What is the difference between gcc/g++ and cc1/cc1plus?

When I compile my projects and check the resources used by running top, the big CPU/memory hog is sometimes called g++ and sometimes cc1plus. What is the difference between the two, and should I ever call cc1plus directly?

1 Answer

What is the difference between the two,

The g++ is a compiler driver. It knows how to invoke the actual compiler (cc1plus), assembler and linker. It does not know how to parse or compile the sources.

and should I ever call cc1plus directly?

No.

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