[Windows Arm64] Allow cross compilation using --target-platform option #129808

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1. loic-sharma

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   toolAffects the "flutter" command-line tool. See also t: labels.Affects the "flutter" command-line tool. See also t: labels.

   platform-windowsBuilding on or for Windows specificallyBuilding on or for Windows specifically

   a: desktopRunning on desktopRunning on desktop

   P3Issues that are less important to the Flutter projectIssues that are less important to the Flutter project

   platform-target-armTargeting an ARM-based platformTargeting an ARM-based platform

   on Jun 30, 2023
2. flutter-triage-bot

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4. cbracken

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   team-windowsOwned by the Windows platform teamOwned by the Windows platform team

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5. flutter-triage-bot

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6. flutter-triage-bot commented on Jun 6, 2024

   

   flutter-triage-botbot

   on Jun 6, 2024

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   The triaged-desktop label is irrelevant if there is no team-desktop label or fyi-desktop label.
7. cbracken

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   triaged-windowsTriaged by the Windows platform teamTriaged by the Windows platform team

   on Jun 7, 2024
8. krll-kov commented on Sep 30, 2024

   

   krll-kov

   on Sep 30, 2024

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   Are there any news/timeline on this? A lot of Windows arm laptops were released this summer, mac devs can use windows arm with parallels but it's still impossible to build x64 flutter app from an arm windows environment

   👍React with 👍10Reacted by JHubi1, kjxbyz, Piotr Rogowski, Losses Don, hmziq, Şems Turgut, Isaac Yeang, Maximilian Fornaçon, Skyler Thompson, PhD and MrPropre
9. krll-kov commented on Nov 18, 2024

   

   krll-kov

   on Nov 18, 2024

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   If anybody wonders, you can actually build a x64 flutter app on ARM mac with Parallels by installing the ARM Windows 11.

   When you open your project, go to windows/flutter/CMakeLists.txt file and change this

   # Set fallback configurations for older versions of the flutter tool.
   if (NOT DEFINED FLUTTER_TARGET_PLATFORM)
     set(FLUTTER_TARGET_PLATFORM "windows-x64")
   endif()
   

   to this (basically comment the check to force x64 builds)

   # Set fallback configurations for older versions of the flutter tool.
   # if (NOT DEFINED FLUTTER_TARGET_PLATFORM)
     set(FLUTTER_TARGET_PLATFORM "windows-x64")
   # endif()
   

   After this change apps build normally as you've built them on a default x64 machine and can be launched on any x64 pc without problems. Tested with latest m4 mac.

   (But do not forget that flutter apps require you to copy msvcp140.dll, vcruntime140.dll and vcruntime140_1.dll files into your build folder, YOU MUST NOT copy them from the ARM' Windows/System32 folder since those are ARM64X dlls with hybrid PE headers and are not meant to be used on old x64 pcs so you have to copy them from your x64 windows machine!)

   

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