creating watchOS2 simulator build using xcodebuild

Question

I would like to build a simulator build using Terminal and xcodebuild. Up until now passing something similar like "-sdk iphonesimulator9.0" worked. Now that the watch extension is running on the watch I receive this error :

=== BUILD TARGET appName WatchKit Extension OF PROJECT appName WITH     CONFIGURATION Debug ===

Check dependencies
target specifies product type 'com.apple.product-type.watchkit2-extension',     but there's no such product type for the 'iphonesimulator' platform

Do you know how can someone build simulator version of their app which has watchOS2 support?

Thanks!

This post should answer your question: http://stackoverflow.com/questions/31478959/how-to-use-xcodebuild-in-xcode-7-with-a-watch-extension — Yong Li, Sep 18 '15 at 18:35

score 2 · Accepted Answer · answered Sep 18 '15 at 16:32

I just found the solution : To build a fat simulator build from Terminal, I have to execute the following steps : Basically the solution is about using the -destination option of xcodebuild.

I have to find a simulator target to configure that as destination :

    SIMULATOR_TARGET_DESTINATION=$("/xcode_7/Xcode.app/Contents/Developer/usr/bin/xcodebuild" -workspace MyApp.xcworkspace -scheme MyApp -configuration MyConfiguration -derivedDataPath My/DerivedData/Path clean build -destination 'platform=iOS Simulator' 2>&1 >/dev/null | grep id: | head -n 1 | awk '{print $4}' | tr ":" "=" | tr -d ",")

About the " 2>&1 >/dev/null" part :

the first part of the previous command :

"/xcode_7/Xcode.app/Contents/Developer/usr/bin/xcodebuild" -workspace MyApp.xcworkspace -scheme MyApp -configuration MyConfiguration -derivedDataPath My/DerivedData/Path clean build -destination 'platform=iOS Simulator'

prints out something like this to the stderr :

xcodebuild: error: Unable to find a destination matching the provided destination specifier:
    { platform:iOS Simulator }

Missing required device specifier option.
The device type “iOS Simulator” requires that either “name” or “id” be specified.
Please supply either “name” or “id”.

Available destinations for the "MyApp" scheme:
    { platform:iOS Simulator, id:3B706D94-89BE-46A3-81C7-34CA2F91B823, OS:9.1, name:iPad 2 }
    { platform:iOS Simulator, id:BE272A9F-4653-4633-9C51-2524AE6AE7D1, OS:9.1, name:iPad 2 }
    { platform:iOS Simulator, id:830CDD58-FF1C-4436-BDF8-0F05452317C7, OS:9.1, name:iPad Air }
    { platform:iOS Simulator, id:B36B366A-A993-4C92-BADC-8C0772320067, OS:9.1, name:iPad Air }
    { platform:iOS Simulator, id:71A801F9-E5CD-4E3A-B46B-882F6ECC7209, OS:9.1, name:iPad Air 2 }
    { platform:iOS Simulator, id:A314088B-2CA5-4F73-B528-9F82C2689156, OS:9.1, name:iPad Air 2 }
    { platform:iOS Simulator, id:0BD94515-1DBE-4A79-B618-FC077539A581, OS:9.1, name:iPad Pro }
    { platform:iOS Simulator, id:471B94A3-67EE-4A4C-BB41-86DB2EE2F11A, OS:9.1, name:iPad Pro }
    { platform:iOS Simulator, id:D39DDDC0-0A1E-4A7E-B9A0-449FD1FE129C, OS:9.1, name:iPad Retina }
    { platform:iOS Simulator, id:F716E5A4-93F7-43B1-94EE-9BE358E4670C, OS:9.1, name:iPad Retina }
    { platform:iOS Simulator, id:5458CA06-BBAE-46E8-9A3E-90E4AE5FEA87, OS:9.1, name:iPhone 4s }
    { platform:iOS Simulator, id:92C98913-F79D-420F-B79B-5387C12B017D, OS:9.1, name:iPhone 4s }
    { platform:iOS Simulator, id:576A754E-3421-4254-A9E9-692844FDFD02, OS:9.1, name:iPhone 5 }
    { platform:iOS Simulator, id:EE446826-3BB6-4081-B28F-8DF115C33776, OS:9.1, name:iPhone 5 }
    { platform:iOS Simulator, id:D4CF7855-9C77-481B-A6CF-68BE8C736695, OS:9.1, name:iPhone 5s }
    { platform:iOS Simulator, id:E332A751-0F8E-4F2A-B27B-35C904300029, OS:9.1, name:iPhone 5s }
    { platform:iOS Simulator, id:0B30A782-0D6F-4398-8F73-F2FCB72F0F31, OS:9.1, name:iPhone 6 }
    { platform:iOS Simulator, id:FD042A1E-2A44-4803-8D01-093E63AECBF9, OS:9.1, name:iPhone 6 }
    { platform:iOS Simulator, id:D0530464-F20E-4BA4-BA49-681B057362E2, OS:9.1, name:iPhone 6 Plus }
    { platform:iOS Simulator, id:F7D70F71-BA90-4F14-9935-BE5447997D8E, OS:9.1, name:iPhone 6 Plus }
    { platform:iOS Simulator, id:B157D201-9673-49A6-9D8A-F6CC43F9350F, OS:9.1, name:iPhone 6s }
    { platform:iOS Simulator, id:B9600BC7-EFE5-4A83-9916-9042B8609A14, OS:9.1, name:iPhone 6s }
    { platform:iOS Simulator, id:69254BE7-1F54-4AA7-8484-B270FF059A57, OS:9.1, name:iPhone 6s Plus }
    { platform:iOS Simulator, id:7F39C8DC-1582-4273-AA3E-5FEE19D4B3B0, OS:9.1, name:iPhone 6s Plus }"

To be able to grep out a device id from it, I have to redirect this stderr output to stdin for this command

So now that I have something like this : id=3B706D94-89BE-46A3-81C7-34CA2F91B823

in my SIMULATOR_TARGET_DESTINATION variable, I can use that to actually create the build : "/xcode_7/Xcode.app/Contents/Developer/usr/bin/xcodebuild" -workspace MyApp.xcworkspace -scheme MyApp -configuration MyConfiguration -derivedDataPath My/DerivedData/Path clean build -destination "$SIMULATOR_TARGET_DESTINATION" ONLY_ACTIVE_ARCH=NO

About "ONLY_ACTIVE_ARCH=NO" :

This way I can generate a fat build instead of just a build for one architecture (i386 or x86_64) .

I believe you can simplify this with `-destination 'platform=iOS Simulator,name=iPhone 6'` and skip extracting the `id`. — Joe, Nov 01 '15 at 20:36

score 0 · Answer 2 · answered Jan 26 '16 at 13:28

Nice approach.

Sometimes my Jenkins builds were failing due to duplicated simulators (mainly after using snapshot reset_simulators).

Long story short, I needed to get the first available simulator UUID and pass it in as a parameter to xcodebuild. Based on your answer, I ended up like this:

# Finds the UUID of the first "iPhone" simulator available
# (sometimes the simulators get duplicated, which can break the build)
#
# instruments -s devices    // Shows list of known devices
# grep "iPhone"             // Self explanatory. May return more than one currence.
# head -1                   // Displays only the first line of the previous grep
# awk '{print $4}'          // Displays the fourth argument of the previous line, which represent the UUID
# tr -d '[]'                // Removes the following characters of the returned UUID "[" and "]"
#
SIM_ID=$(instruments -s devices | grep "iPhone" | head -1 | awk '{print $4}' | tr -d '[]')

# Builds and runs tests
xcodebuild -workspace MyWorkspace.xcworkspace -sdk iphonesimulator -destination id=$SIM_ID -scheme MyScheme test

Works great. Thanks for sharing.

creating watchOS2 simulator build using xcodebuild

2 Answers2

About the " 2>&1 >/dev/null" part :

About "ONLY_ACTIVE_ARCH=NO" :