ios - Apple Mach-O Linker Error (Xcode 6) -

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i have error :

ld /users/user/library/developer/xcode/deriveddata/pams_v-1.1-cmybounmouobwianhdnootdokdam/build/products/debug-iphonesimulator/pams.app/pams normal x86_64 cd "/users/user/desktop/ios maul testing/pams v-1.1" export iphoneos_deployment_target=8.0 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/pams_v-1.1-cmybounmouobwianhdnootdokdam/build/products/debug-iphonesimulator -f/users/user/library/developer/xcode/deriveddata/pams_v-1.1-cmybounmouobwianhdnootdokdam/build/products/debug-iphonesimulator -filelist /users/user/library/developer/xcode/deriveddata/pams_v-1.1-cmybounmouobwianhdnootdokdam/build/intermediates/pams\ v-1.1.build/debug-iphonesimulator/pams\ v-1.1.build/objects-normal/x86_64/pams.linkfilelist -xlinker -rpath -xlinker @executable_path/frameworks -xlinker -objc_abi_version -xlinker 2 -l/applications/xcode.app/contents/developer/toolchains/xcodedefault.xctoolchain/usr/lib/swift/iphonesimulator -xlinker -add_ast_path -xlinker /users/user/library/developer/xcode/deriveddata/pams_v-1.1-cmybounmouobwianhdnootdokdam/build/intermediates/pams\ v-1.1.build/debug-iphonesimulator/pams\ v-1.1.build/objects-normal/x86_64/pams.swiftmodule -mios-simulator-version-min=8.0 -framework foundation -framework avfoundation -framework corefoundation -framework security -xlinker -dependency_info -xlinker /users/user/library/developer/xcode/deriveddata/pams_v-1.1-cmybounmouobwianhdnootdokdam/build/intermediates/pams\ v-1.1.build/debug-iphonesimulator/pams\ v-1.1.build/objects-normal/x86_64/pams_dependency_info.dat -o /users/user/library/developer/xcode/deriveddata/pams_v-1.1-cmybounmouobwianhdnootdokdam/build/products/debug-iphonesimulator/pams.app/pams  undefined symbols architecture x86_64: "_main", referenced from:  implicit entry/start main executable ld: symbol(s) not found architecture x86_64 clang: error: linker command failed exit code 1 (use -v see invocation)

i try delete driveddata folder , clear build still error...

try 1 thing :

go project -> build phases -> compiled sources , make sure main.m present there .


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