefix_header_contents.uniq, private_header_files.uniq, resources.uniq, script_phases.uniq, compiler_flags.uniq, libraries.uniq, prepare_command.uniq, resource_bundles, vendored_libraries.uniq, swift_version), mixed_language_group, podfile_info)
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Where is thispodfile_info being created? 🤔

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@Vkt0r Vkt0r Dec 8, 2019 •
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Oh, this was created in this line

cocoapods-pod-merge/lib/cocoapods-pod-merge/Main.rb

Line 49 in c9830f8

podfile_info = read_podfile
I only passed it to be able to extract the deployment target.

PodMergeExample/Podfile.lock
@@ -13,7 +13,7 @@ DEPENDENCIES:
- UI (from `MergedPods/UI`)

SPEC REPOS:
https://cdn.cocoapods.org/:
trunk:
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Do we need this change? I think we can continue to use the new Cocoapods CDN

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Uhmm weird, I've used the latest Cocoapods version so it should be using the CDN now. I'll check that.

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We're good with trunk. Take a look at this closed issue CocoaPods/CocoaPods#9190.

@biocross
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biocross commented Dec 5, 2019

Thank you for your PR @Vkt0r!

I think reading the Podfile for the deployment target is a very nice! And thank you for the idea of reading the Podfile using Cocoapods Core, I should migrate some more code inside the plugin to use this and get rid my crazy regex 😂!

I've just left a few comments to better understand this PR :)

@Vkt0r
Fix a misspelling in the README
5092d1f
@Vkt0r
Update the ios.deployment_target from the Podfile
2ced8a4 
The `ios.deployment_target` was set to a default value causing that pods with a minimum deployment target greater than iOS 8 were throwing errors.
@Vkt0r
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Vkt0r commented Nov 3, 2020

@biocross I rebased this PR for the latest changes. Can you please continue? Thanks

@M4kxjci M4kxjci linked an issue May 7, 2022 that may be closed by this pull request
int #29
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