How to include multiple directories to search header files in C preprocessor

Question

I am using cpp -Idir_name command to preprocess the source file. In dir_name I have header files included that need to be used for preprocessing.

I want to add multiple directories that can be searched for header files. How can i do this?

Answer 1

您可以有多个-I指令，例如

cpp -Ifoo/bar -Ifoo/blech -I../baz ...