ios - Undefined symbols for architecture arm64 error after accidentally delete target -

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i accidentally delete target. created again couldn't run application again. when set appdelegate error. 

ld /users/cihanozdiker/library/developer/xcode/deriveddata/moka-foueugicfassxcdbtgwkndrougpu/build/intermediates/moka.build/debug-iphoneos/moka.build/objects-normal/arm64/moka normal arm64 cd /users/cihanozdiker/documents/mokaaftermerchantfinished export iphoneos_deployment_target=9.1 export path="/applications/xcode.app/contents/developer/platforms/iphoneos.platform/developer/usr/bin:/applications/xcode.app/contents/developer/usr/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin" /applications/xcode.app/contents/developer/toolchains/xcodedefault.xctoolchain/usr/bin/clang -arch arm64 -isysroot /applications/xcode.app/contents/developer/platforms/iphoneos.platform/developer/sdks/iphoneos9.2.sdk -l/users/cihanozdiker/library/developer/xcode/deriveddata/moka-foueugicfassxcdbtgwkndrougpu/build/products/debug-iphoneos -l../include -l../include/barcode -l../include/common -l../include/cyclone_crypto -l../include/estimotesdk -l../include/openssl -l../include/estimotesdk/headers -l/users/cihanozdiker/documents/mokaaftermerchantfinished -l../lib -l../lib/aescrypt-objc-master -l../lib/rncryptor -f/users/cihanozdiker/library/developer/xcode/deriveddata/moka-foueugicfassxcdbtgwkndrougpu/build/products/debug-iphoneos -filelist /users/cihanozdiker/library/developer/xcode/deriveddata/moka-foueugicfassxcdbtgwkndrougpu/build/intermediates/moka.build/debug-iphoneos/moka.build/objects-normal/arm64/moka.linkfilelist -xlinker -rpath -xlinker @executable_path/frameworks -miphoneos-version-min=9.1 -objc -objc -fobjc-arc -fobjc-link-runtime -lcrypto -lssl -lc4netsdk -xlinker -dependency_info -xlinker /users/cihanozdiker/library/developer/xcode/deriveddata/moka-foueugicfassxcdbtgwkndrougpu/build/intermediates/moka.build/debug-iphoneos/moka.build/objects-normal/arm64/moka_dependency_info.dat -o /users/cihanozdiker/library/developer/xcode/deriveddata/moka-foueugicfassxcdbtgwkndrougpu/build/intermediates/moka.build/debug-iphoneos/moka.build/objects-normal/arm64/moka  undefined symbols architecture arm64:   "_objc_class_$_mokaappdelegate", referenced from:       objc-class-ref in main.o ld: symbol(s) not found architecture arm64 clang: error: linker command failed exit code 1 (use -v see invocation)

i couldn't fix it. i'm using xcode 7.2.

make sure mokaappdelegate implementation file (probably mokaappdelegate.m) marked part of new target.

select file in project navigator, @ file inspector panel , make sure right target(s) selected in target membership pane.


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