Failed to verify bitcode while exporting archive for ad hoc distribution - tried Xcode 8.3.3 & Xcode 9

The error description took me in the wrong direction to find the solution.

This error is not related to bitcode.It appeared when the framework contained simulator slices (i386 x86_64)

Removing them before archiving resolved the issue.

Adding a run script phase to build phases of the target with following code helped in getting rid of the error.

APP_PATH="${TARGET_BUILD_DIR}/${WRAPPER_NAME}"# This script loops through the frameworks embedded in the application and# removes unused architectures.find "$APP_PATH" -name '*.framework' -type d | while read -r FRAMEWORKdoFRAMEWORK_EXECUTABLE_NAME=$(defaults read "$FRAMEWORK/Info.plist" CFBundleExecutable)FRAMEWORK_EXECUTABLE_PATH="$FRAMEWORK/$FRAMEWORK_EXECUTABLE_NAME"echo "Executable is $FRAMEWORK_EXECUTABLE_PATH"EXTRACTED_ARCHS=()for ARCH in $ARCHSdoecho "Extracting $ARCH from $FRAMEWORK_EXECUTABLE_NAME"lipo -extract "$ARCH" "$FRAMEWORK_EXECUTABLE_PATH" -o "$FRAMEWORK_EXECUTABLE_PATH-$ARCH"EXTRACTED_ARCHS+=("$FRAMEWORK_EXECUTABLE_PATH-$ARCH")doneecho "Merging extracted architectures: ${ARCHS}"lipo -o "$FRAMEWORK_EXECUTABLE_PATH-merged" -create "${EXTRACTED_ARCHS[@]}"rm "${EXTRACTED_ARCHS[@]}"echo "Replacing original executable with thinned version"rm "$FRAMEWORK_EXECUTABLE_PATH"mv "$FRAMEWORK_EXECUTABLE_PATH-merged" "$FRAMEWORK_EXECUTABLE_PATH"done

Credits: http://ikennd.ac/blog/2015/02/stripping-unwanted-architectures-from-dynamic-libraries-in-xcode/

If you don't know how to add a run script phase to your Xcode project, because maybe you're building a project with Cordova or Ionic and you never were taught much about Xcode, here's how you do that:

• Open your project in Xcode.
• Make sure you're looking at your project in the "Project Navigator" by clicking on the left-most icon in the left pane of Xcode (the one that says "show Project Navigator" when you point at it.
• Click on your project at the top of the navigator window, so that it is selected as your target
• At that point, in the middle portion of the Xcode window, you'll see several things appear near the top. General, Capabilities, Resource Tags, Info, among others. One of them is Build Phases -- click on it.
• Click the + that's near the top-left of the middle portion of the Xcode Window. It will say Add New Build Phase if you point at it long enough.
• Select "New Run Script Phase" from the menu that popped up when you clicked on the +
• Click on the arrow next to the Run Script that just appeared.
• Copy and paste the above script into the appropriate area just below the word "Shell". You shouldn't have to change anything else.
• Build/Archive your project like normal, only now you won't get those annoying "failed to verify bitcode" errors. :-)

I had to set Enable Bitcode to 'NO' in Build Settings

Try the following:

• Make sure this framework is added under Copy Frameworks Script in Build Phases.
• Use BITCODE_GENERATION_MODE instead of BITCODE_GENERATION_CODE