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I’m a newbie in clang. I have read a paper about source to source transformation from cuda to opencl using clang compiler front end.
Can anyone tell me why the option -cc1 is sometimes used?
The Clang compiler front-end has several additional Clang specific features which are not exposed through the GCC compatibility driver interface. The
-cc1argument indicates that the compiler front-end is to be used, and not the driver. The clang-cc1functionality implements the core compiler functionality.So, simply speaking. If you do not give
-cc1then you can expect the “look&feel” of standard GCC. That is the vast majority of compiler flags work just like you would expect them to work with GCC. If you pass the option “-cc1” then you get the Clang compiler flag set. Thus, there might be differences to GCC.Hope that makes it a little clearer.