在xamarin中使用静态库时出错：错误：本机链接错误：找不到-lgcc_eh的库

我有一个静态库（arm64）的绑定，并将其添加为对xamarin studio中的单视图iOS项目的引用，但出现了一个与clang++相关的错误。我在附加的mtouch参数（最后一个）上尝试了不同的东西：

但我有一个错误：

本机链接错误：找不到-lgcc_eh的库

我不知道我的电脑缺了什么，我需要更新什么吗？我可以毫无问题地在XCode上运行本机代码

其他信息：
sdk版本9.3
链接器行为：链接所有
禁用的增量生成

部分日志：

/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang++  -framework UIKit -framework Foundation -framework CoreGraphics -weak_framework CFNetwork /Users/bam/Projects/bind1/testface/obj/iPhone/Debug/mtouch-cache/libsmma_combo.a /Users/bam/Projects/bind1/testface/obj/iPhone/Debug/mtouch-cache/libsmma.a /Library/Frameworks/Xamarin.iOS.framework/Versions/9.8.2.22/SDKs/MonoTouch.iphoneos.sdk/usr/lib/libmonosgen-2.0.a /Library/Frameworks/Xamarin.iOS.framework/Versions/9.8.2.22/SDKs/MonoTouch.iphoneos.sdk/usr/lib/libxamarin-debug.a /Users/bam/Projects/bind1/testface/obj/iPhone/Debug/mtouch-cache/testface.exe.arm64.o /Users/bam/Projects/bind1/testface/obj/iPhone/Debug/mtouch-cache/Xamarin.iOS.dll.arm64.o /Users/bam/Projects/bind1/testface/obj/iPhone/Debug/mtouch-cache/mscorlib.dll.arm64.o /Users/bam/Projects/bind1/testface/obj/iPhone/Debug/mtouch-cache/System.dll.arm64.o /Users/bam/Projects/bind1/testface/obj/iPhone/Debug/mtouch-cache/bind1.dll.arm64.o /Users/bam/Projects/bind1/testface/obj/iPhone/Debug/mtouch-cache/registrar.arm64.o /Users/bam/Projects/bind1/testface/obj/iPhone/Debug/mtouch-cache/main.arm64.o -force_load /Library/Frameworks/Xamarin.iOS.framework/Versions/9.8.2.22/SDKs/MonoTouch.iphoneos.sdk/usr/lib/libapp.a -licucore -lstdc++.6.0.9 -lgcc_eh -Wl,-pie -arch arm64 -miphoneos-version-min=9.3 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS9.3.sdk -lz -o /Users/bam/Projects/bind1/testface/bin/iPhone/Debug/testface.app/testface -liconv -lstdc++ -dead_strip -u _UIApplicationMain -u _xamarin_release_managed_ref -u _xamarin_create_managed_ref -u _xamarin_get_block_descriptor -u _xamarin_timezone_get_data -u _xamarin_log -u _mono_pmip
        Process exited with code 1, command:
        /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang++  -framework UIKit -framework Foundation -framework CoreGraphics -weak_framework CFNetwork /Users/bam/Projects/bind1/testface/obj/iPhone/Debug/mtouch-cache/libsmma_combo.a /Users/bam/Projects/bind1/testface/obj/iPhone/Debug/mtouch-cache/libsmma.a /Library/Frameworks/Xamarin.iOS.framework/Versions/9.8.2.22/SDKs/MonoTouch.iphoneos.sdk/usr/lib/libmonosgen-2.0.a /Library/Frameworks/Xamarin.iOS.framework/Versions/9.8.2.22/SDKs/MonoTouch.iphoneos.sdk/usr/lib/libxamarin-debug.a /Users/bam/Projects/bind1/testface/obj/iPhone/Debug/mtouch-cache/testface.exe.arm64.o /Users/bam/Projects/bind1/testface/obj/iPhone/Debug/mtouch-cache/Xamarin.iOS.dll.arm64.o /Users/bam/Projects/bind1/testface/obj/iPhone/Debug/mtouch-cache/mscorlib.dll.arm64.o /Users/bam/Projects/bind1/testface/obj/iPhone/Debug/mtouch-cache/System.dll.arm64.o /Users/bam/Projects/bind1/testface/obj/iPhone/Debug/mtouch-cache/bind1.dll.arm64.o /Users/bam/Projects/bind1/testface/obj/iPhone/Debug/mtouch-cache/registrar.arm64.o /Users/bam/Projects/bind1/testface/obj/iPhone/Debug/mtouch-cache/main.arm64.o -force_load /Library/Frameworks/Xamarin.iOS.framework/Versions/9.8.2.22/SDKs/MonoTouch.iphoneos.sdk/usr/lib/libapp.a -licucore -lstdc++.6.0.9 -lgcc_eh -Wl,-pie -arch arm64 -miphoneos-version-min=9.3 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS9.3.sdk -lz -o /Users/bam/Projects/bind1/testface/bin/iPhone/Debug/testface.app/testface -liconv -lstdc++ -dead_strip -u _UIApplicationMain -u _xamarin_release_managed_ref -u _xamarin_create_managed_ref -u _xamarin_get_block_descriptor -u _xamarin_timezone_get_data -u _xamarin_log -u _mono_pmip
        ld: library not found for -lgcc_eh
        clang: error: linker command failed with exit code 1 (use -v to see invocation)

MTOUCH: error MT5209: Native linking error: library not found for -lgcc_eh
MTOUCH: error MT5201: Native linking failed. Please review the build log and the user flags provided to gcc: -lstdc++ -dead_strip
MTOUCH: error MT5202: Native linking failed. Please review the build log.
    Task "MTouch" execution -- FAILED
    Done building target "_CompileToNative" in project "/Users/bam/Projects/bind1/testface/testface.csproj".-- FAILED

Done building project "/Users/bam/Projects/bind1/testface/testface.csproj".-- FAILED

Build FAILED.

---

没有太多数据可以帮助，但我可以说，

-lgcc_eh

不是直接从Xamarin.iOS来的

如果它不在您自己的项目选项中，那么它必须来自您在项目中使用的某个绑定/第三方程序集

您的部分构建日志提示有东西将

libsmma\u combo.a

和

libsmma.a

添加到您的项目中。它们也是其他选项（例如，

-licucore-lstdc++.6.0.9

），可能来自您正在使用的第三方库的要求

---

有可能其中一个比较旧，并且有更新可用。

没有太多数据可以帮助，但我可以说，

-lgcc_eh

并不是直接从Xamarin.iOS上下载的

如果它不在您自己的项目选项中，那么它必须来自您在项目中使用的某个绑定/第三方程序集

您的部分构建日志提示有东西将

libsmma\u combo.a

和

libsmma.a

添加到您的项目中。它们也是其他选项（例如，

-licucore-lstdc++.6.0.9

），可能来自您正在使用的第三方库的要求

---

可能其中一个比较旧，并且有更新可用。

谢谢Poupou，很抱歉我的解释不好。libsmma_combo.a和libsmma.a是我绑定的第三方应用程序。“-licucore-lstdc++.6.0.9”是我作为链接器标志添加到绑定库中的内容（我也尝试过没有链接器标志），如果需要，我可以提供更多信息。如果您的绑定在它的

[LinkWith]

属性中使用了

needsGCExceptionHandling=true

，我们将非常感谢您的帮助。谢谢您，很抱歉我的错误解释。libsmma_combo.a和libsmma.a是我绑定的第三方应用程序。“-licucore-lstdc++.6.0.9”是我作为链接器标志添加到绑定库中的内容（我也尝试过没有链接器标志），如果需要，我可以提供更多信息。您的绑定是否在其

[LinkWith]

属性中使用了

needsAcceptionHandling=true

？

/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang++  -framework UIKit -framework Foundation -framework CoreGraphics -weak_framework CFNetwork /Users/bam/Projects/bind1/testface/obj/iPhone/Debug/mtouch-cache/libsmma_combo.a /Users/bam/Projects/bind1/testface/obj/iPhone/Debug/mtouch-cache/libsmma.a /Library/Frameworks/Xamarin.iOS.framework/Versions/9.8.2.22/SDKs/MonoTouch.iphoneos.sdk/usr/lib/libmonosgen-2.0.a /Library/Frameworks/Xamarin.iOS.framework/Versions/9.8.2.22/SDKs/MonoTouch.iphoneos.sdk/usr/lib/libxamarin-debug.a /Users/bam/Projects/bind1/testface/obj/iPhone/Debug/mtouch-cache/testface.exe.arm64.o /Users/bam/Projects/bind1/testface/obj/iPhone/Debug/mtouch-cache/Xamarin.iOS.dll.arm64.o /Users/bam/Projects/bind1/testface/obj/iPhone/Debug/mtouch-cache/mscorlib.dll.arm64.o /Users/bam/Projects/bind1/testface/obj/iPhone/Debug/mtouch-cache/System.dll.arm64.o /Users/bam/Projects/bind1/testface/obj/iPhone/Debug/mtouch-cache/bind1.dll.arm64.o /Users/bam/Projects/bind1/testface/obj/iPhone/Debug/mtouch-cache/registrar.arm64.o /Users/bam/Projects/bind1/testface/obj/iPhone/Debug/mtouch-cache/main.arm64.o -force_load /Library/Frameworks/Xamarin.iOS.framework/Versions/9.8.2.22/SDKs/MonoTouch.iphoneos.sdk/usr/lib/libapp.a -licucore -lstdc++.6.0.9 -lgcc_eh -Wl,-pie -arch arm64 -miphoneos-version-min=9.3 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS9.3.sdk -lz -o /Users/bam/Projects/bind1/testface/bin/iPhone/Debug/testface.app/testface -liconv -lstdc++ -dead_strip -u _UIApplicationMain -u _xamarin_release_managed_ref -u _xamarin_create_managed_ref -u _xamarin_get_block_descriptor -u _xamarin_timezone_get_data -u _xamarin_log -u _mono_pmip
        Process exited with code 1, command:
        /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang++  -framework UIKit -framework Foundation -framework CoreGraphics -weak_framework CFNetwork /Users/bam/Projects/bind1/testface/obj/iPhone/Debug/mtouch-cache/libsmma_combo.a /Users/bam/Projects/bind1/testface/obj/iPhone/Debug/mtouch-cache/libsmma.a /Library/Frameworks/Xamarin.iOS.framework/Versions/9.8.2.22/SDKs/MonoTouch.iphoneos.sdk/usr/lib/libmonosgen-2.0.a /Library/Frameworks/Xamarin.iOS.framework/Versions/9.8.2.22/SDKs/MonoTouch.iphoneos.sdk/usr/lib/libxamarin-debug.a /Users/bam/Projects/bind1/testface/obj/iPhone/Debug/mtouch-cache/testface.exe.arm64.o /Users/bam/Projects/bind1/testface/obj/iPhone/Debug/mtouch-cache/Xamarin.iOS.dll.arm64.o /Users/bam/Projects/bind1/testface/obj/iPhone/Debug/mtouch-cache/mscorlib.dll.arm64.o /Users/bam/Projects/bind1/testface/obj/iPhone/Debug/mtouch-cache/System.dll.arm64.o /Users/bam/Projects/bind1/testface/obj/iPhone/Debug/mtouch-cache/bind1.dll.arm64.o /Users/bam/Projects/bind1/testface/obj/iPhone/Debug/mtouch-cache/registrar.arm64.o /Users/bam/Projects/bind1/testface/obj/iPhone/Debug/mtouch-cache/main.arm64.o -force_load /Library/Frameworks/Xamarin.iOS.framework/Versions/9.8.2.22/SDKs/MonoTouch.iphoneos.sdk/usr/lib/libapp.a -licucore -lstdc++.6.0.9 -lgcc_eh -Wl,-pie -arch arm64 -miphoneos-version-min=9.3 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS9.3.sdk -lz -o /Users/bam/Projects/bind1/testface/bin/iPhone/Debug/testface.app/testface -liconv -lstdc++ -dead_strip -u _UIApplicationMain -u _xamarin_release_managed_ref -u _xamarin_create_managed_ref -u _xamarin_get_block_descriptor -u _xamarin_timezone_get_data -u _xamarin_log -u _mono_pmip
        ld: library not found for -lgcc_eh
        clang: error: linker command failed with exit code 1 (use -v to see invocation)

MTOUCH: error MT5209: Native linking error: library not found for -lgcc_eh
MTOUCH: error MT5201: Native linking failed. Please review the build log and the user flags provided to gcc: -lstdc++ -dead_strip
MTOUCH: error MT5202: Native linking failed. Please review the build log.
    Task "MTouch" execution -- FAILED
    Done building target "_CompileToNative" in project "/Users/bam/Projects/bind1/testface/testface.csproj".-- FAILED

Done building project "/Users/bam/Projects/bind1/testface/testface.csproj".-- FAILED

Build FAILED.