从Azure Pipeline生成Xamarin-iOS nuget时出现奇怪的“本机链接失败，未定义Objective-C类”(但在本地构建时不会)

x33g5p2x  于 2023-01-05  发布在  iOS
关注(0)|答案(1)|浏览(98)

我有一个Xamarin-iOS绑定项目，它在构建时会生成一个nuget。当且仅当我在Mac上构建它时，nuget才能在Xamarin-iOS应用程序中正常工作。
However, when I build this nuget via Azure Pipelines using MacOS-12 as the host (+ iphone16.2 sdk + sharpie 3.5.61 + clang-1400.0.29.202 exactly as in my localdev Mac) even though the build succeeds in generating the nuget it is poisoned in the sense that upon trying to build a Xamarin Application with it I get the following errors:

/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -framework CoreFoundation -framework Security -framework VisionKit -framework UserNotificationsUI -framework UniformTypeIdentifiers -framework ThreadNetwork -framework WatchConnectivity [...] -u _BrotliEncoderHasMoreOutput -u _BrotliEncoderDestroyInstance -u _BrotliEncoderCompress -u _mono_pmip

Undefined symbols for architecture arm64:
  "_OBJC_CLASS_$__TtC17McuMgrBindingsiOS17IOSDeviceResetter", referenced from:
      objc-class-ref in registrar.o
  "_OBJC_CLASS_$__TtC17McuMgrBindingsiOS17IOSFirmwareEraser", referenced from:
      objc-class-ref in registrar.o
  "_OBJC_CLASS_$__TtC17McuMgrBindingsiOS19IOSFirmwareUpgrader", referenced from:
      objc-class-ref in registrar.o

ld: symbol(s) not found for architecture arm64

我已经检查了存在于两个nugets内部的生成的dll，并且本地和azure nuget上确实存在符号"TtC17McuMgrBindingsiOS17IOSDeviceResetter"、"TtC17McuMgrBindingsiOS17IOSSfirmwareEraser"和"TtC17McuMgrBindingsiOS19IOSSfirmwareUpgrader"。
托管在MacOS-12上的Azure管道似乎使用Mono版本16.10.1进行构建，这正是我的localdev所拥有的。
我注意到Azure中的"clang"针对x86而不是arm64-也许这与观察到的错误有关？
x一个一个一个一个x一个一个二个x

我用来调用xcodebuild、sharpie和lipo的构建脚本如下：

#!/usr/bin/env bash

# Builds a fat library for a given xcode project (framework)
#
# Derived from https://github.com/xamcat/xamarin-binding-swift-framework/blob/master/Swift/Scripts/build.fat.sh#L3-L14

IOS_SDK_VERSION="${IOS_SDK_VERSION:-16.2}" # xcodebuild -showsdks

SWIFT_PROJECT_NAME="McuMgrBindingsiOS"
SWIFT_BUILD_PATH="./$SWIFT_PROJECT_NAME/build"
SWIFT_OUTPUT_PATH="./VendorFrameworks/swift-framework-proxy"
SWIFT_BUILD_SCHEME="McuMgrBindingsiOS"
SWIFT_PROJECT_PATH="./$SWIFT_PROJECT_NAME/$SWIFT_PROJECT_NAME.xcodeproj"
SWIFT_PACKAGES_PATH="./packages"
SWIFT_BUILD_CONFIGURATION="Release"

XAMARIN_BINDING_PATH="Xamarin/SwiftFrameworkProxy.Binding"

function print_macos_sdks() {
  xcodebuild -showsdks
}

function build() {
  echo "** Build iOS framework for simulator and device"

  echo "**** (Build 1/5) Cleanup any possible traces of previous builds"

  rm -Rf "$SWIFT_BUILD_PATH"
  rm -Rf "$SWIFT_PACKAGES_PATH"
  rm -Rf "$XAMARIN_BINDING_PATH"

  echo "**** (Build 2/5) Restore packages for 'iphoneos$IOS_SDK_VERSION'"

  xcodebuild \
    -sdk "iphoneos$IOS_SDK_VERSION" \
    -arch arm64 \
    -scheme "$SWIFT_BUILD_SCHEME" \
    -project "$SWIFT_PROJECT_PATH" \
    -configuration "$SWIFT_BUILD_CONFIGURATION" \
    -clonedSourcePackagesDirPath "$SWIFT_PACKAGES_PATH" \
    -resolvePackageDependencies

  if [ $? -ne 0 ]; then
    echo "** [FAILED] Failed to download dependencies for 'iphoneos$IOS_SDK_VERSION'"
    exit 1
  fi

  echo "**** (Build 3/5) Build for 'iphoneos$IOS_SDK_VERSION'"

  # https://stackoverflow.com/a/74478244/863651
  xcodebuild \
    -sdk "iphoneos$IOS_SDK_VERSION" \
    -arch arm64 \
    -scheme "$SWIFT_BUILD_SCHEME" \
    -project "$SWIFT_PROJECT_PATH" \
    -configuration "$SWIFT_BUILD_CONFIGURATION" \
    -derivedDataPath "$SWIFT_BUILD_PATH" \
    -clonedSourcePackagesDirPath "$SWIFT_PACKAGES_PATH" \
    CODE_SIGN_IDENTITY="" \
    CODE_SIGNING_ALLOWED=NO \
    CODE_SIGNING_REQUIRED=NO

  if [ $? -ne 0 ]; then
    echo "** [FAILED] Failed to build 'iphoneos$IOS_SDK_VERSION'"
    exit 1
  fi

  echo "**** (Build 4/5) Restore packages for 'iphonesimulator$IOS_SDK_VERSION'"

  xcodebuild \
    -sdk "iphonesimulator$IOS_SDK_VERSION" \
    -arch arm64 \
    -scheme "$SWIFT_BUILD_SCHEME" \
    -project "$SWIFT_PROJECT_PATH" \
    -configuration "$SWIFT_BUILD_CONFIGURATION" \
    -clonedSourcePackagesDirPath "$SWIFT_PACKAGES_PATH" \
    -resolvePackageDependencies

  if [ $? -ne 0 ]; then
    echo "** [FAILED] Failed to download dependencies for 'iphonesimulator$IOS_SDK_VERSION'"
    exit 1
  fi

  echo "**** (Build 5/5) Build for 'iphonesimulator$IOS_SDK_VERSION'"

  # https://stackoverflow.com/a/74478244/863651
  # https://stackoverflow.com/a/64026089/863651
  xcodebuild \
    -sdk "iphonesimulator$IOS_SDK_VERSION" \
    -scheme "$SWIFT_BUILD_SCHEME" \
    -project "$SWIFT_PROJECT_PATH" \
    -configuration "$SWIFT_BUILD_CONFIGURATION" \
    -derivedDataPath "$SWIFT_BUILD_PATH" \
    -clonedSourcePackagesDirPath "$SWIFT_PACKAGES_PATH" \
    EXCLUDED_ARCHS="arm64" \
    CODE_SIGN_IDENTITY="" \
    CODE_SIGNING_ALLOWED=NO \
    CODE_SIGNING_REQUIRED=NO

  if [ $? -ne 0 ]; then
    echo "** [FAILED] Failed to build 'iphonesimulator$IOS_SDK_VERSION'"
    exit 1
  fi
}

function create_fat_binaries() {
  echo "** Create fat binaries for Release-iphoneos and Release-iphonesimulator configuration"

  echo "**** (FatBinaries 1/8) Copy one build as a fat framework"

  cp \
    -R \
    "$SWIFT_BUILD_PATH/Build/Products/Release-iphoneos" \
    "$SWIFT_BUILD_PATH/Release-fat"
  if [ $? -ne 0 ]; then
    echo "** [FAILED] Failed to copy"
    exit 1
  fi

  echo "**** (FatBinaries 2/8) Combine modules from another build with the fat framework modules"

  cp \
    -R \
    "$SWIFT_BUILD_PATH/Build/Products/Release-iphonesimulator/$SWIFT_PROJECT_NAME.framework/Modules/$SWIFT_PROJECT_NAME.swiftmodule/" \
    "$SWIFT_BUILD_PATH/Release-fat/$SWIFT_PROJECT_NAME.framework/Modules/$SWIFT_PROJECT_NAME.swiftmodule/"
  if [ $? -ne 0 ]; then
    echo "** [FAILED] Failed to copy"
    exit 1
  fi

  echo "**** (FatBinaries 3/8) Combine iphoneos + iphonesimulator configuration as fat libraries"

  lipo \
    -create \
    -output "$SWIFT_BUILD_PATH/Release-fat/$SWIFT_PROJECT_NAME.framework/$SWIFT_PROJECT_NAME" \
    "$SWIFT_BUILD_PATH/Build/Products/Release-iphoneos/$SWIFT_PROJECT_NAME.framework/$SWIFT_PROJECT_NAME" \
    "$SWIFT_BUILD_PATH/Build/Products/Release-iphonesimulator/$SWIFT_PROJECT_NAME.framework/$SWIFT_PROJECT_NAME"
  if [ $? -ne 0 ]; then
    echo "** [FAILED] Failed to combine configurations"
    exit 1
  fi

  echo "**** (FatBinaries 4/8) Verify results"
  lipo \
    -info \
    "$SWIFT_BUILD_PATH/Release-fat/$SWIFT_PROJECT_NAME.framework/$SWIFT_PROJECT_NAME"
  if [ $? -ne 0 ]; then
    echo "** [FAILED] Failed to verify results"
    exit 1
  fi

  echo "**** (FatBinaries 5/8) Copy fat frameworks to the output folder"

  rm -Rf "$SWIFT_OUTPUT_PATH" &&
    mkdir -p "$SWIFT_OUTPUT_PATH" &&
    cp -Rf \
      "$SWIFT_BUILD_PATH/Release-fat/$SWIFT_PROJECT_NAME.framework" \
      "$SWIFT_OUTPUT_PATH"
  if [ $? -ne 0 ]; then
    echo "** [FAILED] Failed to copy fat frameworks"
    exit 1
  fi

  echo "**** (FatBinaries 6/8) Generating binding api definition and structs"
  sharpie \
    bind \
    --sdk="iphoneos$IOS_SDK_VERSION" \
    --scope="$SWIFT_OUTPUT_PATH/$SWIFT_PROJECT_NAME.framework/Headers/" \
    --output="$SWIFT_OUTPUT_PATH/XamarinApiDef" \
    --namespace="$SWIFT_PROJECT_NAME" \
    "$SWIFT_OUTPUT_PATH/$SWIFT_PROJECT_NAME.framework/Headers/$SWIFT_PROJECT_NAME-Swift.h"
  if [ $? -ne 0 ]; then
    echo "** [FAILED] Failed to generate binding api definitions and structs"
    exit 1
  fi

  echo "**** (FatBinaries 7/8) Replace existing metadata with the updated"

  mkdir -p "$XAMARIN_BINDING_PATH/" &&
    cp \
      -Rf \
      "$SWIFT_OUTPUT_PATH/XamarinApiDef/." \
      "$XAMARIN_BINDING_PATH/"
  if [ $? -ne 0 ]; then
    echo "** [FAILED] Failed to replace existing metadata with the updated"
    exit 1
  fi

  echo "**** (FatBinaries 8/8) Replace NativeHandle -> IntPtr in the generated c# files"

  # replace nativehandle -> intptr
  find \
    "$XAMARIN_BINDING_PATH/" \
    -type f \
    -exec sed -i.bak "s/NativeHandle[ ]/IntPtr /gi" {} \;

  # also need to get rid of stupid autogenerated [verify(...)] attributes which are intentionally placed there
  # by sharpie to force manual verification of the .cs files that have been autogenerated
  #
  # https://learn.microsoft.com/en-us/xamarin/cross-platform/macios/binding/objective-sharpie/platform/verify
  find \
    "$XAMARIN_BINDING_PATH/" \
    -type f \
    -exec sed -i.bak 's/\[Verify\s*\(.*\)\]//gi' {} \;

  # adding [model] to the interfaces seems to be mandatory for the azure pipelines to generate a valid nuget for ios   if we
  # omit adding this attribute then the nuget generated by the azure pipelines gets poisoned and it causes a very cryptic runtime error
  # so I'm not 100% sure why the [model] attribute does away with the observed error but it does the trick of solving the problem somehow
  #
  #  find \
  #    "$XAMARIN_BINDING_PATH/" \
  #    -type f \
  #    -exec sed -i.bak 's/interface IOSDeviceResetter/[Model] interface IOSDeviceResetter/gi' {} \;
  #  find \
  #    "$XAMARIN_BINDING_PATH/" \
  #    -type f \
  #    -exec sed -i.bak 's/interface IOSFirmwareEraser/[Model] interface IOSFirmwareEraser/gi' {} \;
  #  find \
  #    "$XAMARIN_BINDING_PATH/" \
  #    -type f \
  #    -exec sed -i.bak 's/interface IOSFirmwareUpgrader/[Model] interface IOSFirmwareUpgrader/gi' {} \;

  # https://stackoverflow.com/a/49477937/863651   its vital to add [BaseType] to the interface otherwise compilation will fail
  find \
    "$XAMARIN_BINDING_PATH/" \
    -type f \
    -exec sed -i.bak 's/interface IOSListenerForDeviceResetter/[BaseType(typeof(NSObject))] [Model] interface IOSListenerForDeviceResetter/gi' {} \;
  find \
    "$XAMARIN_BINDING_PATH/" \
    -type f \
    -exec sed -i.bak 's/interface IOSListenerForFirmwareEraser/[BaseType(typeof(NSObject))] [Model] interface IOSListenerForFirmwareEraser/gi' {} \;
  find \
    "$XAMARIN_BINDING_PATH/" \
    -type f \
    -exec sed -i.bak 's/interface IOSListenerForFirmwareUpgrader/[BaseType(typeof(NSObject))] [Model] interface IOSListenerForFirmwareUpgrader/gi' {} \;
}

function main() {
  print_macos_sdks
  build
  create_fat_binaries

  echo "** Done!"
}

main "$@"

如果你愿意的话，我可以为你提供工作的和不工作的金块，让你自己比较它们--也许一双更有经验的眼睛可以发现一些我不能发现的东西。
PS：我尝试在"ApiDefinition.cs"中的每个生成接口之前添加[Protocol]，但即使这解决了最初的问题，也导致了另一个问题：
在尝试调用示例化类的任何方法时，我现在得到一个异常，名为"Foundation. You_Should_Not_Call_base_In_This_Method"

Azure

1条答案

按热度按时间
ct3nt3jp

ct3nt3jp1#

我发现了问题所在。事实证明Azure管道中的swift编译器就像一个聪明的家伙，它会剥离任何和所有应该被导出的公共类，如果它们不在包中使用的话（愚蠢至极，但你已经知道了，伙计们）。我所做的就是添加一个伪类来“说服”编译器这些公共类不应该被剥离：

import Foundation

// to future maintainers     keep this dummy class around so as to have it reference the exported classes
// to future maintainers
// to future maintainers     omitting this one causes the build environment of the azure pipelines to go completely smart-assinine and strip the
// to future maintainers     public classes thinking that they are not being used anywhere

public class DummyPlaceholder {
    public func Foobar() {
        let _ = SomeClassHere(nil)
        let _ = SomeOtherClassHere(nil, nil)
        ...
    }
}
赞(0）分享  回复(0）举报  2023-01-05
我来回答

相关问题

    查看更多

    热门标签

    更多
    JavaquerypythonNode开发语言requestUtil数据库Table后端算法LoggerMessageElementParser

    最新问答

    更多
    • 蜀ICP备13028337号-1 大数据知识库 https://www.saoniuhuo.com © All rights reserved
    • 本站内容来源互联网,如果侵犯您的权益请联系我们删除, 联系方式：448109455@qq.com