Cannot Run arm64 Binary on Simulator

[kernjackson]

Cannot Run arm64 Binary on Simulator

The printer library is maintained by the vendor and has not been updated to run natively on Apple Silicon. There are a workarounds such as running in Rosetta or only building for x86_64, but each come with their own downsides.

I was able to get the project building but not running by following along with these two articles Arm to Sim Static, ... Dynamic and this Spotify PR.

The app builds and launchs, but crashes due to a code signing issue.

Steps

1. Folder Structure
2. Info.plist
3. Set Build Version
4. Code Signing
5. ???
6. EXC_BAD_ACCESS

Folder Structure

% tree ~Desktop/BRPtouchPrinterKit.xcframework
├── Info.plist
├── _CodeSignature
│   ├── CodeDirectory
│   ├── CodeRequirements
│   ├── CodeRequirements-1
│   ├── CodeResources
│   └── CodeSignature
├── ios-arm64_armv7
│   └── BRPtouchPrinterKit.framework
│       ├── BRPtouchPrinterKit
│       ├── Headers
│       ├── Info.plist
│       ├── Modules
│       │   └── module.modulemap
│       ├── _CodeSignature
│       │   └── CodeResources
│       └── ...
└── ios-arm64_x86_64-simulator
    └── BRPtouchPrinterKit.framework
        ├── BRPtouchPrinterKit
        ├── Headers
        │   └── ...
        ├── Info.plist
        ├── Modules
        │   └── module.modulemap
        ├── _CodeSignature
        │   └── CodeResources
        └── ...

Info.plist

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
	<key>AvailableLibraries</key>
	<array>
		<dict>
			<key>LibraryIdentifier</key>
			<string>ios-arm64_armv7</string>
			<key>LibraryPath</key>
			<string>BRPtouchPrinterKit.framework</string>
			<key>SupportedArchitectures</key>
			<array>
				<string>arm64</string>
				<string>armv7</string>
			</array>
			<key>SupportedPlatform</key>
			<string>ios</string>
		</dict>
		<dict>
			<key>LibraryIdentifier</key>
			<string>ios-arm64_x86_64-simulator</string>
			<key>LibraryPath</key>
			<string>BRPtouchPrinterKit.framework</string>
			<key>SupportedArchitectures</key>
			<array>
				<string>arm64</string>
				<string>x86_64</string>
			</array>
			<key>SupportedPlatform</key>
			<string>ios</string>
			<key>SupportedPlatformVariant</key>
			<string>simulator</string>
		</dict>
	</array>
	<key>CFBundlePackageType</key>
	<string>XFWK</string>
	<key>XCFrameworkFormatVersion</key>
	<string>1.0</string>
</dict>
</plist>

Set Build Version

xcrun vtool -arch arm64 \
    -set-build-version 7 10.0 10.0 \
    -replace \
    -output BRPtouchPrinterKit.framework/BRPtouchPrinterKit.reworked \
    BRPtouchPrinterKit.framework/BRPtouchPrinterKit

Verify

xcrun vtool -arch arm64 \
    -show \
    BRPtouchPrinterKit.framework/BRPtouchPrinterKit.reworked

Code Sign

xcrun codesign --sign - BRPtouchPrinterKit.xcframework/ios-arm64-x86_64-simulator/BRPtouchPrinterKit.framework/BRPtouchPrinterKit

Says it is already signed. After verifying I change the name to just BRPtouchPrinterKit

EXC_BAD_ACCESS

`Thread 1: EXC_BAD_ACCESS (code=50, address=0x105fa0000)` 

Signing Error

This looks like a code signing issue, but I'm not certain where I went wrong.

...

Exception Type:  EXC_CRASH (SIGKILL (Code Signature Invalid))
Exception Codes: 0x0000000000000001, 0x0000000000000000
Exception Note:  EXC_CORPSE_NOTIFY
Termination Reason: CODESIGNING 2 

Triggered by Thread:  0
...

References

Hacking native ARM64 binaries to run on the iOS Simulator

Hacking native ARM64 binaries to run on the iOS Simulator

Hacking native ARM64 binaries to run on the iOS Simulator - the dynamic framework edition

Spotify PR #310

Spotify: PR #310 - Add XCFramework

[kernjackson]

Added support for the arm64 simulator support on M1 Macs with the help of xcframework-maker see PR #9