Setting SWIFT_OPTIMIZATION_LEVEL by pod_target_xcconfig, can't update.

[RbBtSn0w]

• [ ✅] I've read and understood the CONTRIBUTING guidelines and have done my best effort to follow.

Report

What did you do?

ℹ Please replace these two lines with what you did.
e.g. Run pod install

s.pod_target_xcconfig = {
    'GCC_OPTIMIZATION_LEVEL[config=Release]' => 's',
    'SWIFT_OPTIMIZATION_LEVEL[config=Release]' => '-Osize',
  }

and Run pod install

What did you expect to happen?

the SWIFT_OPTIMIZATION_LEVEL is working by pod_target_xcconfig

ℹ Please replace these two lines with what you expected to happen.
e.g. Install all pod dependencies correctly.

What happened instead?

ℹ Please replace these two lines with of what happened instead.
e.g. Pod A is missing the subspec B for target C.

SWIFT_OPTIMIZATION_LEVEL The RESOLVED value is the Project value, not the config.file

CocoaPods Environment

ℹ Please replace these two lines with the output of pod env.
e.g. via pod env | pbcopy

Stack

   CocoaPods : 1.15.2
        Ruby : ruby 3.3.0 (2023-12-25 revision 5124f9ac75) [arm64-darwin22]
    RubyGems : 3.5.4
        Host : macOS 13.6.5 (22G621)
       Xcode : 15.2 (15C500b)
         Git : git version 2.39.3 (Apple Git-145)
Ruby lib dir : /opt/homebrew/Cellar/ruby/3.3.0/lib
Repositories : mirror.internal - file system
               specs.cocoapods - file system
               specs.internal - file system
               trunk - CDN - https://cdn.cocoapods.org/

Installation Source

Executable Path: /opt/homebrew/Cellar/cocoapods/1.15.2/libexec/bin/pod

Plugins

cocoapods-deintegrate : 1.0.5
cocoapods-plugins     : 1.0.0
cocoapods-search      : 1.0.1
cocoapods-trunk       : 1.6.0
cocoapods-try         : 1.2.0

Podfile

use_frameworks!

platform :ios, '10.0'

target 'Optimize_Example' do
  pod 'Optimize', :path => '../'

  target 'Optimize_Tests' do
    inherit! :search_paths

    pod 'FBSnapshotTestCase' , '~> 2.1.4'
  end
end

Project that demonstrates the issue

ℹ Please link to a project we can download that reproduces the issue.
You can delete this section if your issue is unrelated to build problems,
i.e. it's only an issue with CocoaPods the tool.

use pod lib create any project, and insert content on the podspec.

s.pod_target_xcconfig = {
    'GCC_OPTIMIZATION_LEVEL[config=Release]' => 's',
    'SWIFT_OPTIMIZATION_LEVEL[config=Release]' => '-Osize',
  }

try pod update again, check the SWIFT_OPTIMIZATION_LEVEL's value

[RbBtSn0w]

workaround,

  s.pod_target_xcconfig = {
    'GCC_OPTIMIZATION_LEVEL[config=Release]' => 's',
    'SWIFT_OPTIMIZATION_LEVEL' => '-Osize',
  }

don't set SWIFT_OPTIMIZATION_LEVEL on env