release_unpack_macos fails on Xcode 27

flutter create new_app && cd new_app
open macos/Runner.xcworkspace/
Change MACOSX_DEPLOYMENT_TARGET to macOS 12.0 in the build setting for both the Runner target and Flutter Assemble target (this is to bypass Increase macOS minimum supported version from 10.15 to 12 to support Xcode 27 #187762).
flutter build macos

Target release_unpack_macos failed: Exception: Binary /Users/vashworth/Development/experiment/new_app/build/macos/Build/Products/Release/FlutterMacOS.framework/Versions/A/FlutterMacOS does not contain architectures "arm64 x86_64".

lipo -info:
Architectures in the fat file: /Users/vashworth/Development/experiment/new_app/build/macos/Build/Products/Release/FlutterMacOS.framework/Versions/A/FlutterMacOS are: x86_64 arm64
Failed to copy Flutter framework.
** BUILD FAILED **

When using Xcode 27, using lipo to verify multiple architectures at once now fails:

lipo /path/to/binary/ -verify_arch arm64 x86_64
lipo: -verify_arch requires exactly one input file

We need to change it to verify them individually:

flutter/packages/flutter_tools/lib/src/build_system/targets/darwin.dart

Lines 83 to 97 in 3e417c0

    
           final ProcessResult verifyResult = await environment.processManager.run(<String>[ 
        
             'lipo', 
        
             frameworkBinaryPath, 
        
             '-verify_arch', 
        
             ...archList, 
        
           ]); 
        
           if (verifyResult.exitCode != 0) { 
        
             throw Exception( 
        
               'Binary $frameworkBinaryPath does not contain architectures "$archs".\n' 
        
               '\n' 
        
               'lipo -info:\n' 
        
               '$lipoInfo', 
        
             ); 
        
           }

Fix Xcode 27 lipo verification failure for Darwin frameworks (flutter…

This thread has been automatically locked since there has not been any recent activity after it was closed. If you are still experiencing a similar issue, please open a new bug, including the output of flutter doctor -v and a minimal reproduction of the issue.

I'm re-opening this issue because a team member mentioned that it's still occurring. See this #189576 (comment) for details.

@puneetkukreja98

@puneetkukreja98 I have a cp for stable out out #189792 and to address your #189576 (comment), can you do flutter upgrade and try again,

It seems your checkout of master is outdated and the pr was merged on June 26th:

• Framework revision 3598686e42 (9 weeks ago), 2026-05-17 04:07:40 -0400

The cp has been merged, closing as fixed. Feel free to re-open if you if the issue reoccurs

@preethi0228-git

@puneetkukreja98 I have a cp for stable out out #189792 and to address your #189576 (comment), can you do flutter upgrade and try again,

It seems your checkout of master is outdated and the pr was merged on June 26th:
• Framework revision 3598686e42 (9 weeks ago), 2026-05-17 04:07:40 -0400

fyi : @preethi0228-git Could you please test it again?

Fix Xcode 27 lipo verification failure for Darwin frameworks (flutter…

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release_unpack_macos fails on Xcode 27 #188346

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	final ProcessResult verifyResult = await environment.processManager.run(<String>[
	'lipo',
	frameworkBinaryPath,
	'-verify_arch',
	...archList,
	]);

	if (verifyResult.exitCode != 0) {
	throw Exception(
	'Binary $frameworkBinaryPath does not contain architectures "$archs".\n'
	'\n'
	'lipo -info:\n'
	'$lipoInfo',
	);
	}

release_unpack_macos fails on Xcode 27 #188346

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vashworth commented on Jun 22, 2026

github-actions commented on Jul 14, 2026

puneetkukreja98 commented on Jul 21, 2026

okorohelijah commented on Jul 21, 2026

okorohelijah commented on Jul 21, 2026

puneetkukreja98 commented on Jul 22, 2026

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