ios - 体系结构 x86 的重复符号

Question

我正在使用 mailcore 框架，但收到错误消息“archtecture x86 的重复符号”以及“找不到选项的目录”

下面是错误日志。

Ld /Users/user/Library/Developer/Xcode/DerivedData/DummyApp-chqcfanqqojjezfzonmnrjqnlsuy/Build/Products/Debug-iphonesimulator/DummyApp.app/DummyApp normal 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:/sbin" /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/Users/user/Library/Developer/Xcode/DerivedData/DummyApp-chqcfanqqojjezfzonmnrjqnlsuy/Build/Products/Debug-iphonesimulator -L/Users/user/EmailClient/MailCore/iOSPorts/ports/security/openssl/build/Debug-iphoneos -F/Users/user/Library/Developer/Xcode/DerivedData/DummyApp-chqcfanqqojjezfzonmnrjqnlsuy/Build/Products/Debug-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/Developer/Xcode/DerivedData/DummyApp-chqcfanqqojjezfzonmnrjqnlsuy/Build/Products/Debug-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: warning: directory not found for option '-L/Users/user/EmailClient/MailCore/iOSPorts/ports/security/openssl/build/Debug-iphoneos' duplicate symbol _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 duplicate symbol _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 duplicate symbols for architecture x86_64 clang: error: linker command failed with exit code 1 (use -v to see invocation)

Answer 1

重复符号错误正是它所说的，这是一个重复的符号 main 在两者中:

fmdb

和

main

另一个错误是因为编译器找不到:

/Users/user/EmailClient/MailCore/iOSPorts/ports/security/openssl/build/Debug-iphoneos