"flutter run" fails with "Target aot_assembly_release failed: Exception: release/profile builds are only supported for physical devices. attempted to build for simulator." #85643

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1. jmagman commented on Jun 30, 2021

   

   jmagman

   on Jun 30, 2021

   Last edited by jmagman

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   User is running straight flutter run -v which is choosing an iOS simulator. However, even though the Configuration is Debug (export CONFIGURATION\=Debug) it's passing -dBuildMode=release to assemble:

   /Users/adeel/flutter/bin/flutter --verbose assemble --no-version-check --output=/Users/adeel/projects/misoapp/build/ios/Debug-iphonesimulator/ -dTargetPlatform=ios
                  -dTargetFile=/Users/adeel/projects/misoapp/lib/main.dart -dBuildMode=release -dIosArchs=x86_64
                  -dSdkRoot=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator14.5.sdk -dSplitDebugInfo= -dTreeShakeIcons=false
   -dTrackWidgetCreation=true
                  -dDartObfuscation=false -dEnableBitcode= -dCodesignIdentity=- --ExtraGenSnapshotOptions= --DartDefines=RkxVVFRFUl9XRUJfQVVUT19ERVRFQ1Q9dHJ1ZQ== --ExtraFrontEndOptions=
                  release_ios_bundle_flutter_assets
   

   Failure is:

   [   +7 ms] Target aot_assembly_release failed: Exception: release/profile builds are only supported for physical devices. attempted to build for simulator.
   
2. jmagman commented on Jun 30, 2021

   

   jmagman

   on Jun 30, 2021

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   Odd, I really wouldn't have expected this problem unless FLUTTER_BUILD_MODE is set, which it's not.

   flutter/packages/flutter_tools/bin/xcode_backend.sh

   Lines 101 to 107 in d79295a

   	local build_mode="$(ParseFlutterBuildMode)"
   	local artifact_variant="unknown"
   	case "$build_mode" in
   	release ) artifact_variant="ios-release";;
   	profile ) artifact_variant="ios-profile";;
   	debug ) artifact_variant="ios";;
   	esac

   
   

   flutter/packages/flutter_tools/bin/xcode_backend.sh

   Lines 41 to 50 in d79295a

   	ParseFlutterBuildMode() {
   	# Use FLUTTER_BUILD_MODE if it's set, otherwise use the Xcode build configuration name
   	# This means that if someone wants to use an Xcode build config other than Debug/Profile/Release,
   	# they _must_ set FLUTTER_BUILD_MODE so we know what type of artifact to build.
   	local build_mode="$(echo "${FLUTTER_BUILD_MODE:-${CONFIGURATION}}" | tr "[:upper:]" "[:lower:]")"
   	case "$build_mode" in
   	*release*) build_mode="release";;
   	*profile*) build_mode="profile";;
   	*debug*) build_mode="debug";;

   
   

   flutter/packages/flutter_tools/bin/xcode_backend.sh

   Line 183 in d79295a

   -dBuildMode=${build_mode} \

   @realadeel What's the output of:

   $ cd /Users/adeel/flutter
   $ git status
   

   Can you also attach /Users/adeel/flutter/packages/flutter_tools/bin/xcode_backend.sh?
3. jmagman

   added

   waiting for responseThe Flutter team cannot make further progress on this issue until the original reporter respondsThe Flutter team cannot make further progress on this issue until the original reporter responds

   on Jun 30, 2021
4. realadeel commented on Jun 30, 2021

   

   realadeel

   on Jun 30, 2021

   Last edited by jmagman

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   @jmagman
   Adeels-MacBook-Pro-2:flutter adeel$ git status
   On branch stable
   Your branch is up to date with 'origin/stable'.

   nothing to commit, working tree clean

   ---

   #!/usr/bin/env bash
   # Copyright 2014 The Flutter Authors. All rights reserved.
   # Use of this source code is governed by a BSD-style license that can be
   # found in the LICENSE file.
   
   # Exit on error
   set -e
   
   RunCommand() {
     if [[ -n "$VERBOSE_SCRIPT_LOGGING" ]]; then
       echo "♦ $*"
     fi
     "$@"
     return $?
   }
   
   # When provided with a pipe by the host Flutter build process, output to the
   # pipe goes to stdout of the Flutter build process directly.
   StreamOutput() {
     if [[ -n "$SCRIPT_OUTPUT_STREAM_FILE" ]]; then
       echo "$1" > $SCRIPT_OUTPUT_STREAM_FILE
     fi
   }
   
   EchoError() {
     echo "$@" 1>&2
   }
   
   AssertExists() {
     if [[ ! -e "$1" ]]; then
       if [[ -h "$1" ]]; then
         EchoError "The path $1 is a symlink to a path that does not exist"
       else
         EchoError "The path $1 does not exist"
       fi
       exit -1
     fi
     return 0
   }
   
   ParseFlutterBuildMode() {
     # Use FLUTTER_BUILD_MODE if it's set, otherwise use the Xcode build configuration name
     # This means that if someone wants to use an Xcode build config other than Debug/Profile/Release,
     # they _must_ set FLUTTER_BUILD_MODE so we know what type of artifact to build.
     local build_mode="$(echo "${FLUTTER_BUILD_MODE:-${CONFIGURATION}}" | tr "[:upper:]" "[:lower:]")"
   
     case "$build_mode" in
       *release*) build_mode="release";;
       *profile*) build_mode="profile";;
       *debug*) build_mode="debug";;
       *)
         EchoError "========================================================================"
         EchoError "ERROR: Unknown FLUTTER_BUILD_MODE: ${build_mode}."
         EchoError "Valid values are 'Debug', 'Profile', or 'Release' (case insensitive)."
         EchoError "This is controlled by the FLUTTER_BUILD_MODE environment variable."
         EchoError "If that is not set, the CONFIGURATION environment variable is used."
         EchoError ""
         EchoError "You can fix this by either adding an appropriately named build"
         EchoError "configuration, or adding an appropriate value for FLUTTER_BUILD_MODE to the"
         EchoError ".xcconfig file for the current build configuration (${CONFIGURATION})."
         EchoError "========================================================================"
         exit -1;;
     esac
     echo "${build_mode}"
   }
   
   BuildApp() {
     local project_path="${SOURCE_ROOT}/.."
     if [[ -n "$FLUTTER_APPLICATION_PATH" ]]; then
       project_path="${FLUTTER_APPLICATION_PATH}"
     fi
   
     local target_path="lib/main.dart"
     if [[ -n "$FLUTTER_TARGET" ]]; then
       target_path="${FLUTTER_TARGET}"
     fi
   
     local derived_dir="${SOURCE_ROOT}/Flutter"
     if [[ -e "${project_path}/.ios" ]]; then
       derived_dir="${project_path}/.ios/Flutter"
     fi
   
     local bundle_sksl_path=""
     if [[ -n "$BUNDLE_SKSL_PATH" ]]; then
       bundle_sksl_path="-iBundleSkSLPath=${BUNDLE_SKSL_PATH}"
     fi
   
     # Default value of assets_path is flutter_assets
     local assets_path="flutter_assets"
     # The value of assets_path can set by add FLTAssetsPath to
     # AppFrameworkInfo.plist.
     if FLTAssetsPath=$(/usr/libexec/PlistBuddy -c "Print :FLTAssetsPath" "${derived_dir}/AppFrameworkInfo.plist" 2>/dev/null); then
       if [[ -n "$FLTAssetsPath" ]]; then
         assets_path="${FLTAssetsPath}"
       fi
     fi
   
     # Use FLUTTER_BUILD_MODE if it's set, otherwise use the Xcode build configuration name
     # This means that if someone wants to use an Xcode build config other than Debug/Profile/Release,
     # they _must_ set FLUTTER_BUILD_MODE so we know what type of artifact to build.
     local build_mode="$(ParseFlutterBuildMode)"
     local artifact_variant="unknown"
     case "$build_mode" in
       release ) artifact_variant="ios-release";;
       profile ) artifact_variant="ios-profile";;
       debug ) artifact_variant="ios";;
     esac
   
     # Warn the user if not archiving (ACTION=install) in release mode.
     if [[ "$ACTION" == "install" && "$build_mode" != "release" ]]; then
       echo "warning: Flutter archive not built in Release mode. Ensure FLUTTER_BUILD_MODE \
   is set to release or run \"flutter build ios --release\", then re-run Archive from Xcode."
     fi
   
     local framework_path="${FLUTTER_ROOT}/bin/cache/artifacts/engine/${artifact_variant}"
     local flutter_engine_flag=""
     local local_engine_flag=""
     local flutter_framework="${framework_path}/Flutter.xcframework"
   
     if [[ -n "$FLUTTER_ENGINE" ]]; then
       flutter_engine_flag="--local-engine-src-path=${FLUTTER_ENGINE}"
     fi
   
     if [[ -n "$LOCAL_ENGINE" ]]; then
       if [[ $(echo "$LOCAL_ENGINE" | tr "[:upper:]" "[:lower:]") != *"$build_mode"* ]]; then
         EchoError "========================================================================"
         EchoError "ERROR: Requested build with Flutter local engine at '${LOCAL_ENGINE}'"
         EchoError "This engine is not compatible with FLUTTER_BUILD_MODE: '${build_mode}'."
         EchoError "You can fix this by updating the LOCAL_ENGINE environment variable, or"
         EchoError "by running:"
         EchoError "  flutter build ios --local-engine=ios_${build_mode}"
         EchoError "or"
         EchoError "  flutter build ios --local-engine=ios_${build_mode}_unopt"
         EchoError "========================================================================"
         exit -1
       fi
       local_engine_flag="--local-engine=${LOCAL_ENGINE}"
       flutter_framework="${FLUTTER_ENGINE}/out/${LOCAL_ENGINE}/Flutter.xcframework"
     fi
     local bitcode_flag=""
     if [[ "$ENABLE_BITCODE" == "YES" && "$ACTION" == "install" ]]; then
       bitcode_flag="true"
     fi
   
     # TODO(jmagman): use assemble copied engine in add-to-app.
     if [[ -e "${project_path}/.ios" ]]; then
       RunCommand rm -rf -- "${derived_dir}/engine/Flutter.framework"
       RunCommand cp -r -- "${flutter_framework}" "${derived_dir}/engine"
     fi
   
     RunCommand pushd "${project_path}" > /dev/null
   
     local verbose_flag=""
     if [[ -n "$VERBOSE_SCRIPT_LOGGING" ]]; then
       verbose_flag="--verbose"
     fi
   
     local performance_measurement_option=""
     if [[ -n "$PERFORMANCE_MEASUREMENT_FILE" ]]; then
       performance_measurement_option="--performance-measurement-file=${PERFORMANCE_MEASUREMENT_FILE}"
     fi
   
     local code_size_directory=""
     if [[ -n "$CODE_SIZE_DIRECTORY" ]]; then
       code_size_directory="-dCodeSizeDirectory=${CODE_SIZE_DIRECTORY}"
     fi
   
     local codesign_identity_flag=""
     if [[ -n "${EXPANDED_CODE_SIGN_IDENTITY:-}" && "${CODE_SIGNING_REQUIRED:-}" != "NO" ]]; then
       codesign_identity_flag="-dCodesignIdentity=${EXPANDED_CODE_SIGN_IDENTITY}"
     fi
   
     RunCommand "${FLUTTER_ROOT}/bin/flutter"                                \
       ${verbose_flag}                                                       \
       ${flutter_engine_flag}                                                \
       ${local_engine_flag}                                                  \
       assemble                                                              \
       --no-version-check                                                    \
       --output="${BUILT_PRODUCTS_DIR}/"                                     \
       ${performance_measurement_option}                                     \
       -dTargetPlatform=ios                                                  \
       -dTargetFile="${target_path}"                                         \
       -dBuildMode=${build_mode}                                             \
       -dIosArchs="${ARCHS}"                                                 \
       -dSdkRoot="${SDKROOT}"                                                \
       -dSplitDebugInfo="${SPLIT_DEBUG_INFO}"                                \
       -dTreeShakeIcons="${TREE_SHAKE_ICONS}"                                \
       -dTrackWidgetCreation="${TRACK_WIDGET_CREATION}"                      \
       -dDartObfuscation="${DART_OBFUSCATION}"                               \
       -dEnableBitcode="${bitcode_flag}"                                     \
       "${codesign_identity_flag}"                                           \
       ${bundle_sksl_path}                                                   \
       ${code_size_directory}                                                \
       --ExtraGenSnapshotOptions="${EXTRA_GEN_SNAPSHOT_OPTIONS}"             \
       --DartDefines="${DART_DEFINES}"                                       \
       --ExtraFrontEndOptions="${EXTRA_FRONT_END_OPTIONS}"                   \
       "${build_mode}_ios_bundle_flutter_assets"
   
     if [[ $? -ne 0 ]]; then
       EchoError "Failed to package ${project_path}."
       exit -1
     fi
     StreamOutput "done"
     StreamOutput " └─Compiling, linking and signing..."
   
     RunCommand popd > /dev/null
   
     echo "Project ${project_path} built and packaged successfully."
     return 0
   }
   
   # Adds the App.framework as an embedded binary and the flutter_assets as
   # resources.
   EmbedFlutterFrameworks() {
     # Embed App.framework from Flutter into the app (after creating the Frameworks directory
     # if it doesn't already exist).
     local xcode_frameworks_dir="${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}"
     RunCommand mkdir -p -- "${xcode_frameworks_dir}"
     RunCommand rsync -av --delete --filter "- .DS_Store" "${BUILT_PRODUCTS_DIR}/App.framework" "${xcode_frameworks_dir}"
   
     # Embed the actual Flutter.framework that the Flutter app expects to run against,
     # which could be a local build or an arch/type specific build.
     RunCommand rsync -av --delete --filter "- .DS_Store" "${BUILT_PRODUCTS_DIR}/Flutter.framework" "${xcode_frameworks_dir}/"
   
     AddObservatoryBonjourService
   }
   
   # Add the observatory publisher Bonjour service to the produced app bundle Info.plist.
   AddObservatoryBonjourService() {
     local build_mode="$(ParseFlutterBuildMode)"
     # Debug and profile only.
     if [[ "${build_mode}" == "release" ]]; then
       return
     fi
     local built_products_plist="${BUILT_PRODUCTS_DIR}/${INFOPLIST_PATH}"
   
     if [[ ! -f "${built_products_plist}" ]]; then
       # Very occasionally Xcode hasn't created an Info.plist when this runs.
       # The file will be present on re-run.
       echo "${INFOPLIST_PATH} does not exist. Skipping _dartobservatory._tcp NSBonjourServices insertion. Try re-building to enable \"flutter attach\"."
       return
     fi
     # If there are already NSBonjourServices specified by the app (uncommon), insert the observatory service name to the existing list.
     if plutil -extract NSBonjourServices xml1 -o - "${built_products_plist}"; then
       RunCommand plutil -insert NSBonjourServices.0 -string "_dartobservatory._tcp" "${built_products_plist}"
     else
       # Otherwise, add the NSBonjourServices key and observatory service name.
       RunCommand plutil -insert NSBonjourServices -json "[\"_dartobservatory._tcp\"]" "${built_products_plist}"
     fi
   
     # Don't override the local network description the Flutter app developer specified (uncommon).
     # This text will appear below the "Your app would like to find and connect to devices on your local network" permissions popup.
     if ! plutil -extract NSLocalNetworkUsageDescription xml1 -o - "${built_products_plist}"; then
       RunCommand plutil -insert NSLocalNetworkUsageDescription -string "Allow Flutter tools on your computer to connect and debug your application. This prompt will not appear on release builds." "${built_products_plist}"
     fi
   }
   
   # Main entry point.
   if [[ $# == 0 ]]; then
     # Named entry points were introduced in Flutter v0.0.7.
     EchoError "error: Your Xcode project is incompatible with this version of Flutter. Run \"rm -rf ios/Runner.xcodeproj\" and \"flutter create .\" to regenerate."
     exit -1
   else
     case $1 in
       "build")
         BuildApp ;;
       "thin")
         # No-op, thinning is handled during the bundle asset assemble build target.
         ;;
       "embed")
         EmbedFlutterFrameworks ;;
       "embed_and_thin")
         # Thinning is handled during the bundle asset assemble build target, so just embed.
         EmbedFlutterFrameworks ;;
       "test_observatory_bonjour_service")
         # Exposed for integration testing only.
         AddObservatoryBonjourService ;;
     esac
   fi
   
5. jmagman commented on Jul 1, 2021

   

   jmagman

   on Jul 1, 2021

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   Huh, yeah that looks clean to me. Can't spot how CONFIGURATION=Debug is resulting in -dBuildMode=release...

   👍React with 👍4Reacted by Adeel Ahmad, Dominik Roszkowski, Bartek Pacia and Fabian Terhorst

   😄React with 😄2Reacted by charlieww and Fabian Terhorst
6. no-response

   removed

   waiting for responseThe Flutter team cannot make further progress on this issue until the original reporter respondsThe Flutter team cannot make further progress on this issue until the original reporter responds

   on Jul 1, 2021
7. jmagman

   added

   t: xcode"xcodebuild" on iOS and general Xcode project management"xcodebuild" on iOS and general Xcode project management

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

   P2Important issues not at the top of the work listImportant issues not at the top of the work list

   on Jul 1, 2021
8. mamuseferha

   added

   passed first triage

   on Nov 5, 2021
9. bartekpacia commented on Dec 18, 2022

   

   bartekpacia

   on Dec 18, 2022 · Hidden as duplicate

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10. charliewwdev commented on Feb 17, 2023

    

    charliewwdev

    on Feb 17, 2023

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    Huh, yeah that looks clean to me. Can't spot how CONFIGURATION=Debug is resulting in -dBuildMode=release...

    How do you fix it ? i have this issue two and do not know how to fix it... it's stuck me for a long time

    👍React with 👍9Reacted by Oğuz, Nguyen Thanh Hai, Argen Zhukeev, John Wehrle, Nyoman Putra Utama, harshitkumawat20, ViktorKirjanov, Verry and Aizan Sagheer
11. 4x0v7 commented on Mar 17, 2023

    

    4x0v7

    on Mar 17, 2023

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    Fix for me was removing export FLUTTER_BUILD_MODE=Release from the ~/.zshrc
    This ENV was overriding the command-line flags so builds would always be release builds

    👍React with 👍1Reacted by 开水白菜

    👎React with 👎1Reacted by Alfreedom

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12. juliandevelops commented on Apr 22, 2023

    

    juliandevelops

    on Apr 22, 2023

    More actions

    Not sure if it's relevant, but I came across the same issue and tried archiving the app via Xcode. The console logs the following error:

    This binary was built with the incorrect architecture to run on this machine.
    Flutter requires the Rosetta translation environment. If you are on an ARM Mac, try running:
    sudo softwareupdate --install-rosetta --agree-to-license
    

    And then I found this issue which mentions native build engine support for ARM Macs. But at the moment this issue is still open and the implementation not done. So I guess, maybe we just have to wait

    👍React with 👍2Reacted by Firooz Smart and João Felipe Santana

    ❤️React with ❤️2Reacted by Firooz Smart and João Felipe Santana
13. haitrieu223 commented on Apr 24, 2023

    

    haitrieu223

    on Apr 24, 2023 · Hidden as duplicate

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14. flutter-triage-bot

    added

    team-toolOwned by Flutter Tool teamOwned by Flutter Tool team

    triaged-toolTriaged by Flutter Tool teamTriaged by Flutter Tool team

    on Jul 8, 2023
15. Hixie

    removed

    passed first triage

    on Jul 8, 2023
16. yacineblr commented on Sep 14, 2023

    

    yacineblr

    on Sep 14, 2023 · Hidden as duplicate

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17. zakblacki commented on Dec 4, 2023

    

    zakblacki

    on Dec 4, 2023 · Hidden as duplicate

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18. dvkstalin commented on May 16, 2024

    

    dvkstalin

    on May 16, 2024

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    sudo softwareupdate --install-rosetta --agree-to-license Run this command. It works me.

    👍React with 👍2Reacted by takei-milabo and Gowtham Sooryaraj

    🎉React with 🎉1Reacted by VinothRishabh
19. quetool commented on Jul 18, 2024

    

    quetool

    on Jul 18, 2024 · Hidden as duplicate

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20. aneeshjoshi commented on Dec 4, 2024

    

    aneeshjoshi

    on Dec 4, 2024

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    Apologies for the long post, but hope this helps people avoid the hours of struggle (some of it self-inflicted).

    I encountered this same error while attempting to get flavors running on an iOS Simulator (iphone 16, iOS 18.1) while following the
    Flutter Flavors Guide

    Some additional context is that I was also setting this up in conjunction with setting up Firebase for multiple environments (Note: This guide is linked on the official Flutter Flavors Guide)

    I finally have a setup that works across flavors. I've called out any particular changes I may have initially overlooked or any deviations from the two docs I used.

    1. I created the schemes by duplicating the existing scheme from the Manage Schemes window

    

    2. This I believe is mentioned in the guide but it's important to ensure that your xcode scheme matches the flavor name (ensure case sensitive matching).

    For example, your xcode scheme should be called "dev" if your flavor is "dev" (case sensitive). I had made the mistake of naming my scheme "Dev" instead of matching it to flavor "dev".

    I believe this was my major blunder, but the associated errors did not immediately lead me to finding out that this was the issue.

    I will outline additional things I checked/modified, but those might not have as much bearing.

    3. This is mentioned in the guide but ensure that the flavor build configs are using the default schemes

    

    4. When setting Product Name in those instructions in Step 2, ensure you are doing so on the Project and not the Target. The Target has to remain as Runner.

    

    5. The instructions in Step 5 display an image for your scheme configurations that seems to set every setting to "Debug-{flavor}" (in the case of the instructions, it's "Debug-free".

    

    However, I mirrored the scheme settings that were already present for the default scheme and set the corresponding build configuration for my flavor
    

    6. I did run (on my M1 MBP)

    sudo softwareupdate --install-rosetta --agree-to-license`

    and received an error

    2024-12-04 09:06:02.684 softwareupdate[76958:3274780] Package Authoring Error: 062-58681: Package reference com.apple.pkg.RosettaUpdateAuto is missing installKBytes attribute

    which I believe you can ignore

    7. I updated my Podfile as follows

    
21. github-merge-queue

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    When parsing flavors, handle Xcode build configurations that are not …

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    When parsing flavors, handle Xcode build configurations that are not …

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24. github-actions commented on Feb 7, 2025

    

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    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.
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    locked as resolved and limited conversation to collaborators on Feb 7, 2025