Llvm g ++ preprocessor passes

Question

Suppose I want to write my own preprocessor.

So I want something like this:

all * .cpp and * .hpp (even included), before going to g ++, they go:

file --> my preprocessor -> g++

Is there an easy way to do this within LLVM? that is, add a step that says: "after downloading the source file, pass it through this program before compiling it"?

Thank!

Answer 1

Ideas:

• Hack cpp. You can easily ( -no-integrated-cpp) do gccto invoke your version cpp, which will call real cpp.
• gcc -E, , , "#include".
• prepreprocessor, . *.cppanon → *.cpp → *.o; *.hppanon → *.hpp;
• #define.
• FUSE, gcc.

: 4,3,1,2,5.

Answer 2

, Clang , , , .