Swift en iOS Cocoa Touch Static Library

Estoy tratando de usar swift en una biblioteca estática de cocoa, pero el comstackdor me está escupiendo esto:

Libtool /Users/USERNAME/Library/Developer/Xcode/DerivedData/SwiftFramework-gmerfrjnryqwvmbjvschjjxdjyvs/Build/Products/Debug-iphoneos/libSwiftFramework.a normal arm64 cd /Users/USERNAME/Code/Examples/SwiftFramework export IPHONEOS_DEPLOYMENT_TARGET=8.1 export PATH="/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.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/libtool -static -arch_only arm64 -syslibroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS8.1.sdk -L/Users/USERNAME/Library/Developer/Xcode/DerivedData/SwiftFramework-gmerfrjnryqwvmbjvschjjxdjyvs/Build/Products/Debug-iphoneos -filelist /Users/USERNAME/Library/Developer/Xcode/DerivedData/SwiftFramework-gmerfrjnryqwvmbjvschjjxdjyvs/Build/Intermediates/SwiftFramework.build/Debug-iphoneos/SwiftFramework.build/Objects-normal/arm64/SwiftFramework.LinkFileList -L/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/iphoneos -Xlinker -add_ast_path -Xlinker /Users/USERNAME/Library/Developer/Xcode/DerivedData/SwiftFramework-gmerfrjnryqwvmbjvschjjxdjyvs/Build/Intermediates/SwiftFramework.build/Debug-iphoneos/SwiftFramework.build/Objects-normal/arm64/SwiftFramework.swiftmodule -o /Users/USERNAME/Library/Developer/Xcode/DerivedData/SwiftFramework-gmerfrjnryqwvmbjvschjjxdjyvs/Build/Products/Debug-iphoneos/libSwiftFramework.a error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: unknown option character `X' in: -Xlinker Usage: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool -static [-] file [...] [-filelist listfile[,dirname]] [-arch_only arch] [-sacLT] [-no_warning_for_no_symbols] Usage: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool -dynamic [-] file [...] [-filelist listfile[,dirname]] [-arch_only arch] [-o output] [-install_name name] [-compatibility_version #] [-current_version #] [-seg1addr 0x#] [-segs_read_only_addr 0x#] [-segs_read_write_addr 0x#] [-seg_addr_table <filename>] [-seg_addr_table_filename <file_system_path>] [-all_load] [-noall_load] 

Esto sucede al crear un nuevo proyecto que es la Biblioteca estática de Cocoa Touch y luego agregar un file rápido y vacío al objective.

 unknown option character `X' in: -Xlinker 

¿Alguien ha visto esto al intentar esto en una biblioteca estática?