我正在使用mailcore框架，我收到一条错误消息“复制符号for archtecture x86”以及“找不到选项的目录”
以下是错误日志。
Ld的 /Users/user/Library/Developer/Xcode/DerivedData/DummyApp-chqcfanqqojjezfzonmnrjqnlsuy/Build/Products/Debug-iphonesimulator/DummyApp.app/DummyApp 正常的x86_64 cd“/ Users / user / Desktop / Desktop / Working Folder / Current Apps / Get Capture It / DummyApp / DummyApp” export IPHONEOS_DEPLOYMENT_TARGET = 8.1 export PATH =“/ Applications / Xcode.app / Contents / Developer / Platforms / iPhoneSimulator.platform / Developer / usr / bin：/Applications/Xcode.app/Contents/Developer/usr/bin：/ usr / bin：/ bin： / usr / sbin目录：/ sbin目录” /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -arch x86_64 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator8.1.sdk -L /用户/用户/库/开发商/ Xcode中/ DerivedData / DummyApp-chqcfanqqojjezfzonmnrjqnlsuy /编译/产品/调试，iphonesimulator -L /用户/用户/ EmailClient / MailCore / iOSPorts /端口/安全/ OpenSSL的/生成/调试-的iPhoneOS -F /用户/用户/库/开发商/ Xcode中/ DerivedData / DummyApp-chqcfanqqojjezfzonmnrjqnlsuy /编译/产品/调试，iphonesimulator -filelist /Users/user/Library/Developer/Xcode/DerivedData/DummyApp-chqcfanqqojjezfzonmnrjqnlsuy/Build/Intermediates/DummyApp.build/Debug-iphonesimulator/DummyApp.build/Objects-normal/x86_64/DummyApp.LinkFileList -Xlinker -rpath -Xlinker @ executable_path / Frameworks -Xlinker -objc_abi_version -Xlinker 2 -ObjC -fobjc-arc -fobjc-link-runtime -Xlinker -no_implicit_dylibs -mios-simulator-version-min = 8.1 / Users / user / Library /开发商/ Xcode中/ DerivedData / DummyApp-chqcfanqqojjezfzonmnrjqnlsuy /编译/产品/调试-iphonesimulator / libsasl2.a /Users/user/Library/Developer/Xcode/DerivedData/DummyApp-chqcfanqqojjezfzonmnrjqnlsuy/Build/Products/Debug-iphonesimulator/libmailcore.a -lz -framework Foundation -framework UIKit -framework Security -framework QuickLook -framework SystemConfiguration -framework MobileCoreServices -framework QuartzCore -liconv -framework AddressBook -framework AddressBookUI -framework AudioToolbox -framework AVFoundation -framework CFNetwork -framework CoreFoundation -framework CoreGraphics -framework CoreLocation -framework CoreTelephony -framework EventKit /Users/user/Library/Developer/Xcode/DerivedData/DummyApp-chqcfanqqojjezfzonmnrjqnlsuy/Build/Products/Debug-iphonesimulator/libsqlcipher.a -Xlinker -dependency_info -Xlinker /Users/user/Library/Developer/Xcode/DerivedData/DummyApp-chqcfanqqojjezfzonmnrjqnlsuy/Build/Intermediates/DummyApp.build/Debug-iphonesimulator/DummyApp.build/Objects-normal/x86_64/DummyApp_dependency_info.dat -o /Users/user/Library/Developer/Xcode/DerivedData/DummyApp-chqcfanqqojjezfzonmnrjqnlsuy/Build/Products/Debug-iphonesimulator/DummyApp.app/DummyApp
ld：警告：找不到选项的目录 '-L /用户/用户/ EmailClient / MailCore / iOSPorts /端口/安全/ OpenSSL的/生成/调试-的iPhoneOS' 重复符号_main in： /Users/user/Library/Developer/Xcode/DerivedData/DummyApp-chqcfanqqojjezfzonmnrjqnlsuy/Build/Intermediates/DummyApp.build/Debug-iphonesimulator/DummyApp.build/Objects-normal/x86_64/fmdb.o /Users/user/Library/Developer/Xcode/DerivedData/DummyApp-chqcfanqqojjezfzonmnrjqnlsuy/Build/Intermediates/DummyApp.build/Debug-iphonesimulator/DummyApp.build/Objects-normal/x86_64/main-FFC4D805A2793675.o 重复符号_main in： /Users/user/Library/Developer/Xcode/DerivedData/DummyApp-chqcfanqqojjezfzonmnrjqnlsuy/Build/Intermediates/DummyApp.build/Debug-iphonesimulator/DummyApp.build/Objects-normal/x86_64/fmdb.o /Users/user/Library/Developer/Xcode/DerivedData/DummyApp-chqcfanqqojjezfzonmnrjqnlsuy/Build/Intermediates/DummyApp.build/Debug-iphonesimulator/DummyApp.build/Objects-normal/x86_64/main-6E64576BC394526D.o ld：2个用于体系结构x86_64 clang的重复符号：错误：链接器 命令失败，退出代码为1（使用-v查看调用）
答案 0 :(得分：1)
重复的符号错误正是它所声明的内容，它在两者中都是重复的符号main：
fmdb
和
main
另一个错误是因为编译器无法找到：
/Users/user/EmailClient/MailCore/iOSPorts/ports/security/openssl/build/Debug-iphoneos