• library not found for -lstdc++.6.0.9

     library not found for -lstdc++.6.0.9

    Cause: libstdc++. 6.0.9 has been removed from 10 Xcode cases, so no database error is found. Solution: 1. Remove and replace the classes and third-party libraries that depend on libstdc. 2. Manually add libstdc to xcode because the code is huge and the third-party package library cannot be modified. The second method is used here because

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