undefined reference to `isAll' collect2.exe: error: ld returned 1 exit sta
时间: 2023-10-21 09:37:42 浏览: 41
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This error message is related to the linker, and it indicates that the linker is unable to find a definition for the function or variable named "isAll" that is being referenced in your code.
To resolve this error, you need to make sure that the definition for the "isAll" function or variable is included in your code and that it is properly linked to your program. This may involve adding a source file that defines the function or variable, or making sure that the necessary library or object files are included in your build process.
If you are using a third-party library that provides the "isAll" function or variable, you may also need to make sure that the library is properly linked with your program. This may involve specifying the library in your build settings or adding the necessary linker flags to your command-line arguments.