有没有办法用clang有效地编译已经预处理的文件？

Question

I got a preprocessed file with command: clang++ -E test.cc > test.E Then I want to quickly compile it. To do it, I run clang++ -### -c test.cc , then I take all those flags and just replace input file name from test.cc to test.E .

But I wonder, if there are some redundant flags in output of clang++ -### for already preprocessed file, or may be there are some flags, that force clang to skip preprocessing or some other unnecessary steps.

The aim is to speed up the compilation of a preprocessed file.

Answer 1

为了加快编译速度，我需要将标志的“ -x”参数替换为正确的语言，例如：“ c”->“ cpp-output”，“ c ++”->“ c ++-cpp-output”等。在这种情况下，clang根本不会运行预处理。