ios - Apple Mach O Linker Error -

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hope guys know how fix one. need add framework link binary can't find 1 add.

ld /users/chrismac/library/developer/xcode/deriveddata/sum-cyzxwtuyfesisgfvermcafpbmtgv/build/products/debug-iphonesimulator/sum.app/sum normal i386 cd /users/chrismac/documents/sum export iphoneos_deployment_target=7.1 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 i386 -isysroot /applications/xcode.app/contents/developer/platforms/iphonesimulator.platform/developer/sdks/iphonesimulator7.1.sdk -l/users/chrismac/library/developer/xcode/deriveddata/sum-cyzxwtuyfesisgfvermcafpbmtgv/build/products/debug-iphonesimulator -f/users/chrismac/library/developer/xcode/deriveddata/sum-cyzxwtuyfesisgfvermcafpbmtgv/build/products/debug-iphonesimulator -filelist /users/chrismac/library/developer/xcode/deriveddata/sum-cyzxwtuyfesisgfvermcafpbmtgv/build/intermediates/sum.build/debug-iphonesimulator/sum.build/objects-normal/i386/sum.linkfilelist -xlinker -objc_abi_version -xlinker 2 -fobjc-arc -fobjc-link-runtime -xlinker -no_implicit_dylibs -mios-simulator-version-min=7.1 -framework coregraphics -framework uikit -framework foundation -xlinker -dependency_info -xlinker /users/chrismac/library/developer/xcode/deriveddata/sum-cyzxwtuyfesisgfvermcafpbmtgv/build/intermediates/sum.build/debug-iphonesimulator/sum.build/objects-normal/i386/sum_dependency_info.dat -o /users/chrismac/library/developer/xcode/deriveddata/sum-cyzxwtuyfesisgfvermcafpbmtgv/build/products/debug-iphonesimulator/sum.app/sum

duplicate symbol _pressit in: /users/chrismac/library/developer/xcode/deriveddata/sum-cyzxwtuyfesisgfvermcafpbmtgv/build/intermediates/sum.build/debug-iphonesimulator/sum.build/objects-normal/i386/secondviewcontroller.o /users/chrismac/library/developer/xcode/deriveddata/sum-cyzxwtuyfesisgfvermcafpbmtgv/build/intermediates/sum.build/debug-iphonesimulator/sum.build/objects-normal/i386/firstviewcontroller.o duplicate symbol _push in: /users/chrismac/library/developer/xcode/deriveddata/sum-cyzxwtuyfesisgfvermcafpbmtgv/build/intermediates/sum.build/debug-iphonesimulator/sum.build/objects-normal/i386/secondviewcontroller.o /users/chrismac/library/developer/xcode/deriveddata/sum-cyzxwtuyfesisgfvermcafpbmtgv/build/intermediates/sum.build/debug-iphonesimulator/sum.build/objects-normal/i386/firstviewcontroller.o duplicate symbol _saveddata in: /users/chrismac/library/developer/xcode/deriveddata/sum-cyzxwtuyfesisgfvermcafpbmtgv/build/intermediates/sum.build/debug-iphonesimulator/sum.build/objects-normal/i386/secondviewcontroller.o /users/chrismac/library/developer/xcode/deriveddata/sum-cyzxwtuyfesisgfvermcafpbmtgv/build/intermediates/sum.build/debug-iphonesimulator/sum.build/objects-normal/i386/firstviewcontroller.o ld: 3 duplicate symbols architecture i386 clang: error: linker command failed exit code 1 (use -v see invocation)

you arent missing lib yo have 2 c functions called pressit, push , saveddata conflict!

the duplicated symbols in firstviewcontroller & secondviewcontroller

=> solution: dont implement same functions twice.

  • if equal, move them third file , include them only
  • if differ, rename them

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