MonoTouch Build：ld：未找到架构armv7的符号
我有一个MonoTouch项目，可以在i386 / iOS模拟器上构建和运行。 该项目引用了一个本机（Obj-C）库，我通过使用Xamarin的BindingSample中描述的btouch进程将其转换为MonoTouch DLL：
https://github.com/xamarin/monotouch-samples/tree/eb640165f0485ff59b2f80e73ccff382bf4f2083/BindingSample/src/binding
所以我的makefile构建了所有三种架构（i386，armv6和armv7），然后将三个输出组合到一个’Universal’库中，最后使用btouch生成MonoTouch DLL。
为了确保我的通用库包含所有三种架构，我使用lipo -info进行了检查，实际上它包含了i386，armv6和armv7。
但是，当我在实际的iOS设备上进行部署时，我会收到以下错误：
Undefined symbols for architecture armv7: "_ABAddressBookCreate", referenced from: -[ContactsTokenField setupSms] in libContactsTokenFieldViewUniversal.a(ContactsTokenField.o) -[TITokenFieldView setupWithAddressType:prompt:] in libContactsTokenFieldViewUniversal.a(TITokenField.o) "_ABAddressBookCopyArrayOfAllPeople", referenced from: -[ContactsTokenField setupSms] in libContactsTokenFieldViewUniversal.a(ContactsTokenField.o) -[TITokenFieldView setupWithAddressType:prompt:] in libContactsTokenFieldViewUniversal.a(TITokenField.o) "_ABAddressBookGetPersonCount", referenced from: -[ContactsTokenField setupSms] in libContactsTokenFieldViewUniversal.a(ContactsTokenField.o) -[TITokenFieldView setupWithAddressType:prompt:] in libContactsTokenFieldViewUniversal.a(TITokenField.o) "_ABRecordCopyValue", referenced from: -[ContactsTokenField setupSms] in libContactsTokenFieldViewUniversal.a(ContactsTokenField.o) -[TITokenFieldView setupWithAddressType:prompt:] in libContactsTokenFieldViewUniversal.a(TITokenField.o) "_kABPersonFirstNameProperty", referenced from: -[ContactsTokenField setupSms] in libContactsTokenFieldViewUniversal.a(ContactsTokenField.o) -[TITokenFieldView setupWithAddressType:prompt:] in libContactsTokenFieldViewUniversal.a(TITokenField.o) -[ContactsTokenField setupSms] in libContactsTokenFieldViewUniversal.a(ContactsTokenField.o) -[TITokenFieldView setupWithAddressType:prompt:] in libContactsTokenFieldViewUniversal.a(TITokenField.o) "_kABPersonLastNameProperty", referenced from: -[ContactsTokenField setupSms] in libContactsTokenFieldViewUniversal.a(ContactsTokenField.o) -[TITokenFieldView setupWithAddressType:prompt:] in libContactsTokenFieldViewUniversal.a(TITokenField.o) -[ContactsTokenField setupSms] in libContactsTokenFieldViewUniversal.a(ContactsTokenField.o) -[TITokenFieldView setupWithAddressType:prompt:] in libContactsTokenFieldViewUniversal.a(TITokenField.o) "_ABMultiValueGetCount", referenced from: -[TITokenFieldView setupWithAddressType:prompt:] in libContactsTokenFieldViewUniversal.a(TITokenField.o) "_ABMultiValueCopyLabelAtIndex", referenced from: -[TITokenFieldView setupWithAddressType:prompt:] in libContactsTokenFieldViewUniversal.a(TITokenField.o) "_ABMultiValueCopyValueAtIndex", referenced from: -[TITokenFieldView setupWithAddressType:prompt:] in libContactsTokenFieldViewUniversal.a(TITokenField.o) "_kABPersonEmailProperty", referenced from: -[TITokenFieldView setupWithAddressType:prompt:] in libContactsTokenFieldViewUniversal.a(TITokenField.o) "_kABPersonPhoneProperty", referenced from: -[TITokenFieldView setupWithAddressType:prompt:] in libContactsTokenFieldViewUniversal.a(TITokenField.o) ld: symbol(s) not found for architecture armv7 collect2: ld returned 1 exit status mtouch exited with code 1
我究竟做错了什么？
发现问题：本地库依赖于AddressBook框架，我忘了将它包含在API定义项目的AssemblyInfo.cs中：
[assembly: LinkWith ("libContactsTokenFieldViewUniversal.a", LinkTarget.Simulator | LinkTarget.ArmV6 | LinkTarget.ArmV7, ForceLoad = true, Frameworks="AddressBook Foundation")]