C++ Error: Invoking “make -j2 -l2“ failed [How to Solve]

Note that this prompt is not the problem, that is, the error is not invoking “make – J2 – L2”, it just indicates that you use dual threaded computing, just like the dual core of a computer. Similarly, “- J4 – L4” and “- J8 – L8” will appear. As shown in the figure above, the problem is that I missed a semicolon when writing C + + code;

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